CN114816269A - Method, device, system, server and medium for erasing server data - Google Patents
Method, device, system, server and medium for erasing server data Download PDFInfo
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- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/0652—Erasing, e.g. deleting, data cleaning, moving of data to a wastebasket
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
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Abstract
The application discloses a method, a device, a system, a server and a medium for erasing server data, and relates to the technical field of servers. The method is applied to a server comprising a memory card integrated on a mainboard of the server; a Linux kernel operating system containing erasing software is embedded in the storage card; the method comprises the following steps: acquiring the erasing time length and the single-round time length set by a user; the single-round time length is determined according to the number of hard disks of the server, the capacity of each hard disk and the erasing speed of the erasing software on the hard disks; determining a corresponding erasing mode according to the relation between the erasing time length set by the user and the time length of the single round; and performing erasing operation on the server data in an erasing mode. Therefore, in the erasing method, different data erasing modes are formulated according to the erasing duration set by the user, the safe destruction of the server data can be completed to the maximum extent within the set time range, the urgent waiting of the user in the undeterminable time is avoided, and the user experience is improved.
Description
Technical Field
The present application relates to the field of server technologies, and in particular, to a method, an apparatus, a system, a server, and a medium for erasing server data.
Background
The current data center has more and more devices, the shelf-on use, shelf-off destruction and cross-department utilization of the devices become a normalized operation, and a server of the data center records key, sensitive and confidential data of a company or a department. The off-shelf destruction or cross-department use of the server can involve the data destruction problem in the server; the current server has the problems of more hard disks and large capacity, and the safe erasing of data needs several hours, several days or even longer time.
Therefore, it can be seen that how to erase the server data within the time limited by the user and maximally implement the destruction of the user data in the server is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
The application aims to provide a method, a device, a system, a server and a medium for erasing server data, which are used for erasing the server data within a time limited by a user and maximally realizing the destruction work of the user data in the server.
In order to solve the technical problem, the present application provides a method for erasing server data, which is applied to a server including a memory card integrated on a motherboard of the server; a Linux kernel operating system is embedded in the memory card, and erasing software is arranged in the Linux kernel operating system; the method comprises the following steps:
acquiring the erasing time length and the single-round time length set by a user; the single-round time length is determined according to the number of hard disks of the server, the capacity of each hard disk and the erasing speed of the erasing software on the hard disks;
determining a corresponding erasing mode according to the relation between the erasing duration set by the user and the single-round duration;
and executing erasing operation on the server data in the erasing mode.
Preferably, when the array card hard disk data and/or the direct disk data of the server are erased, the determining the corresponding erasing mode according to the relationship between the erasing duration set by the user and the single-round duration includes:
under the condition that the user does not set the erasing time length and the erasing time length is greater than or equal to a first preset multiple of the single-round time length, the erasing mode comprises the following steps: carrying out three-wheel full data erasing on the array card hard disk from the beginning of erasing the array card hard disk data and/or the direct connection disk data; wherein the first preset multiple is greater than or equal to 3;
when the erasing duration set by the user is greater than or equal to a second preset multiple of the single-round duration and is less than the first preset multiple of the single-round duration, the erasing mode includes: when the data of the array card hard disk and/or the data of the direct connection disk are erased from the beginning, performing full data erasure on the array card hard disk and/or the direct connection disk during the first round of data erasure; when data in a second round are erased, erasing data in a first preset sector in the array card hard disk and/or the direct connection disk; when the data in the third round is erased, erasing the data in a second preset sector in the array card hard disk and/or the direct connection disk, wherein the second preset sector is from the first preset sector;
when the erasing duration set by the user is greater than or equal to the single-round duration and is less than the second preset multiple of the single-round duration, the erasing mode includes: when new first round data is erased, performing full data erasing on the array card hard disk and/or the direct connection disk; when new second-round data is erased, erasing data of a third preset sector in the array card hard disk and/or the direct connection disk; wherein the third predetermined sector is from the first predetermined sector;
under the condition that the erasing duration set by the user is less than the single-round duration, the erasing mode comprises the following steps: after the array card hard disk data and/or the direct connection disk data are erased, erasing data of the fourth preset sector in the array card hard disk and/or the direct connection disk; wherein the fourth pre-set sector is from the first pre-set sector;
the first preset multiple is larger than the second preset multiple, and the second preset multiple is larger than the single-wheel time length.
Preferably, when the third round of data erasure is performed, the data erasure performed on a second preset sector in the array card hard disk and/or the direct disk includes:
respectively acquiring a first time length of the first round of data erasing, a second time length of the second round of data erasing and a time length required for erasing single sector data;
acquiring the sum of the first duration and the second duration;
acquiring a first difference value of the erasing time length set by the user and the sum of the first time length and the second time length;
determining the maximum number of the second preset sectors which can be erased in the first difference according to the relation between the first difference and the time length required for erasing the single sector data;
determining the second preset sector according to the maximum number of the second preset sectors and a first preset rule;
performing data erasing on the second preset sector;
when new second round data is erased, erasing data of a third preset sector in the array card hard disk and/or the direct connection disk comprises the following steps:
acquiring a third time length of the new first round data erasure and the time length required by erasing the single sector data;
acquiring a second difference value between the erasing time length set by the user and the third time length;
determining the maximum number of the third preset sectors which can be erased in the second difference value according to the relationship between the second difference value and the time length required for erasing the single sector data;
determining the third preset sector according to the maximum number of the third preset sectors and a second preset rule;
performing data erasing on the third preset sector;
the erasing mode comprises the following steps that under the condition that the erasing duration set by the user is less than the single-round duration: performing data erasure on the array card hard disk and/or the fourth preset sector in the direct disk comprises:
determining the maximum number of the fourth preset sectors according to the erasing duration set by the user and the duration required by erasing the data of the single sector;
determining the fourth preset sector according to the maximum number of the fourth preset sectors and a third preset rule;
and erasing data of the fourth preset sector.
