Linux Advanced LINUX-065 · 22 min

LVM snapshot reaches 100 percent and the application filesystem stalls

The origin volume still has free space, but writes slow or freeze because the snapshot copy-on-write area filled and the backup workflow never released it.

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The origin volume still has free space, but writes slow or freeze because …

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LVM snapshot reaches 100 percent and the application filesystem stalls

A thin snapshot is mounted read-only while one housekeeping timer still tries to trim and purge inside it during a failover rehearsal

LVM thin pool reports plenty of virtual space but metadata exhaustion stops every write

Rsync transfer is complete but hard links were expanded and the backup target fills twice as fast

An LVM cache pool masks a failing SSD, and writeback mode keeps acknowledging writes until the cache metadata finally goes read-only