hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

block: add documentation for io_timeout 

Add documentation for /sys/block/<disk>/queue/io_timeout.

Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Weiping Zhang <zhangweiping@didiglobal.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Weiping Zhang 2018-12-26 11:56:33 +08:00 committed by Jens Axboe
parent 59f75fd0e3
commit bb351abaf5
2 changed files with 16 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
Documentation/ABI/testing/sysfs-block
View File

@ -279,3 +279,12 @@ Description:
size in 512B sectors of the zones of the device, with size in 512B sectors of the zones of the device, with
the eventual exception of the last zone of the device the eventual exception of the last zone of the device
which may be smaller. which may be smaller.
What: /sys/block/<disk>/queue/io_timeout
Date: November 2018
Contact: Weiping Zhang <zhangweiping@didiglobal.com>
Description:
io_timeout is the request timeout in milliseconds. If a request
does not complete in this time then the block driver timeout
handler is invoked. That timeout handler can decide to retry
the request, to fail it or to start a device recovery strategy.

7
Documentation/block/queue-sysfs.txt
View File

@ -67,6 +67,13 @@ If set to a value larger than 0, the kernel will put the process issuing
IO to sleep for this amount of microseconds before entering classic IO to sleep for this amount of microseconds before entering classic
polling. polling.
io_timeout (RW)
---------------
io_timeout is the request timeout in milliseconds. If a request does not
complete in this time then the block driver timeout handler is invoked.
That timeout handler can decide to retry the request, to fail it or to start
a device recovery strategy.
iostats (RW) iostats (RW)
------------- -------------
This file is used to control (on/off) the iostats accounting of the This file is used to control (on/off) the iostats accounting of the