Preferably, the first preset rule, the second preset rule, and the third preset rule at least include a rule set by one of the following methods:
randomly selecting the sector from the first preset sector as a second preset sector, a third preset sector and a fourth preset sector;
or the positions of the first preset sectors are arranged from small to large, and the second preset sector, the third preset sector or the fourth preset sector is selected according to a preset time interval.
Preferably, when erasing data of the firmware of the server and/or erasing data of the PEMA persistent memory, the determining a corresponding erasing manner according to the relationship between the erasing duration set by the user and the single round of duration includes:
under the condition that the user does not set the erasing time length and the erasing time length is greater than or equal to a first preset multiple of the single-round time length, the erasing mode comprises the following steps: performing three rounds of full data erasing on the data of the firmware and/or the data of the PEMA persistent memory from the beginning of erasing the data of the firmware and/or the data of the PEMA persistent memory; wherein the first preset multiple is greater than or equal to 3;
when the erasing duration set by the user is greater than or equal to a second preset multiple of the single-round duration and is less than the first preset multiple of the single-round duration, the erasing mode includes: performing two-round full data erasing on the data of the firmware and/or the data of the PEMA persistent memory from the beginning of erasing the data of the firmware and/or the data of the PEMA persistent memory;
when the erasing duration set by the user is greater than or equal to the single-round duration and is less than the second preset multiple of the single-round duration, the erasing mode includes: performing a round of all-data erasing on the data of the firmware and/or the data of the PEMA persistent memory from the beginning of erasing the data of the firmware and/or the data of the PEMA persistent memory;
under the condition that the erasing duration set by the user is less than the single-round duration, the data of the firmware and/or the data of the PEMA persistent memory are not erased;
the first preset multiple is larger than the second preset multiple, and the second preset multiple is larger than the single-wheel time length.
Preferably, the erasing the server data by the erasing manner includes:
and under the condition that the BIOS system activates the erasing software, executing the erasing operation on the server data in the erasing mode.
Preferably, when erasing data of the array card hard disk of the server, the erasing operation includes:
erasing data of the array card hard disk by using an array card tool;
when the direct connection disk data of the server is erased, the erasing operation comprises the following steps:
erasing the direct connection disk data by adopting a random number duplicating mode;
when erasing data of the firmware of the server, the erasing operation comprises:
the data of the firmware of the server is deleted by calling a firmware interface of the server;
upon data erasure of the PEMA persistent memory, the erase operation includes:
and deleting the data of the PMEM persistent memory in the mode of duplicating the random number.
In order to solve the above technical problem, the present application further provides an erasing system for server data, including: a memory card integrated on a motherboard of the server; a Linux kernel operating system is embedded in the memory card, and erasing software is arranged in the Linux kernel operating system;
the memory card is used for acquiring the erasing duration and the single-round duration set by a user; the single-round time length is determined according to the number of hard disks of the server, the capacity of each hard disk and the erasing speed of the erasing software on the hard disks; determining a corresponding erasing mode according to the relation between the erasing duration set by the user and the single-round duration; and executing erasing operation on the server data in the erasing mode.
In order to solve the technical problem, the present application further provides an erasing apparatus for server data, which is applied to a server including a memory card integrated on a motherboard of the server; a Linux kernel operating system is embedded in the memory card, and erasing software is arranged in the Linux kernel operating system; the device comprises:
the acquisition module is used for acquiring the erasing time length and the single-round time length set by a user; the single-round time length is determined according to the number of hard disks of the server, the capacity of each hard disk and the erasing speed of the erasing software on the hard disks;
the determining module is used for determining a corresponding erasing mode according to the relation between the erasing duration set by the user and the single-round duration;
and the execution module is used for executing the erasing operation on the server data in the erasing mode.
In order to solve the above technical problem, the present application further provides a server, including:
a memory for storing a computer program;
and the processor is used for realizing the steps of the erasing method of the server data when executing the computer program.
In order to solve the above technical problem, the present application further provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the above-mentioned server data erasing method.
The erasing method of the server data is applied to a server which comprises a memory card integrated on a mainboard of the server; a Linux kernel operating system is embedded in the memory card, and erasing software is arranged in the Linux kernel operating system; the method comprises the following steps: acquiring erasing time length and single-round time length set by a user; the single-round time length is determined according to the number of hard disks of the server, the capacity of each hard disk and the erasing speed of the erasing software on the hard disks; determining a corresponding erasing mode according to the relation between the erasing time length set by the user and the time length of the single round; and performing erasing operation on the server data in an erasing mode. Therefore, in the erasing method, different data erasing modes are formulated according to the erasing duration set by the user, the safe destruction of the server data can be completed to the maximum extent within the set time range, the urgent waiting of the user in the undeterminable time is avoided, and the user experience is improved.
In addition, the application also provides a device, a system, a server and a computer readable storage medium for erasing the server data, which have the same or corresponding technical characteristics and effects as the aforementioned erasing method for the server data.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a flowchart of a method for erasing server data according to an embodiment of the present disclosure;
fig. 2 is a block diagram of an erasing apparatus for server data according to an embodiment of the present application;
fig. 3 is a block diagram of a server according to another embodiment of the present application;
fig. 4 is a schematic diagram of a server complete machine data dynamic erasing method based on a time policy according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.
