<div dir="ltr">Hi all,<div><br><div>    I've recently been toying with VM snapshots, and have ran into an issue. Given a VM with multiple disks, it seems a snapshot-create followed by a snapshot-delete will only remove the qcow2 snapshot for the first disk (or perhaps just the disk that contains the memory), not all of the disk snapshots it created. Is this something people are aware of? </div><div><br></div><div>    In searching around, I found a bug report where snapshot-creates would fail due to the qcow2 snapshot ids being inconsistent. That looks like it is patched for 2.4 qemu (<a href="http://lists.nongnu.org/archive/html/qemu-devel/2015-03/msg04963.html">http://lists.nongnu.org/archive/html/qemu-devel/2015-03/msg04963.html</a>), this bug would trigger that one by leaving IDs around that are inconsistent between member disks, but is not the same.</div>







</div><div><br></div><div>







<p class=""><span class=""># virsh snapshot-create 7</span></p>
<p class=""><span class="">Domain snapshot 1436792720 created</span></p><p class=""><span class=""><br></span></p>
<p class=""><span class=""># virsh snapshot-list 7</span></p>
<p class=""><span class=""> Name                 Creation Time             State</span></p>
<p class=""><span class="">------------------------------------------------------------</span></p>
<p class=""><span class=""> 1436792720           2015-07-13 06:05:20 -0700 running</span></p>
<p class=""><span class=""></span><br></p>
<p class=""># virsh domblklist 7<br></p>
<p class=""><span class="">Target     Source</span></p>
<p class=""><span class="">------------------------------------------------</span></p>
<p class=""><span class="">vda        /mnt/2a270ef3-f389-37a4-942f-380bed9f70aa/e4d6e885-1382-40bc-890b-ad9c8b51a7a5</span></p>
<p class=""><span class="">vdb        /mnt/2a270ef3-f389-37a4-942f-380bed9f70aa/7033e4c6-5f59-4325-b7e0-ae191e12e86c</span></p>
<p class=""><span class=""></span><br></p>
<p class=""><span class=""># qemu-img snapshot -l  /mnt/2a270ef3-f389-37a4-942f-380bed9f70aa/e4d6e885-1382-40bc-890b-ad9c8b51a7a5</span></p>
<p class=""><span class="">Snapshot list:</span></p>
<p class=""><span class="">ID        TAG                 VM SIZE                DATE       VM CLOCK</span></p>
<p class=""><span class="">1         1436792720             173M 2015-07-13 06:05:20   00:01:10.938</span></p><p class=""><span class=""><br></span></p>
<p class=""><span class=""># qemu-img snapshot -l  /mnt/2a270ef3-f389-37a4-942f-380bed9f70aa/7033e4c6-5f59-4325-b7e0-ae191e12e86c</span></p>
<p class=""><span class="">Snapshot list:</span></p>
<p class=""><span class="">ID        TAG                 VM SIZE                DATE       VM CLOCK</span></p>
<p class=""><span class="">1         1436792720                0 2015-07-13 06:05:20   00:01:10.938</span></p><p class=""><span class=""><br></span></p>
<p class=""><span class=""># virsh snapshot-delete 7 1436792720</span></p>
<p class=""><span class="">Domain snapshot 1436792720 deleted</span></p><p class=""><span class=""><br></span></p>
<p class=""><span class=""># qemu-img snapshot -l  /mnt/2a270ef3-f389-37a4-942f-380bed9f70aa/e4d6e885-1382-40bc-890b-ad9c8b51a7a5</span></p>
<p class=""><span class=""># qemu-img snapshot -l  /mnt/2a270ef3-f389-37a4-942f-380bed9f70aa/7033e4c6-5f59-4325-b7e0-ae191e12e86c</span></p>
<p class=""><span class="">Snapshot list:</span></p>
<p class=""><span class="">ID        TAG                 VM SIZE                DATE       VM CLOCK</span></p>
<p class=""><span class="">1         1436792720                0 2015-07-13 06:05:20   00:01:10.938</span></p></div></div>