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| author | Mikulas Patocka <mpatocka@redhat.com> | 2022-07-11 16:31:26 -0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@kernel.org> | 2022-07-14 15:53:25 -0400 |
| commit | b2676e1482af89714af6988ce5d31a84692e2530 (patch) | |
| tree | e24eccff92e8ddd05e9e9ae169bc53afbc22ed77 /Documentation/admin-guide/device-mapper/writecache.rst | |
| parent | 2c6e755b49d273243431f5f1184654e71221fc78 (diff) | |
| download | linux-b2676e1482af89714af6988ce5d31a84692e2530.tar.gz linux-b2676e1482af89714af6988ce5d31a84692e2530.tar.bz2 linux-b2676e1482af89714af6988ce5d31a84692e2530.zip | |
dm writecache: count number of blocks written, not number of write bios
Change dm-writecache, so that it counts the number of blocks written
instead of the number of write bios. Bios can be split and requeued
using the dm_accept_partial_bio function, so counting bios caused
inaccurate results.
Fixes: e3a35d03407c ("dm writecache: add event counters")
Reported-by: Yu Kuai <yukuai1@huaweicloud.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Diffstat (limited to 'Documentation/admin-guide/device-mapper/writecache.rst')
| -rw-r--r-- | Documentation/admin-guide/device-mapper/writecache.rst | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/Documentation/admin-guide/device-mapper/writecache.rst b/Documentation/admin-guide/device-mapper/writecache.rst index 1fab82408ef1..0772d2160f9c 100644 --- a/Documentation/admin-guide/device-mapper/writecache.rst +++ b/Documentation/admin-guide/device-mapper/writecache.rst @@ -82,11 +82,11 @@ Status: 4. the number of blocks under writeback 5. the number of read blocks 6. the number of read blocks that hit the cache -7. the number of write requests -8. the number of write requests that hit uncommitted block -9. the number of write requests that hit committed block -10. the number of write requests that bypass the cache -11. the number of write requests that are allocated in the cache +7. the number of write blocks +8. the number of write blocks that hit uncommitted block +9. the number of write blocks that hit committed block +10. the number of write blocks that bypass the cache +11. the number of write blocks that are allocated in the cache 12. the number of write requests that are blocked on the freelist 13. the number of flush requests 14. the number of discard requests |