The core of the application is to provide a method, a device, a system, a server and a medium for erasing server data, which are used for erasing the server data within the time limited by a user and maximally realizing the destruction work of the user data in the server.
For ease of understanding, the hardware structure used in the technical solution of the present application is described below. The server mainboard is provided with the clamping groove of the storage card, the storage card can be moved at will, the integration on the mainboard of the server is convenient, the updating and upgrading of software on the storage card can be completed very conveniently, the operation and maintenance efficiency is improved, and meanwhile, the mobile storage card module can be matched according to the requirement, so that the server cost of a user is reduced. The server is provided with an array card hard disk, a direct connection disk, a Persistent Memory Module (PMEM) and a network card and the like, and the hard disk, the direct connection disk, the PMEM Persistent Memory, the network card and the like of the server are erased through erasing software.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings. Fig. 1 is a flowchart of a method for erasing server data according to an embodiment of the present disclosure, which is applied to a server including a memory card integrated on a motherboard of the server; a Linux kernel operating system is embedded in the memory card, and erasing software is arranged in the Linux kernel operating system; as shown in fig. 1, the method includes:
s10: acquiring the erasing time length and the single-round time length set by a user; the single-round time length is determined according to the number of hard disks of the server, the capacity of each hard disk and the erasing speed of the erasing software on the hard disks;
the memory card is used as a carrier, and erasing software in a Linux kernel operating system is embedded to erase the server data. The memory Card used is not limited, and the memory Card selected in the embodiment of the present application is a flash memory Card (TF). The erasing duration set by the user is not limited and is determined according to the actual situation. When the server data is erased, the number of the hard disks of the server and the capacity of each hard disk are automatically counted, and the time length required for completing single-round data erasing, namely the single-round time length, is evaluated according to the erasing speed of the hard disks.
S11: and determining a corresponding erasing mode according to the relation between the erasing time length set by the user and the time length of the single round.
S12: and performing erasing operation on the server data in an erasing mode.
The erasing duration and the single-round duration set by the user are obtained in the steps, and the corresponding erasing mode is determined according to the relation between the erasing duration set by the user and the single-round duration. If the erasing duration set by the user meets the duration of a single round, the server can be erased in full data, and the server data can be selectively erased in the remaining duration; the erasing duration set by the user does not meet the single-round duration, and the server data can be directly and selectively deleted. The method realizes one-key erasing of the server hard disk data and the use record on the Linux system through erasing software, has integral operation of the whole machine, and does not need complicated server hardware category distinguishing and class-by-class/manual deletion of each hardware. The data erasing time of the server can be effectively saved, and the efficiency is improved by over 300%. The integrated operation comprises the following steps:
erasing data of the array card hard disk by using an array card tool;
erasing data of the server direct connection disk by writing random numbers;
deleting the use record of the server firmware by calling a firmware interface, such as a Baseboard Management Controller (BMC) chip, a network card, a disk array of Independent Drives (RAID) card, and the like;
and deleting the data of the PMEM persistent memory by duplicating the random number.
The erasing method of the server data provided by the embodiment is applied to a server including a memory card integrated on a mainboard of the server; a Linux kernel operating system is embedded in the memory card, and erasing software is arranged in the Linux kernel operating system; the method comprises the following steps: acquiring the erasing time length and the single-round time length set by a user; the single-round time length is determined according to the number of hard disks of the server, the capacity of each hard disk and the erasing speed of the erasing software on the hard disks; determining a corresponding erasing mode according to the relation between the erasing time length set by the user and the time length of the single round; and performing erasing operation on the server data in an erasing mode. Therefore, in the erasing method, different data erasing modes are set according to the erasing duration set by the user, the safe destruction of the server data can be completed to the maximum extent within the set time range, the urgent waiting of the user in the undeterminable time is avoided, and the user experience is improved.
In implementation, when the array card hard disk data and/or the direct connection disk data of the server need to be erased, in order to ensure that the safe destruction of the server data is completed to the maximum extent within a set time range, a preferred embodiment is that, when the array card hard disk data and/or the direct connection disk data of the server are erased, determining a corresponding erasing manner according to a relationship between an erasing duration set by a user and a duration of a single round includes:
under the condition that the user does not set the erasing time length and the erasing time length is greater than or equal to a first preset multiple of the single-round time length, the erasing mode comprises the following steps: carrying out three-wheel full data erasing on the array card hard disk from the beginning of erasing the array card hard disk data and/or the direct connection disk data; wherein the first preset multiple is greater than or equal to 3;
under the condition that the erasing duration set by the user is greater than or equal to a second preset multiple of the single-round duration and is less than a first preset multiple of the single-round duration, the erasing mode comprises the following steps: when the data of the array card hard disk and/or the data of the direct connection disk are erased from the beginning, performing full data erasing on the array card hard disk and/or the direct connection disk in the first round of data erasing; when the second round of data erasing is carried out, data erasing is carried out on a first preset sector in the array card hard disk and/or the direct connection disk; when the data of the third round is erased, erasing data of a second preset sector in the array card hard disk and/or the direct connection disk, wherein the second preset sector is from the first preset sector;
under the condition that the erasing duration set by the user is greater than or equal to the single-round duration and is less than a second preset multiple of the single-round duration, the erasing mode comprises the following steps: when the data of the array card hard disk and/or the data of the direct connection disk are erased from the beginning, performing full data erasing on the array card hard disk and/or the direct connection disk when the new first round of data erasing is performed; when new second round data is erased, erasing data of a third preset sector in the array card hard disk and/or the direct connection disk; wherein the third predetermined sector is from the first predetermined sector;
under the condition that the erasing duration set by the user is less than the duration of a single round, the erasing mode comprises the following steps: erasing data of a fourth preset sector in the array card hard disk and/or the direct connection disk from the beginning of erasing the array card hard disk data and/or the direct connection disk data; wherein the fourth predetermined sector is from the first predetermined sector;
the first preset multiple is larger than the second preset multiple, and the second preset multiple is larger than the single-round time length.
