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Re: [libvirt-users] is it possible to create a snapshot from a guest residing in a plain partition ?



On 4/4/19 11:57 AM, Lentes, Bernd wrote:

> 
> virsh # snapshot-create-as --disk-only --name sn --domain sim
> error: unsupported configuration: source for disk 'vdb' is not a regular file; refusing to generate external snapshot name

That just means that libvirt refuses to create a new block device name
(new file names are easy, new block devices not so much); so you'll have
to tell libvirt what filename (which may or may not be a block device)
to use instead, with the --diskspec parameter.  Something like:

snapshot-create-as --disk-only --name sn --domain sim --diskspec
vdb,file=/path/to/file.sn

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org

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