Re: [libvirt] libvirt disk labels and QEMU drive host alias generation
On Tue, Jun 14, 2016 at 12:50:09PM +0200, Kashyap Chamarthy wrote:
Summary
-------
It seems like libvirt is generating the same QEMU drive host
alias ('drive-virtio-disk%d') for different two disk labels (vdb, vdb1).
[Refer the contextual root cause analysis discussion at the end with
Laine & Peter.]
Let's take a quick example to demonstrate the issue.
On a guest that is shut down, attach a couplee of disks with labels
'vdb', and 'vdb1'
$ sudo virsh attach-disk cvm1 \
/export/vmimages/1.raw vdb --config
$ sudo virsh attach-disk cvm1 \
/export/vmimages/1.raw vdb1 --config
That second command is user error - hotplugging a disk partition
is nonsensical, except with Xen which allows that for paravirtualized
disks. We should reject such disk names with an error right away in
all other cases.
Regards,
Daniel
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