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| author |   Hannes Reinecke <hare@suse.de> | 2016-10-18 15:40:30 +0900 |
|---|---|---|
| committer |   Jens Axboe <axboe@fb.com> | 2016-10-18 10:02:02 -0600 |
| commit | 87caf97cf54b5082e56af241b88a2b8a30d17ef3 (patch) | |
| tree | 154aee6a24cb79b9f3aee44b3d5cd272bc27c4c3 /Documentation/ABI/testing/sysfs-block | |
| parent | block: Add 'zoned' queue limit (diff) | |
| download | linux-dev-87caf97cf54b5082e56af241b88a2b8a30d17ef3.tar.xz linux-dev-87caf97cf54b5082e56af241b88a2b8a30d17ef3.zip | |
blk-sysfs: Add 'chunk_sectors' to sysfs attributes
The queue limits already have a 'chunk_sectors' setting, so
we should be presenting it via sysfs.
Signed-off-by: Hannes Reinecke <hare@suse.de>
[Damien: Updated Documentation/ABI/testing/sysfs-block]
Signed-off-by: Damien Le Moal <damien.lemoal@hgst.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Shaun Tancheff <shaun.tancheff@seagate.com>
Tested-by: Shaun Tancheff <shaun.tancheff@seagate.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-block')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-block | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-block b/Documentation/ABI/testing/sysfs-block index 75a5055a722b..ee2d5cd26bfe 100644 --- a/Documentation/ABI/testing/sysfs-block +++ b/Documentation/ABI/testing/sysfs-block @@ -251,3 +251,16 @@ Description: since drive-managed zoned block devices do not support zone commands, they will be treated as regular block devices and zoned will report "none". + +What: /sys/block/<disk>/queue/chunk_sectors +Date: September 2016 +Contact: Hannes Reinecke <hare@suse.com> +Description: + chunk_sectors has different meaning depending on the type + of the disk. For a RAID device (dm-raid), chunk_sectors + indicates the size in 512B sectors of the RAID volume + stripe segment. For a zoned block device, either + host-aware or host-managed, chunk_sectors indicates the + size of 512B sectors of the zones of the device, with + the eventual exception of the last zone of the device + which may be smaller. |