In this embodiment, the first predetermined multiple is greater than or equal to 3. When the user does not set the erasing duration and the erasing duration is greater than or equal to the first preset multiple of the single-round duration, the description duration is quite abundant, and comprehensive disk erasing operation, use record deletion and cleaning work can be performed on the server. According to the BMB21-2007 standard of the national Security administration, 3 complete data erasing operations are performed on the hard disk to ensure that the data is completely erased. The specific value of the first preset multiple is not limited, and may be a number greater than 3. It should be noted that, when the first preset multiple is 4, three rounds of full data erasing are performed on the array card hard disk data and/or the direct disk data from the beginning of erasing the array card hard disk data and/or the direct disk data, so as to prevent the array card hard disk data and/or the direct disk data from being excessively erased to damage the array card hard disk data and/or the direct disk data.
And determining the value of the second preset multiple according to the actual condition without limitation, wherein the second preset multiple is smaller than the first preset multiple. If the second preset multiple is selected to be 2, the first preset multiple is selected to be 3, namely the erasing time set by the user is more than or equal to 2 times of the single-round time and less than 3 times of the single-round time, and when the first round of erasing is performed, the array card hard disk data and/or the direct disk data are/is erased in a full data mode. When the second round of erasing is carried out, selective erasing is carried out according to the health state of the sector of the array card hard disk, the sector to be mapped in the hard disk is isolated, the stable and normal sector is normally erased, the physical damage to the hard disk is reduced while the safe deletion of data is ensured, and the service life of the magnetic disk is prolonged; if according to the SMART parameter of the hard disk, the data is not rewritten for the current sector to be mapped in the hard disk; the sector to be mapped refers to an unstable disk sector, is available at present, can not cause immediate remapping only by reading errors of the sector, can only cause remapping when writing fails, can mark the sector as unstable by reading errors, and can become normal if the sector is successfully read and written subsequently; when the second round of erasing operation is executed, firstly counting the starting and ending positions of all sectors to be mapped in the hard disk to form an erasing isolation table of the sectors to be mapped, and automatically isolating an erasing area according to the isolation table when the hard disk is erased; normal erase is performed for stable normal sectors. The normal sector is the first predetermined sector. And selectively deleting the data of the array card hard disk and/or the direct connection disk within a limited time when the third round of data erasing is carried out. And selecting a second preset sector from the normal sectors for erasing.
When the erasing duration set by the user is greater than or equal to the single-turn duration and is less than a second preset multiple of the single-turn duration, taking the second preset multiple as 2 as an example. The erasing duration set by the user is greater than or equal to the duration of a single round, which indicates that one-time full data erasing can be performed, so that the full data erasing is performed first during the first round of erasing. When the erasing duration set by the user is less than 2 times of the duration of a single round, it means that the full data erasing is not enough to be performed twice, so that when the second round of erasing is performed, the selective erasing needs to be performed in a limited time. Performing data erasure on a third preset sector in the array card hard disk and/or the direct connection disk; wherein the third predetermined sector is from the normal sector.
When the erasing duration set by the user is less than the single-round duration, it is not enough to perform the full data erasing, so the data is selectively erased in a limited time. Performing data erasure on a fourth preset sector in the array card hard disk and/or the direct connection disk; wherein the fourth pre-set sector is from the normal sector.
When the array card hard disk data and/or the direct connection disk data of the server are/is erased, the corresponding erasing mode is determined according to the relation between the erasing duration set by the user and the duration of a single round, so that the safe destruction of the server data is completed to the maximum extent within the set time range.
In the selective erasing, in order to complete the erasing operation within the time set by the user, in a preferred embodiment, in the third round of data erasing, the erasing data of the second preset sector in the array card hard disk and/or the direct connection disk includes:
respectively acquiring a first time length of first round data erasing, a second time length of second round data erasing and a time length required by erasing single sector data;
acquiring the sum of the first duration and the second duration;
acquiring a first difference value between the erasing time length set by a user and the sum of the first time length and the second time length;
determining the maximum number of second preset sectors which can be erased in the first difference according to the relation between the first difference and the time length required for erasing the data of the single sector;
determining a second preset sector according to the maximum number of the second preset sectors and a first preset rule;
and erasing data of the second preset sector.
Specifically, the remaining time is counted, and the time (including the sector addressing time and the data erasing time of the magnetic disk) required by erasing each sector is calculated according to the previously measured erasing speed; so that the number of sectors that can be erased in the remaining time, i.e., the maximum number of second preset sectors, can be obtained. In practice, there is no limitation on the first preset rule, i.e., the number of sectors selected for erasure is not limited, as long as it is less than or equal to the maximum number of second preset sectors. E.g. from the normal sectors according to the maximum number of second preset sectors; it is also possible to select a maximum number of sectors smaller than the second preset sector from among the normal sectors and delete the sectors at intervals.
