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- 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.
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