lvmcache doesn’t support snapshots yet

Filed under: — Stormwind @ 5:51 pm

Watch out – lvmcache doesn’t support snapshots yet! I discovered this when my backup system tried to create a snapshot of a filesystem to back up after I enabled lvmcache on it.

I removed the cache pool logical volume (disabling lvmcache for the volume) using lvremove, and will re-visit once lvmcache’d volumes have snapshot support (since snapshots are very important for consistent backups).

Background on lvmcache – it is a new LVM feature that uses dm-cache to cache blocks for slower storage (like a HDD) on faster storage (like a SSD) for faster access.

One response to “lvmcache doesn’t support snapshots yet”

  1. Bob says:

    Yeah, problem exist since 2014 and not fixe since then… After 4 years!

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