cannot trim whonix-ws template anymore

[Sven Semmler]

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Hi,

I regularly trim my templates after updating them. I don't recall this
process ever being interrupted, but it appears that something got
corrupted once when trimming whonix-ws. What I have already done:

* deleted /var/lib/qubes/appvms/trim-whonix-ws multiple times
* completely uninstalled and reinstalled the whonix templates

Never the less, I get the following error:

Disk usage before:
2574760 /var/lib/qubes/vm-templates/whonix-ws/root.img
Creating temporary VM...
Traceback (most recent call last):
File "/usr/bin/qvm-trim-template", line 172, in <module>
main()
File "/usr/bin/qvm-trim-template", line 115, in main
fstrim_vm.create_on_disk()
File "/usr/lib64/python2.7/site-packages/qubes/modules/000QubesVm.py",
line 1317, in create_on_disk
self._update_libvirt_domain()
File "/usr/lib64/python2.7/site-packages/qubes/modules/000QubesVm.py",
line 764, in _update_libvirt_domain
raise e
libvirt.libvirtError: operation failed: domain 'trim-whonix-ws' already
exists with uuid 34bfb7d4-b96d-4d8d-9042-53e212761316

It appears that the VM 'trim-whonix-ws' gets created during the trim
operation and that the operation now fails, since the same name is
already registered somewhere. I checked /var/lib/qubes/qubes.xml ...
it's not in there.

Any ideas where to check?

/Sven



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[yura...@gmail.com]

This is a temporary folder being made in the /var/lib/qubes/appvms/ despite it being a template. It creates the volatile .img in the /appvms/ folder, before fixing the template folder in /var/lib/qubes/vm-templates.

Therefore, try look at /var/lib/qubes/appvms/trim-whonix-ws/

Like you suggested, I would also try move the folder away, and see if it fixes things without breaking something. I haven't done this before, but perhaps it's best to make a quick copy backup of whonix-ws first, just to be safe.

Also, try trim another template (where trim works and succeeds), while having the window manager open at /var/lib/qubes/appvms/, you will notice the temporary folder being made, while the trimming is working.

[Noor Christensen]

On Wed, Oct 18, 2017 at 06:50:13PM -0700, yura...@gmail.com wrote:
> [...]

If it still does not work, you could use virsh to force removal of the
Xen domain:

$ virsh destroy 34bfb7d4-b96d-4d8d-9042-53e212761316
$ virsh undefine 34bfb7d4-b96d-4d8d-9042-53e212761316
$ virsh vol-delete --pool vg0 34bfb7d4-b96d-4d8d-9042-53e212761316.img

Make sure you use the correct UUID when running these commands. It
should be the one from that error message you quoted:

> > libvirt.libvirtError: operation failed: domain 'trim-whonix-ws' already
> > exists with uuid 34bfb7d4-b96d-4d8d-9042-53e212761316

-- noor

|_|O|_|
|_|_|O| Noor Christensen
|O|O|O| 0x401DA1E0

[Sven Semmler]

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On 10/20/2017 10:25 AM, Noor Christensen wrote:
> $ virsh undefine 34bfb7d4-b96d-4d8d-9042-53e212761316

Thank you Noor!

The above command did the trick.

/Sven


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