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PROBE...TRACE(3stap) IO Scheduler and block IO Taps PROBE...TRACE(3stap)
probe::ioblock_trace.end - Fires whenever a block I/O transfer is complete.
ioblock_trace.end
rw binary trace for read/write request p_start_sect points to the start sector of the partition structure of the device bytes_done number of bytes transferred idx offset into the bio vector array phys_segments - number of segments in this bio after physical address coalescing is performed. q request queue on which this bio was queued. name name of the probe point devname block device name ino i-node number of the mapped file bdev target block device vcnt bio vector count which represents number of array element (page, offset, length) which makes up this I/O request opf operations and flags sector beginning sector for the entire bio flags see below BIO_UPTODATE 0 ok after I/O completion BIO_RW_BLOCK 1 RW_AHEAD set, and read/write would block BIO_EOF 2 out-out-bounds error BIO_SEG_VALID 3 nr_hw_seg valid BIO_CLONED 4 doesn't own data BIO_BOUNCED 5 bio is a bounce bio BIO_USER_MAPPED 6 contains user pages BIO_EOPNOTSUPP 7 not supported size total size in bytes bdev_contains points to the device object which contains the partition (when bio structure represents a partition)
The process signals the transfer is done.
tapset::ioblock(3stap)
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SystemTap Tapset Reference November 2023 PROBE...TRACE(3stap)
Pages that refer to this page: tapset::ioblock(3stap)