When new second round data is erased, the data erasing of a third preset sector in the array card hard disk and/or the direct connection disk comprises the following steps:
acquiring a third time length of new first-round data erasing and a time length required by erasing single sector data;
acquiring a second difference value between the erasing time length set by the user and the third time length;
determining the maximum number of erasable third preset sectors in the second difference according to the relation between the second difference and the time length required for erasing the data of the single sector;
determining a third preset sector according to the maximum number of the third preset sectors and a second preset rule;
and erasing data of the third preset sector.
Specifically, the remaining time is also counted, and the time (including the sector addressing time and the data erasing time of the magnetic disk) required by erasing each sector is calculated according to the previously measured erasing speed; so that the number of sectors that can be erased in the remaining time, i.e., the maximum number of the third preset sectors, can be obtained. In practice, there is no limitation on the second predetermined rule, i.e., the number of sectors selected for erasure, as long as it is less than or equal to the maximum number of third predetermined sectors. E.g. the maximum number of third preset sectors, from normal sectors; the maximum number of sectors smaller than the third preset sector can be selected from the normal sectors, and the sectors can be deleted at intervals.
Under the condition that the erasing duration set by the user is less than the duration of a single round, the erasing mode comprises the following steps: the data erasing of the fourth preset sector in the array card hard disk and/or the direct connection disk comprises the following steps:
determining the maximum number of the fourth preset sector according to the erasing time length set by the user and the time length required for erasing the data of the single sector;
determining a fourth preset sector according to the maximum number of the fourth preset sectors and a third preset rule;
and carrying out data erasing on the fourth preset sector.
Specifically, the set time is obtained, and meanwhile, the time (including the sector addressing time and the data clearing time of the magnetic disk) required by erasing each sector is calculated according to the previously measured erasing speed; thereby, the number of sectors that can be erased in a set time, that is, the number of fourth preset sectors can be obtained. In practice, there is no limitation on the third preset rule, i.e., the number of sectors selected for erasure, as long as it is less than or equal to the maximum number of the fourth preset sectors. E.g. the maximum number of fourth pre-set sectors, from normal sectors; the maximum number of sectors smaller than the fourth preset sector can be selected from the normal sectors, and the sectors can be deleted at intervals.
According to the embodiment, when selective erasing is performed, the erasing work can be completed to the maximum within the time specified by the user more accurately through calculation of the remaining time.
In an implementation, the first preset rule, the second preset rule, and the third preset rule at least include a rule set by one of the following methods:
randomly selecting a sector from the first preset sectors as a second preset sector, a third preset sector and a fourth preset sector;
or the positions of the first preset sectors are arranged from small to large, and the second preset sector, the third preset sector or the fourth preset sector is selected according to a preset time interval.
Selectively erasing normal sectors in the hard disk by using a random number principle, or arranging the normal sectors from small to large according to the positions of the normal sectors, and erasing in an interval sequence; the size of the interval may be calculated in terms of the remaining time. The present embodiment lists only the first preset rule, the second preset rule, and the third preset rule set in two ways, but is not limited to these two ways in practice.
The first preset rule, the second preset rule, and the third preset rule provided in this embodiment can implement selective erasing on the sector according to the first preset rule, the second preset rule, and the third preset rule.
Besides the array card hard disk data and/or the direct disk data, the data of the server also needs to be erased, and the data of the firmware or the PEMA persistent memory data also needs to be erased. When the data of the firmware of the server and/or the data of the PEMA persistent memory are erased, determining a corresponding erasing mode according to the relation between the erasing duration set by a user and the duration of a single round comprises the following steps:
under the condition that the user does not set the erasing time length and the erasing time length is greater than or equal to a first preset multiple of the single-round time length, the erasing mode comprises the following steps: performing three rounds of full data erasing on the data of the firmware and/or the data of the PEMA persistent memory from the beginning of erasing the data of the firmware and/or the data of the PEMA persistent memory; wherein the first preset multiple is greater than or equal to 3;
under the condition that the erasing duration set by the user is greater than or equal to a second preset multiple of the single-round duration and is less than a first preset multiple of the single-round duration, the erasing mode comprises the following steps: performing two-round full-data erasing on the data of the firmware and/or the data of the PEMA persistent memory from the beginning of erasing the data of the firmware and/or the data of the PEMA persistent memory;
under the condition that the erasing duration set by the user is greater than or equal to the single-round duration and is less than a second preset multiple of the single-round duration, the erasing mode comprises the following steps: performing a round of all-data erasing on the data of the firmware and/or the data of the PEMA persistent memory from the beginning of erasing the data of the firmware and/or the data of the PEMA persistent memory;
under the condition that the erasing duration set by a user is less than the duration of a single round, the data of the firmware and/or the data of the PEMA persistent memory are not erased;
the first preset multiple is larger than the second preset multiple, and the second preset multiple is larger than the single-round time length.
For the erasing mode of the data of the firmware or the PEMA persistent memory data, assuming that the first preset multiple is 3 and the second preset multiple is 2, when the erasing time length is not set by a user and is more than or equal to 3 times of the single-round time length, performing 3-round all-data erasing; when the erasing duration set by the user is more than or equal to 2 times of the duration of a single round and less than 3 times of the duration of the single round, performing 2-round full data erasing; and when the erasing time length set by the user is more than or equal to the single-round time length and is less than 2 times of the single-round time length, carrying out 1-round all-data erasing.
When the data of the firmware of the server and/or the data of the PEMA persistent memory are erased, the corresponding erasing mode is determined according to the relation between the erasing duration set by the user and the duration of a single round, so that the safe destruction of the data of the server is maximally completed within the set time range.
