summaryrefslogtreecommitdiffstats
path: root/Documentation/ABI/testing/sysfs-block
blob: 44f52a4f5903359eda2f2ffafff2d3341e437e62 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
What:		/sys/block/<disk>/stat
Date:		February 2008
Contact:	Jerome Marchand <jmarchan@redhat.com>
Description:
		The /sys/block/<disk>/stat files displays the I/O
		statistics of disk <disk>. They contain 11 fields:
		 1 - reads completed succesfully
		 2 - reads merged
		 3 - sectors read
		 4 - time spent reading (ms)
		 5 - writes completed
		 6 - writes merged
		 7 - sectors written
		 8 - time spent writing (ms)
		 9 - I/Os currently in progress
		10 - time spent doing I/Os (ms)
		11 - weighted time spent doing I/Os (ms)
		For more details refer Documentation/iostats.txt


What:		/sys/block/<disk>/<part>/stat
Date:		February 2008
Contact:	Jerome Marchand <jmarchan@redhat.com>
Description:
		The /sys/block/<disk>/<part>/stat files display the
		I/O statistics of partition <part>. The format is the
		same as the above-written /sys/block/<disk>/stat
		format.


What:		/sys/block/<disk>/integrity/format
Date:		June 2008
Contact:	Martin K. Petersen <martin.petersen@oracle.com>
Description:
		Metadata format for integrity capable block device.
		E.g. T10-DIF-TYPE1-CRC.


What:		/sys/block/<disk>/integrity/read_verify
Date:		June 2008
Contact:	Martin K. Petersen <martin.petersen@oracle.com>
Description:
		Indicates whether the block layer should verify the
		integrity of read requests serviced by devices that
		support sending integrity metadata.


What:		/sys/block/<disk>/integrity/tag_size
Date:		June 2008
Contact:	Martin K. Petersen <martin.petersen@oracle.com>
Description:
		Number of bytes of integrity tag space available per
		512 bytes of data.


What:		/sys/block/<disk>/integrity/write_generate
Date:		June 2008
Contact:	Martin K. Petersen <martin.petersen@oracle.com>
Description:
		Indicates whether the block layer should automatically
		generate checksums for write requests bound for
		devices that support receiving integrity metadata.
OpenPOWER on IntegriCloud