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Bug
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Resolution: Unresolved
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Normal
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None
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rhel-10.0
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No
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Low
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rhel-sst-virt-tools
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ssg_virtualization
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None
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False
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None
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None
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None
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None
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None
What were you trying to do that didn't work?
Overlay file can't be removed when reverting from external to internal snapshot
This bug is from https://issues.redhat.com/browse/RHEL-75154.
What is the impact of this issue to you?
Corner case
Please provide the package NVR for which the bug is seen:
libvirt-10.10.0-5.el10.x86_64
qemu-kvm-9.1.0-13.el10.x86_64
How reproducible is this bug?:
100%
Steps to reproduce
1. Prepare a running q35 guest. # virsh dumpxml rhel --xpath //os <os> <type arch="x86_64" machine="pc-q35-rhel9.4.0">hvm</type> <boot dev="hd"/> </os> 2. Create an internal snapshot and an external snapshot. # virsh snapshot-create-as rhel s1 Domain snapshot s1 created # virsh snapshot-create-as rhel s2 --memspec file=/tmp/rhel.s2,snapshot=external Domain snapshot s2 created # virsh dumpxml rhel --xpath //disk <disk type="file" device="disk"> <driver name="qemu" type="qcow2"/> <source file="/var/lib/libvirt/images/rhel.s2" index="2"/> <backingStore type="file" index="1"> <format type="qcow2"/> <source file="/var/lib/libvirt/images/rhel.qcow2"/> <backingStore/> </backingStore> <target dev="vda" bus="virtio"/> <alias name="virtio-disk0"/> <address type="pci" domain="0x0000" bus="0x04" slot="0x00" function="0x0"/> </disk> 3. Revert snapshot to the internal snapshot. # virsh snapshot-revert rhel s1 Domain snapshot s1 reverted # virsh dumpxml rhel --xpath //disk <disk type="file" device="disk"> <driver name="qemu" type="qcow2"/> <source file="/var/lib/libvirt/images/rhel.qcow2" index="1"/> <backingStore/> <target dev="vda" bus="virtio"/> <alias name="virtio-disk0"/> <address type="pci" domain="0x0000" bus="0x04" slot="0x00" function="0x0"/> </disk> 4. Delete the external snapshot. # virsh snapshot-delete rhel s2 Domain snapshot s2 deleted 5. Check the snapshot related images. # ll /var/lib/libvirt/images/rhel. rhel.qcow2 rhel.s2
Expected results
The overlay file rhel.s2 need to be removed
Actual results
The overlay file rhel.s2 still exists.
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