In implementation, in order to reduce occupied system drive, it is preferable that performing the erasing operation on the server data by the erasing manner includes:
when the Basic Input Output System (BIOS) activates the erasing software, the erasing operation is performed on the server data by an erasing manner.
And a TF card is used as a carrier, a Linux kernel operating system is embedded, and data is erased through erasing software in the operating system. When the BIOS system is activated, the erasing software can be booted. The data erasing unit is in a silent state at ordinary times, the TF card is invisible under the user OS system, the occupation of a system drive symbol of a user is avoided, and only after the BIOS is activated in the starting process through shortcut keys such as F7 and the like, the server loads the Linux system on the TF card and starts the erasing software on the system. The BIOS system of the server is used for unified control, a TF card slot power-off strategy is adopted in the quiet period, the TF card is not effective, the TF card is invisible under the system, and software resources of users, such as system drive letters and the like, are not occupied. When the TF card slot is activated, the TF card slot is powered on, the TF card is visible, and the server is started from a Linux system on the TF to carry out data erasing operation.
In implementation, different erasing operations may be used to erase the server data. In a preferred embodiment, when erasing data in the array card hard disk of the server, the erasing operation includes:
erasing data of the array card hard disk by using an array card tool;
when the direct connection disk data of the server is erased, the erasing operation comprises the following steps:
erasing the data of the direct connection disk by adopting a mode of duplicating random numbers;
when data of the firmware of the server is erased, the erasing operation comprises the following steps:
deleting the data of the firmware of the server by calling a firmware interface of the server;
when data in the PEMA persistent memory is erased, the erasing operation comprises the following steps:
and deleting the data of the PMEM persistent memory by duplicating the random number.
The different erasing modes are adopted for different data of the server, so that the erasing operation of the different data can be synchronously performed, and the erasing efficiency of the server data is improved.
On the basis of the above embodiments, the present embodiment provides an erasing system for server data, including: a memory card integrated on a motherboard of the server; a Linux kernel operating system is embedded in the memory card, and erasing software is arranged in the Linux kernel operating system;
the memory card is used for acquiring the erasing duration and the single-round duration set by a user; the single-round time length is determined according to the number of hard disks of the server, the capacity of each hard disk and the erasing speed of the erasing software on the hard disks; determining a corresponding erasing mode according to the relation between the erasing time length set by the user and the time length of the single round; and performing erasing operation on the server data in an erasing mode.
The server data erasing system provided in this embodiment has the same technical features as the aforementioned server data erasing method, and the server data erasing method in the above embodiment is described in detail, so that the specific embodiment of the server data erasing system is not described herein again, and the effect is the same as above.
In the foregoing embodiments, a detailed description is given of an erasing method of server data, and the present application also provides an erasing apparatus of server data and an embodiment corresponding to a server. It should be noted that the present application describes the embodiments of the apparatus portion from two perspectives, one from the perspective of the function module and the other from the perspective of the hardware.
Fig. 2 is a structural diagram of an erasing apparatus for server data according to an embodiment of the present application. The method is applied to a server comprising a memory card integrated on a mainboard of the server; a Linux kernel operating system is embedded in the memory card, and erasing software is arranged in the Linux kernel operating system; the present embodiment is based on the angle of the function module, including:
the acquisition module 10 is used for acquiring the erasing duration and the single-round duration set by a user; the single-round time length is determined according to the number of hard disks of the server, the capacity of each hard disk and the erasing speed of the erasing software on the hard disks;
the determining module 11 is configured to determine a corresponding erasing manner according to a relationship between the erasing duration set by the user and the duration of the single round;
and the execution module 12 is used for executing the erasing operation on the server data in an erasing mode.
Since the embodiments of the apparatus portion and the method portion correspond to each other, please refer to the description of the embodiments of the method portion for the embodiments of the apparatus portion, which is not repeated here.
The erasing device for the server data provided by the embodiment acquires the erasing duration and the single-round duration set by the user through the acquisition module; determining a corresponding erasing mode according to the relation between the erasing time length set by the user and the time length of the single round by a determining module; and executing erasing operation on the server data in an erasing mode by using the execution module. According to the erasing device, different data erasing modes are set according to the erasing duration set by a user, the safe destruction of the server data can be completed to the maximum extent within a set time range, the urgent waiting of the user in an undeterminable time is avoided, and the user experience is improved.
Fig. 3 is a block diagram of a server according to another embodiment of the present application. This embodiment is based on a hardware perspective, and as shown in fig. 3, the server includes:
a memory 20 for storing a computer program;
a processor 21 for implementing the steps of the method of the server as mentioned in the above embodiments when executing the computer program.
The server provided by the embodiment may include, but is not limited to, a smart phone, a tablet computer, a notebook computer, or a desktop computer.
The processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The Processor 21 may be implemented in hardware using at least one of a Digital Signal Processor (DSP), a Field-Programmable Gate Array (FPGA), and a Programmable Logic Array (PLA). The processor 21 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 21 may be integrated with a Graphics Processing Unit (GPU) which is responsible for rendering and drawing the content required to be displayed by the display screen. In some embodiments, the processor 21 may further include an Artificial Intelligence (AI) processor for processing computational operations related to machine learning.
The memory 20 may include one or more computer-readable storage media, which may be non-transitory. Memory 20 may also include high speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 20 is at least used for storing the computer program 201, wherein after being loaded and executed by the processor 21, the computer program can implement the relevant steps of the method for erasing server data disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202, data 203, and the like, and the storage manner may be a transient storage manner or a permanent storage manner. Operating system 202 may include, among others, Windows, Unix, Linux, and the like. The data 203 may include, but is not limited to, data related to the above-mentioned method of erasing of server data, and the like.
