1PROBE::IOBLOCK.END(3stap)IO Scheduler and block IO TapsPROBE::IOBLOCK.END(3stap)
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NAME

6       probe::ioblock.end - Fires whenever a block I/O transfer is complete.
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SYNOPSIS

9       ioblock.end
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VALUES

12       ino
13           i-node number of the mapped file
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15       phys_segments
16           number of segments in this bio after physical address coalescing is
17           performed.
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19       vcnt
20           bio vector count which represents number of array element (page,
21           offset, length) which makes up this I/O request
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23       opf
24           operations and flags
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26       size
27           total size in bytes
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29       rw
30           binary trace for read/write request
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32       flags
33           see below BIO_UPTODATE 0 ok after I/O completion BIO_RW_BLOCK 1
34           RW_AHEAD set, and read/write would block BIO_EOF 2 out-out-bounds
35           error BIO_SEG_VALID 3 nr_hw_seg valid BIO_CLONED 4 doesn't own data
36           BIO_BOUNCED 5 bio is a bounce bio BIO_USER_MAPPED 6 contains user
37           pages BIO_EOPNOTSUPP 7 not supported
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39       idx
40           offset into the bio vector array
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42       devname
43           block device name
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45       name
46           name of the probe point
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48       bytes_done
49           number of bytes transferred
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51       hw_segments
52           number of segments after physical and DMA remapping hardware
53           coalescing is performed
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55       error
56           0 on success
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58       sector
59           beginning sector for the entire bio
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CONTEXT

62       The process signals the transfer is done.
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SEE ALSO

65       tapset::ioblock(3stap)
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69SystemTap Tapset Reference       November 2022       PROBE::IOBLOCK.END(3stap)