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VM's vanished after unclean shutdown - "Libvirt Service failed to start."

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Hi All,

 

Recently had an unclean shutdown - just tapped off the power switch by accident.  After rebooting the two vm's I have set up (windows and linux) were missing.   When I stopped and started the VM service it failed to start, giving the error "Libvirt Service failed to start."  I am pointing to the proper ISOs folder, domains folder, and libvert image directly. I am running 6.6.3 but was running 6.6.1 when it happened. 

 

I have tried rebooting the box.  On fresh boot it will show th VM's tab with no images.  On restarting the VM service I will receive the error noted above.

 

image.thumb.png.1137291ee3f139e2dccb03c7793a624e.png

tower-diagnostics-20181102-1656.zip

libvirt.img appears to have started fine the first time, then it was stopped and didn't start anymore because of this:

Nov  2 16:49:20 Tower root: /mnt/user/system/libvirt/libvirt.img is in-use, cannot mount

 

Try rebooting, if it doesn't start after boot grab and post new diags.

  • Author

Hi, I've rebooted - same behavior.  VM TAB appears, but the two VMs I have installed are not there.  Fresh diagnostics attached.

image.thumb.png.850c6a5fdda432cbb440aea5ed4c1d3f.png

tower-diagnostics-20181102-1656.zip

  • Author

Fuuuuuu....  The Domains share which contained my VM instances is empty... wtf, how could this happen?

Have you tried rebooting in Safe Mode?    This would eliminate any plugins as being the cause of your problem.

 

You might want to also try running a file system check on the cache (where I presume the VMs vdisk files are held) as corruption at that level could also cause the symptoms you describe.  If you do not have a cache then you need to run it on the array drive holding the vdisk images.

Edited by itimpi

1 hour ago, cablecutter said:

The Domains share which contained my VM instances is empty... wtf, how could this happen?

Currently there's no cache device, should there be one?

 

Also a good idea to keep a current backup of libvirt.img, that's where the XML for the VMs are stored.

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