<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On 20 October 2015 at 06:30, Fabrizio Cuseo <span dir="ltr"><<a href="mailto:f.cuseo@panservice.it" target="_blank">f.cuseo@panservice.it</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Moving from rbd to qcow2 caused all the disks to loose the sparse mode.</blockquote></div><br></div><div class="gmail_extra">This has been a problem for ages, I've brought it up in the past. It makes for incredibly slow and inefficient disk transfers when moving VM's large disks , even if they have only small amounts of data. Every zero gets transferred. Backups seem to be affected as well.<br></div><div class="gmail_extra"><br clear="all"><br>-- <br><div class="gmail_signature">Lindsay</div>
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