<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Dec 6, 2017 at 5:23 PM, Paolo Margara <span dir="ltr"><<a href="mailto:paolo.margara@polito.it" target="_blank">paolo.margara@polito.it</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p>I think that it could be useful.</p>
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<p>Greetings,</p>
<p> Paolo</p></div></blockquote><div><br></div><div>+1</div><div><br></div><div>BTW: I notice that the disk seems preallocated even if original qcow2 is thin... is this expected?</div><div>This obviously also impacts the time to upload (20Gb virtual disk with actual 1.2Gb occupied needs the time equivalent for full 20Gb...)</div><div><br></div><div>On source (created from virt-manager in Fedora 26):</div><div><br></div><div><div># qemu-img info c7lab1.qcow2</div><div>image: c7lab1.qcow2</div><div>file format: qcow2</div><div>virtual size: 20G (21474836480 bytes)</div><div>disk size: 1.2G</div><div>cluster_size: 65536</div><div>Format specific information:</div><div> compat: 1.1</div><div> lazy refcounts: true</div><div> refcount bits: 16</div><div> corrupt: false</div></div><div><br></div><div>After uploading on NFS storage domain:</div><div><br></div><div><div>[root@ovirt01 251063f6-5570-4bdc-b28f-21e82aa5e185]# qemu-img info 77aacfb3-9e67-4ad2-96f6-242b5ba4d9e0</div><div>image: 77aacfb3-9e67-4ad2-96f6-242b5ba4d9e0</div><div>file format: qcow2</div><div>virtual size: 20G (21474836480 bytes)</div><div>disk size: 20G</div><div>cluster_size: 65536</div><div>Format specific information:</div><div> compat: 1.1</div><div> lazy refcounts: true</div><div> refcount bits: 16</div><div> corrupt: false</div><div>[root@ovirt01 251063f6-5570-4bdc-b28f-21e82aa5e185]# </div></div><div> </div><div>Thanks,</div><div>Gianluca</div></div></div></div>