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stats: remove nonsense dedup_unique_bytes stat

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A long time ago, when bees used dedicated threads to scan each subvol, the
calculation of the "dedup_unique_bytes" statistic was still wrong.

This stat can only be calculated when dedupe runs on extent data items
instead of extent reference items.  Remove the stat variable until
that happens.

Signed-off-by: Zygo Blaxell <bees@furryterror.org>
This commit is contained in:
Zygo Blaxell
2020-12-13 13:46:29 -05:00
parent 1b9b437c11
commit 8e9b53b3fd
2 changed files with 0 additions and 6 deletions
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docs/event-counters.md
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@@ -151,7 +151,6 @@ The `dedup` event group consists of operations that deduplicate data.
* `dedup_prealloc_hit`: Total number of successfully eliminated `PREALLOC` extent references.
* `dedup_prealloc_hit`: Total number of unsuccessfully eliminated `PREALLOC` extent references (i.e. filesystem data changed between scan and dedupe).
* `dedup_try`: Total number of pairs of extent references submitted for deduplication.
* `dedup_unique_bytes`: Total bytes in extent data items deduplicated. The implementation of this counter is wrong.
* `dedup_workaround_btrfs_send`: Total number of extent reference pairs submitted for deduplication that were discarded to workaround `btrfs send` bugs.
exception