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vashirov opened this issue Apr 28, 2025 · 5 comments
Closed

Unable to delete vm snapshot #806

vashirov opened this issue Apr 28, 2025 · 5 comments

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@vashirov
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$ kcli create vm -i fedora42 fedora42
Deploying vm fedora42 from image fedora42...
Creating dns entry for fedora42 in network default
Waiting 5 seconds to grab ip...
Waiting 5 seconds to grab ip...
Waiting 5 seconds to grab ip...
fedora42 created on local

$ kcli create vm-snapshot -n fedora42 snapshot1
Creating snapshot of fedora42 named snapshot1...
fedora42 snapshotted

$ kcli delete vm-snapshot -n fedora42 snapshot1
Deleting snapshot snapshot1 of vm fedora42...
Traceback (most recent call last):
  File "/usr/bin/kcli", line 33, in <module>
    sys.exit(load_entry_point('kcli==99.0', 'console_scripts', 'kcli')())
             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/site-packages/kvirt/cli.py", line 5271, in cli
    args.func(args)
    ~~~~~~~~~^^^^^^
  File "/usr/lib/python3.13/site-packages/kvirt/cli.py", line 3012, in snapshotdelete_vm
    result = k.delete_snapshot(snapshot, name)
  File "/usr/lib/python3.13/site-packages/kvirt/providers/kvm/__init__.py", line 1550, in delete_snapshot
    vm.blockCommit(disk_name, base_path, snapshot_path, 0, VIR_DOMAIN_BLOCK_COMMIT_ACTIVE)
    ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib64/python3.13/site-packages/libvirt.py", line 928, in blockCommit
    raise libvirtError('virDomainBlockCommit() failed')
libvirt.libvirtError: invalid argument: could not find image '/var/lib/libvirt/images/fedora42_0.img' beneath '/var/lib/libvirt/images/fedora42_0.img' in chain for 'vda'

virsh doesn't have problems to delete it:

$ sudo virsh snapshot-delete fedora42 snapshot1
Domain snapshot snapshot1 deleted
@karmab
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karmab commented Apr 30, 2025

I m not able to reproduce this error, make sure you have latest

@vashirov
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I have kcli-99.0.0.git.202504300602.07f1888-0.fc42.x86_64

I tracked down the issue to my config. I have 2 networks for all my VMs:

  nets:
  - default
  - external

# virsh net-list
 Name       State    Autostart   Persistent
---------------------------------------------
 default    active   yes         yes
 external   active   yes         yes

# virsh net-dumpxml external
<network connections='2'>
  <name>external</name>
  <uuid>773b4a67-5a2c-4ea4-806e-5cf58532e1e9</uuid>
  <forward dev='eno1' mode='bridge'>
    <interface dev='eno1' connections='2'/>
  </forward>
</network>

If I comment out external network in the config, I can delete snapshots.

@karmab
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karmab commented Apr 30, 2025

also tried with a 2 nic vm (plugged to both default and bridge network) and I still cant reproduce :(

@vashirov
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Sorry, let me clarify. I had an external network created:

kcli create network -P macvtap=true -P nic=eno1 external

Then in the ~/.kcli/config.yml file I have:

default:
..
  nets:
  - default
  - external

@karmab
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karmab commented Apr 30, 2025

should be addressed by 05cd68d

@karmab karmab closed this as completed May 10, 2025
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@vashirov @karmab
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