In some embodiments, the server may also include a display screen 22, an input-output interface 23, a communication interface 24, a power supply 25, and a communication bus 26.
Those skilled in the art will appreciate that the architecture shown in FIG. 3 is not meant to be limiting of servers and may include more or fewer components than those shown.
The server provided by the embodiment of the application comprises a memory and a processor, and when the processor executes a program stored in the memory, the following method can be realized: the effect of the method for erasing the server data is the same as that of the method for erasing the server data.
Finally, the application also provides a corresponding embodiment of the computer readable storage medium. The computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps as set forth in the above-mentioned method embodiments.
It is to be understood that if the method in the above embodiments is implemented in the form of software functional units and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium and executes all or part of the steps of the methods described in the embodiments of the present application, or all or part of the technical solutions. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The computer-readable storage medium provided by the application comprises the above-mentioned method for erasing the server data, and the effects are the same as above.
In order to enable those skilled in the art to better understand the technical solution of the present application, the foregoing present application is further described in detail with reference to fig. 4, where fig. 4 is a schematic diagram of a server complete machine data dynamic erasing method based on a time policy, provided by an embodiment of the present application, and as shown in fig. 4, the method includes:
in the data erasing unit 1, a TF card on a server mainboard is embedded with a Linux kernel operating system, and after a BIOS system is activated, erasing software in the Linux kernel operating system is started to erase data. After passing through the time control unit 2, different erasing modes are selected for the firmware in the server, such as the array disk, the direct connection disk, the PMEM, the BMC/BIOS/ISQP/network card/RAID, and the like, respectively when the single-wheel time length is greater than 3 times, the single-wheel time length is greater than 2 times and less than 3 times, the single-wheel time length is greater than the single-wheel time length and less than 2 times, and the single-wheel time length is less than.
Therefore, according to the erasing duration set by the user, different data erasing modes are set for the user in the method, and the data safety destruction work can be completed with high quality and more comprehensively within the set time range as much as possible.
The method, apparatus, system, server and medium for erasing server data provided by the present application are described in detail above. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, without departing from the principle of the present application, the present application can also make several improvements and modifications, and those improvements and modifications also fall into the protection scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (11)
1. The erasing method of the server data is characterized by being applied to a server comprising a memory card integrated on a mainboard of the server; a Linux kernel operating system is embedded in the memory card, and erasing software is arranged in the Linux kernel operating system; the method comprises the following steps:
acquiring the erasing time length and the single-round time length set by a user; the single-round time length is determined according to the number of hard disks of the server, the capacity of each hard disk and the erasing speed of the erasing software on the hard disks;
determining a corresponding erasing mode according to the relation between the erasing duration set by the user and the single-round duration;
and executing erasing operation on the server data in the erasing mode.
2. The method for erasing the server data according to claim 1, wherein when erasing the array card hard disk data and/or the direct disk data of the server, the determining the corresponding erasing mode according to the relationship between the erasing duration set by the user and the single-round duration includes:
under the condition that the user does not set the erasing time length and the erasing time length is greater than or equal to a first preset multiple of the single-round time length, the erasing mode comprises the following steps: carrying out three-wheel full data erasing on the array card hard disk from the beginning of erasing the array card hard disk data and/or the direct connection disk data; wherein the first preset multiple is greater than or equal to 3;
when the erasing duration set by the user is greater than or equal to a second preset multiple of the single-round duration and is less than the first preset multiple of the single-round duration, the erasing mode includes: when the data of the array card hard disk and/or the data of the direct connection disk are erased from the beginning, performing full data erasing on the array card hard disk and/or the direct connection disk when the data of the first round is erased; when data in a second round are erased, erasing data in a first preset sector in the array card hard disk and/or the direct connection disk; when the data in the third round is erased, erasing the data in a second preset sector in the array card hard disk and/or the direct connection disk, wherein the second preset sector is from the first preset sector;
when the erasing duration set by the user is greater than or equal to the single-round duration and is less than the second preset multiple of the single-round duration, the erasing mode includes: when new first round data is erased, performing full data erasing on the array card hard disk and/or the direct connection disk; when new second-round data is erased, erasing data of a third preset sector in the array card hard disk and/or the direct connection disk; wherein the third predetermined sector is from the first predetermined sector;
under the condition that the erasing duration set by the user is less than the single-round duration, the erasing mode comprises the following steps: after the array card hard disk data and/or the direct connection disk data are erased, erasing data of the fourth preset sector in the array card hard disk and/or the direct connection disk; wherein the fourth pre-set sector is from the first pre-set sector;
the first preset multiple is larger than the second preset multiple, and the second preset multiple is larger than the single-wheel time length.
