LVM Snapshot VG insufficient free space

galapogos01 · 21. August 2022

Hi guys,

I am trying to play around with LVM snapshots on ext4. I have shrunk my fs, shrunk my volume and now have 10% free space in my VG. When I go to create a snapshot in the GUI I get

Code

00 - Internal Server Error
Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C.UTF-8; export LANGUAGE=; lvcreate --snapshot --name 'XXX_snapshot_20220821-140808' --size 7032627200K '/dev/mapper/XXX-XXX' 2>&1' with exit code '5': File descriptor 3 (socket:[16624]) leaked on lvcreate invocation. Parent PID 113640: sh File descriptor 4 (socket:[503963]) leaked on lvcreate invocation. Parent PID 113640: sh Volume group "XXX" has insufficient free space (190772 extents): 1716950 required.

There is no way to specify a snapshot size in the GUI and it is trying to create a snapshot as large as the volume itself.

Is there a way to create smaller snapshot?

ryecoaaron · 21. August 2022

Zitat von galapogos01

create a snapshot as large as the volume itself.

After looking at the code, that is what it does. Seems a bit much but it does guarantee not filling it.

Zitat von galapogos01

Is there a way to create smaller snapshot?

Command line will work fine.

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