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       hw_segments
13           number of segments after physical and DMA remapping hardware
14           coalescing is performed
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16       name
17           name of the probe point
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19       flags
20           see below BIO_UPTODATE 0 ok after I/O completion BIO_RW_BLOCK 1
21           RW_AHEAD set, and read/write would block BIO_EOF 2 out-out-bounds
22           error BIO_SEG_VALID 3 nr_hw_seg valid BIO_CLONED 4 doesn't own data
23           BIO_BOUNCED 5 bio is a bounce bio BIO_USER_MAPPED 6 contains user
24           pages BIO_EOPNOTSUPP 7 not supported
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26       devname
27           block device name
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29       bytes_done
30           number of bytes transferred
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32       idx
33           offset into the bio vector array
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35       opf
36           operations and flags
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38       phys_segments
39           number of segments in this bio after physical address coalescing is
40           performed.
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42       vcnt
43           bio vector count which represents number of array element (page,
44           offset, length) which makes up this I/O request
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46       size
47           total size in bytes
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49       sector
50           beginning sector for the entire bio
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52       rw
53           binary trace for read/write request
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55       ino
56           i-node number of the mapped file
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58       error
59           0 on success
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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 2021       PROBE::IOBLOCK.END(3stap)
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