Commit | Line | Data |
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0e53c2be JM |
1 | What: /sys/block/<disk>/stat |
2 | Date: February 2008 | |
3 | Contact: Jerome Marchand <jmarchan@redhat.com> | |
4 | Description: | |
5 | The /sys/block/<disk>/stat files displays the I/O | |
6 | statistics of disk <disk>. They contain 11 fields: | |
7 | 1 - reads completed succesfully | |
8 | 2 - reads merged | |
9 | 3 - sectors read | |
10 | 4 - time spent reading (ms) | |
11 | 5 - writes completed | |
12 | 6 - writes merged | |
13 | 7 - sectors written | |
14 | 8 - time spent writing (ms) | |
15 | 9 - I/Os currently in progress | |
16 | 10 - time spent doing I/Os (ms) | |
17 | 11 - weighted time spent doing I/Os (ms) | |
18 | For more details refer Documentation/iostats.txt | |
19 | ||
20 | ||
21 | What: /sys/block/<disk>/<part>/stat | |
22 | Date: February 2008 | |
23 | Contact: Jerome Marchand <jmarchan@redhat.com> | |
24 | Description: | |
25 | The /sys/block/<disk>/<part>/stat files display the | |
26 | I/O statistics of partition <part>. The format is the | |
27 | same as the above-written /sys/block/<disk>/stat | |
28 | format. | |
c1c72b59 MP |
29 | |
30 | ||
31 | What: /sys/block/<disk>/integrity/format | |
32 | Date: June 2008 | |
33 | Contact: Martin K. Petersen <martin.petersen@oracle.com> | |
34 | Description: | |
35 | Metadata format for integrity capable block device. | |
36 | E.g. T10-DIF-TYPE1-CRC. | |
37 | ||
38 | ||
39 | What: /sys/block/<disk>/integrity/read_verify | |
40 | Date: June 2008 | |
41 | Contact: Martin K. Petersen <martin.petersen@oracle.com> | |
42 | Description: | |
43 | Indicates whether the block layer should verify the | |
44 | integrity of read requests serviced by devices that | |
45 | support sending integrity metadata. | |
46 | ||
47 | ||
48 | What: /sys/block/<disk>/integrity/tag_size | |
49 | Date: June 2008 | |
50 | Contact: Martin K. Petersen <martin.petersen@oracle.com> | |
51 | Description: | |
52 | Number of bytes of integrity tag space available per | |
53 | 512 bytes of data. | |
54 | ||
55 | ||
56 | What: /sys/block/<disk>/integrity/write_generate | |
57 | Date: June 2008 | |
58 | Contact: Martin K. Petersen <martin.petersen@oracle.com> | |
59 | Description: | |
60 | Indicates whether the block layer should automatically | |
61 | generate checksums for write requests bound for | |
62 | devices that support receiving integrity metadata. |