On Thu, Jun 22, 2017 at 11:02:41 -0400, Doug Hughes wrote: [...] > virsh blockcommit $vm $DISK --active --pivot > > Normally this works fine, though something went wrong on the 20th. > something happened to make the blockcommit fail, but the -snap file got > deleted (note to self - check return code from blockcommit command!) > > So now I'm in a state. The domain i still running. but it's running off > the -snapshot that is in the xml. I googled around for how to recover a > blockcommit from a deleted snapshot, but didn't find anything. (pointers > welcome) While it's still running you are lucky as the kernel did not delete the file until you shutdown the qemu process. There are these options: 1) if you don't care about the snapshot hierarchy, but want to save the full disk contents of the VM, you can use the block copy operation and copy everything into a new image. 2) If you removed the top level image (which it seems) you can even use shallow block copy, if you pre-create the new file properly. Then you can even keep the top layer properly. 3) If it's any other than top layer, with a new-enugh qemu and some QMP command magic, any layer can be restored, but that will require some work. Please let me know which option do you want to do and I can guide you further. Please just don't turn off the VM :)
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