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Make udev rules more robust #78

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Make udev rules more robust #78

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0cae942
dmsetup: return non-zero on stdio I/O error
DemiMarie Apr 1, 2022
bedc445
Disable lvm2 udev rules if `dmsetup splitname` fails
DemiMarie Apr 1, 2022
45f8689
Disable udev rules if udev flags can't be obtained
DemiMarie Apr 1, 2022
b9ad503
Drop support for very old kernels
DemiMarie Apr 1, 2022
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Disable lvm2 udev rules if dmsetup splitname fails 
If the output of `dmsetup splitname` cannot be trusted, the safest
option is to disable all lvm2 rules.
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@DemiMarie
DemiMarie committed Apr 3, 2022
commit bedc4458fa08a963baec764b35ffb6c86d6856ab
2 changes: 1 addition & 1 deletion udev/11-dm-lvm.rules.in
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Expand Up @@ -18,7 +18,7 @@ ENV{DM_UDEV_RULES_VSN}!="?*", GOTO="lvm_end"
ENV{DM_UUID}!="LVM-?*", GOTO="lvm_end"

# Use DM name and split it up into its VG/LV/layer constituents.
IMPORT{program}="(DM_EXEC)/dmsetup splitname --nameprefixes --noheadings --rows $env{DM_NAME}"
IMPORT{program}!="(DM_EXEC)/dmsetup splitname --nameprefixes --noheadings --rows $env{DM_NAME}", GOTO="lvm_disable"

# DM_SUBSYSTEM_UDEV_FLAG0 is the 'NOSCAN' flag for LVM subsystem.
# This flag is used to temporarily disable selected rules to prevent any
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