Replies: 5 comments · 9 replies
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Ok, answering my own question (partially), so if I leave "snapshot memory" off, I can take an instance snapshot while it is running. But still the question remains, if I have an UEFI instance in cloudstack, I cannot take a disk+memory snapshot of the instance? |
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I have never tried it (consciously). So I will have to test it, I have no idea really. I will try to find (someone to make) time to do it. By the looks of your error message it looks like a libvirt limitation, btw. so what version are you using? |
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I am using 4.22 KVM Ubuntu 24. Thanks |
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iirc that uses libvirt 10.0, right? |
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Hi @chunkyen, @DaanHoogland, from what I found this is supported in libvirt 10.9 (for taking snapshots) and in 10.10 is included support for delete/revert |
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I can test this with Libvirt 11, will report my results |
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@jgotteswinter Do you have any results yet to report? |
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I am working on adding a new hardware generation to our automation where i can test this. Its wip, but finished very soon |
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The problem still exists independent on the version of libvirt. I tried libvirt 11.10.0 The issue is the format of the nvram disk file. I converted it from raw to qcow2 and can now take snapshots with memory of VMs with UEFI. Here are my changes in the XML config: |
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@ingox , does this mean it is to be fixed in an issue (in libvirt)? |
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@DaanHoogland This would need to be fixed in CloudStack. At least it worked with libvirt 11.10.0. I haven't tested the format change (raw to qcow2) with older versions of libvirt. |
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Hi, when taking a snapshot of an UEFI VM, I get "Creating VM snapshot: xxx failed due to Create VM snapshot failed due to org.libvirt.LibvirtException: Operation not supported: internal snapshots of a VM with pflash based firmware are not supported"
Understand this is a limitation of libvirt that it cannot snapshot the pflash based firmware/NVRAM while the instance is running. I can only take snapshot if I power off the instance.
But I also read that recent version of libvirt does support live instance snapshot if it is using qcow2 format firmware. Is there something I can configure in CloudStack to change this so that live snapshot of UEFI instance work?
Thanks
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