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Last active August 10, 2020 21:31
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messup.md
  1. I had a VM image at /var/lib/libvirt/images/windows10.raw.
  2. I messed something up in the image, so I tried to restore it from a previous snapshot by copying it: cp -av /var/.zfs/snapshot/snap/lib/libvirt/images/windows10.raw /var/lib/libvirt/images/windows10.raw.
  3. cp -av adds the contents of the snapshotted file, thus growing the VM image to 400+GB before I realize.
  4. I rm /var/lib/libvirt/images/windows10.raw to remove the 400G file and zfs destroy <all snaps of var with that huge file>
  5. I now have 27G free and ZFS doesn't seem to want to give any of the destroyed space back.
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