Section: IO Scheduler and block IO Taps (3stap)
Updated: August 2015
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probe::ioblock.end - Fires whenever a block I/O transfer is complete.
number of segments in this bio after physical address coalescing is performed.
offset into the bio vector array
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
binary trace for read/write request
block device name
beginning sector for the entire bio
0 on success
total size in bytes
name of the probe point
bio vector count which represents number of array element (page, offset, length) which makes up this I/O request
number of bytes transferred
number of segments after physical and DMA remapping hardware coalescing is performed
i-node number of the mapped file
The process signals the transfer is done.
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using the manual pages.
Time: 20:06:00 GMT, August 25, 2015