January 19, 20251 yr Hi everybody, i fooled around with the snapshot feature after upgrading to Unraid 7 and now my VM won't start. Log attached. For starters, my vm was already snapshotted and backed up multiple times by script via the user scripts plugins. What's basically done every month after stopping the vm: qemu-img commit vdisk1.img rm vdisk1.img SNAPSHOT="vdisk1-snapshot$(date '+%Y%m%d').img" qemu-img convert -c -O qcow2 vdisk1-base.img $SNAPSHOT cp $SNAPSHOT vdisk1-base.img qemu-img create -f qcow2 -b vdisk1-base.img -F qcow2 vdisk1.img Now after upgrading to Unraid 7 (the VM ran fine) I tried snapshotting the VM which failed with some error. I thought it was because it was still running, so I stopped it and tried again. The snapshot worked this time, no error. Then I reverted the snapshot. Now the VM won't start, see the log attached. I've tried replacing vdisk1.img and vdisk1-base.img from backup, which didn't help. Edit: Unraid reboot didn't help either. Where do I find the write lock and how do I remove it? Thanks a lot for your help. vm.log Edited January 19, 20251 yr by motophil
January 19, 20251 yr Author Solution Found it. The xml was corrupted by the snapshot. Moral of the story: Don't mix unraid snapshots and custom snapshots.
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