[libvirt-users] automatically reverting to a snapshot

[Peter Krempa]

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On Tue, Jul 25, 2017 at 16:08:58 +0100, Dirty Dan wrote:
> <div dir='auto'>How can I automatically revert to a snapshot after the guest is stopped?<div dir="auto"><br></div><div dir="auto">/etc/libvirt/hooks/qemu
</div><div dir="auto">#!/bin/sh
</div><div dir="auto">name="<span class="money">$1</span>"
</div><div dir="auto">action="<span class="money">$2</span>"
</div><div dir="auto">if [ "$name" = "name" ]; then
</div><div dir="auto"> virsh snapshot-revert "$name" --snapshotname "snapshot1"
</div><div dir="auto">fi</div><div dir="auto"><br></div><div dir="auto">I tried this which resulted in a deadlock, then I saw the warning further down the page.</div></div>

The hook documentation explicitly states that no calls to libvirt shoudl
be executed from the hook.

You can start a process in background, which will terminate the hook and
that process should be able to do libvirt calls.
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