Feature request: Btrfs commit stats

[rodrigol-chan]

Since Linux 6.0, we can get commit statistics from /sys/fs/btrfs/FS_ID/commit_stats, e.g.

$ cat /sys/fs/btrfs/01234567-89ab-cdef-0123-456789abcdef/commit_stats
commits 258051
last_commit_ms 1000
max_commit_ms 51462
total_commit_ms 47836090

[dongjiang1989]

Need to add parsing to proc first, and then add metrics to node exporter.

Procfs PR: prometheus/procfs#580

[maartenberg]

I've opened a PR to expose the commit statistics as metrics: #3010