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| author | Boris Burkov <boris@bur.io> | 2024-01-26 01:10:30 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2024-07-11 16:33:27 +0300 |
| commit | 243192b6764990e7fa0e22ea65b4d12f3294471c (patch) | |
| tree | 38098f9b81ec4cb868f993b165c8849dab006fe1 /fs/btrfs/sysfs.c | |
| parent | a5b3abb18c380177d3a994d30a2ab890f27b8df8 (diff) | |
| download | linux-243192b6764990e7fa0e22ea65b4d12f3294471c.tar.xz | |
btrfs: report reclaim stats in sysfs
When evaluating various reclaim strategies/thresholds against each
other, it is useful to collect data about the amount of reclaim
happening. Expose a count, error count, and byte count via sysfs
per space_info.
Note that this is only for automatic reclaim, not manually invoked
balances or other codepaths that use "relocate_block_group"
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Boris Burkov <boris@bur.io>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/sysfs.c')
| -rw-r--r-- | fs/btrfs/sysfs.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index af545b6b1190..919c7ba45121 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -894,6 +894,9 @@ SPACE_INFO_ATTR(bytes_readonly); SPACE_INFO_ATTR(bytes_zone_unusable); SPACE_INFO_ATTR(disk_used); SPACE_INFO_ATTR(disk_total); +SPACE_INFO_ATTR(reclaim_count); +SPACE_INFO_ATTR(reclaim_bytes); +SPACE_INFO_ATTR(reclaim_errors); BTRFS_ATTR_RW(space_info, chunk_size, btrfs_chunk_size_show, btrfs_chunk_size_store); BTRFS_ATTR(space_info, size_classes, btrfs_size_classes_show); @@ -949,6 +952,9 @@ static struct attribute *space_info_attrs[] = { BTRFS_ATTR_PTR(space_info, bg_reclaim_threshold), BTRFS_ATTR_PTR(space_info, chunk_size), BTRFS_ATTR_PTR(space_info, size_classes), + BTRFS_ATTR_PTR(space_info, reclaim_count), + BTRFS_ATTR_PTR(space_info, reclaim_bytes), + BTRFS_ATTR_PTR(space_info, reclaim_errors), #ifdef CONFIG_BTRFS_DEBUG BTRFS_ATTR_PTR(space_info, force_chunk_alloc), #endif |