3. The method for erasing the server data according to claim 2, wherein the erasing the data of the second preset sector in the array card hard disk and/or the direct disk in the third round of data erasing comprises:
respectively acquiring a first time length of the first round of data erasing, a second time length of the second round of data erasing and a time length required for erasing single sector data;
acquiring the sum of the first duration and the second duration;
acquiring a first difference value of the erasing time length set by the user and the sum of the first time length and the second time length;
determining the maximum number of the second preset sectors which can be erased in the first difference according to the relation between the first difference and the time length required for erasing the single sector data;
determining the second preset sector according to the maximum number of the second preset sectors and a first preset rule;
performing data erasing on the second preset sector;
when new second round data is erased, erasing data of a third preset sector in the array card hard disk and/or the direct connection disk comprises the following steps:
acquiring a third time length of the new first round data erasure and the time length required by erasing the single sector data;
acquiring a second difference value between the erasing time length set by the user and the third time length;
determining the maximum number of the third preset sectors which can be erased in the second difference value according to the relationship between the second difference value and the time length required for erasing the single sector data;
determining the third preset sector according to the maximum number of the third preset sectors and a second preset rule;
performing data erasing on the third preset sector;
the erasing mode comprises the following steps that under the condition that the erasing duration set by the user is smaller than the single-round duration: performing data erasure on the array card hard disk and/or the fourth preset sector in the direct disk comprises:
determining the maximum number of the fourth preset sectors according to the erasing duration set by the user and the duration required by erasing the data of the single sector;
determining the fourth preset sector according to the maximum number of the fourth preset sectors and a third preset rule;
and erasing the data of the fourth preset sector.
4. The method for erasing data of a server according to claim 3, wherein the first preset rule, the second preset rule, and the third preset rule at least include a rule set by one of the following methods:
randomly selecting the sector from the first preset sector as the second preset sector, the third preset sector and the fourth preset sector;
or the positions of the first preset sectors are arranged from small to large, and the second preset sector, the third preset sector or the fourth preset sector is selected according to a preset time interval.
5. The method according to claim 1, wherein, when erasing data of firmware of the server and/or erasing data of a PEMA persistent memory, the determining a corresponding erasing manner according to the relationship between the erasing duration and the single-round duration set by the user includes:
under the condition that the user does not set the erasing time length and the erasing time length is greater than or equal to a first preset multiple of the single-round time length, the erasing mode comprises the following steps: performing three rounds of full data erasing on the data of the firmware and/or the data of the PEMA persistent memory from the beginning of erasing the data of the firmware and/or the data of the PEMA persistent memory; wherein the first preset multiple is greater than or equal to 3;
when the erasing duration set by the user is greater than or equal to a second preset multiple of the single-round duration and is less than the first preset multiple of the single-round duration, the erasing mode includes: performing two-round full data erasing on the data of the firmware and/or the data of the PEMA persistent memory from the beginning of erasing the data of the firmware and/or the data of the PEMA persistent memory;
when the erasing duration set by the user is greater than or equal to the single-round duration and is less than the second preset multiple of the single-round duration, the erasing mode includes: performing a round of all-data erasing on the data of the firmware and/or the data of the PEMA persistent memory from the beginning of erasing the data of the firmware and/or the data of the PEMA persistent memory;
under the condition that the erasing duration set by the user is less than the single-round duration, the data of the firmware and/or the data of the PEMA persistent memory are not erased;
the first preset multiple is larger than the second preset multiple, and the second preset multiple is larger than the single-wheel time length.
6. The method for erasing the server data according to any one of claims 1 to 5, wherein the performing the erasing operation on the server data by the erasing manner includes:
and under the condition that the BIOS system activates the erasing software, executing the erasing operation on the server data in the erasing mode.
7. The method for erasing the server data according to claim 6, wherein when erasing the array card hard disk data of the server, the erasing operation includes:
erasing data of the array card hard disk by using an array card tool;
when the direct connection disk data of the server is erased, the erasing operation comprises the following steps:
erasing the direct connection disk data by adopting a random number duplicating mode;
when erasing data of the firmware of the server, the erasing operation comprises:
deleting the data of the firmware of the server by calling a firmware interface of the server;
upon data erasure of the PEMA persistent memory, the erase operation includes:
and deleting the data of the PMEM persistent memory in the mode of duplicating the random number.
8. An erasure system for server data, comprising: a memory card integrated on a motherboard of the server; a Linux kernel operating system is embedded in the memory card, and erasing software is arranged in the Linux kernel operating system;
the memory card is used for acquiring the erasing duration and the single-round duration set by a user; the single-round time length is determined according to the number of hard disks of the server, the capacity of each hard disk and the erasing speed of the erasing software on the hard disks; determining a corresponding erasing mode according to the relation between the erasing duration set by the user and the single-round duration; and executing erasing operation on the server data in the erasing mode.
9. The erasing device of the server data is characterized by being applied to a server comprising a memory card integrated on a mainboard of the server; a Linux kernel operating system is embedded in the memory card, and erasing software is arranged in the Linux kernel operating system; the device comprises:
the acquisition module is used for acquiring the erasing time length and the single-round time length set by a user; the single-round time length is determined according to the number of hard disks of the server, the capacity of each hard disk and the erasing speed of the erasing software on the hard disks;
the determining module is used for determining a corresponding erasing mode according to the relation between the erasing duration set by the user and the single-round duration;
and the execution module is used for executing the erasing operation on the server data in the erasing mode.
10. A server, comprising:
a memory for storing a computer program;
processor for implementing the steps of the method of erasing server data according to any of claims 1 to 7 when executing said computer program.
11. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the method of erasing server data according to any one of claims 1 to 7.
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| CN115309346A (en) * | 2022-10-10 | 2022-11-08 | 苏州浪潮智能科技有限公司 | Server data erasing method, device, equipment and readable storage medium |
| CN115309346B (en) * | 2022-10-10 | 2023-02-28 | 苏州浪潮智能科技有限公司 | Server data erasing method, device, equipment and readable storage medium |
| WO2024077847A1 (en) * | 2022-10-10 | 2024-04-18 | 苏州元脑智能科技有限公司 | Server data erasing method, apparatus and device, and readable storage medium |
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