One workaround that comes to my mind is to power up the VM, write a large file and delete it and run fstrim -av.<div>Another approach is to create an additional LV inside the guest, use dd to fill it in and then blkdiscard and delete the LV .</div><div><br><div>It will force the fisk to be fully allocated&nbsp;<br> <br>Best Regards,</div><div>Strahil Nikolov<br> <blockquote style="margin: 0 0 20px 0;"> <div style="font-family:Roboto, sans-serif; color:#6D00F6;">  </div> <div style="padding: 10px 0 0 20px; margin: 10px 0 0 0; border-left: 1px solid #6D00F6;"> Thanks Arik,<br clear="none"><br clear="none">Is there a fix that can be applied to current versions as 4.5 release and subsequent testing/approval is some way off/<div class="yqt5420183569" id="yqtfd88822"><br clear="none">_______________________________________________<br clear="none">Users mailing list -- <a shape="rect" ymailto="mailto:users@ovirt.org" href="mailto:users@ovirt.org">users@ovirt.org</a><br clear="none">To unsubscribe send an email to <a shape="rect" ymailto="mailto:users-leave@ovirt.org" href="mailto:users-leave@ovirt.org">users-leave@ovirt.org</a><br clear="none">Privacy Statement: <a shape="rect" href="https://www.ovirt.org/privacy-policy.html" target="_blank">https://www.ovirt.org/privacy-policy.html</a><br clear="none">oVirt Code of Conduct: <a shape="rect" href="https://www.ovirt.org/community/about/community-guidelines/" target="_blank">https://www.ovirt.org/community/about/community-guidelines/</a><br clear="none">List Archives: </div><a shape="rect" href="https://lists.ovirt.org/archives/list/users@ovirt.org/message/HXTHUA5QFBBCLMQPKM25ACANVVNL7XKC/" target="_blank">https://lists.ovirt.org/archives/list/users@ovirt.org/message/HXTHUA5QFBBCLMQPKM25ACANVVNL7XKC/</a><div class="yqt5420183569" id="yqtfd42992"><br clear="none"></div> </div> </blockquote></div></div>