On Mon, Feb 20, 2017 at 11:08 PM, Nir Soffer <nsof...@redhat.com> wrote:
> On Tue, Feb 14, 2017 at 12:07 AM, Gianluca Cecchi < > gianluca.cec...@gmail.com> wrote: > >> Hello, >> I'm on 4.1 with 2 FC SAN storage domains and testing live migration of >> disk. >> >> I started with a CentOS 7.3 VM with a thin provisioned disk of 30Gb. >> It seems that I can see actual disk size in VM--> Snapshots--> Active VM >> line and the right sub pane. >> If I remember correctly before the live storage migration the actual size >> was 16Gb. >> But after the migration it shows actual size greater than virtual (33Gb)?? >> > > Hi Gianluca, > > This is possible for thin disks. > > With thin disk we have some overhead for qcow2 metadata, which can be > up to 10% in the worst case. So when doing operations on thin disk, we > may enlarge it to the virtual size * 1.1, which is 33G for 30G disk. > > Can you share the output of this commands? > > (If the vm is running, you should skip the lvchange commands) > > lvchange -ay 5ed04196-87f1-480e-9fee-9dd450a3b53b/9af3574d-dc83-485f- > b906-0970ad09b660he > > qemu-img check /dev/5ed04196-87f1-480e-9fee-9dd450a3b53b/9af3574d-dc83- > 485f-b906-0970ad09b660he > > lvchange -an 5ed04196-87f1-480e-9fee-9dd450a3b53b/9af3574d-dc83-485f- > b906-0970ad09b660he > > Nir > > >> >> Yes, the VM is active. In this moment the disk name seems to be without the final "he" letters.... [root@ovmsrv07 ~]# qemu-img check /dev/5ed04196-87f1-480e-9fee-9dd450a3b53b/9af3574d-dc83-485f-b906-0970ad09b660 No errors were found on the image. 41734/491520 = 8.49% allocated, 3.86% fragmented, 0.00% compressed clusters Image end offset: 2736128000 [root@ovmsrv07 ~]#
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