<div dir="auto"><div><br><div class="gmail_extra"><br><div class="gmail_quote">On May 4, 2017 10:09 PM, "Michal Skrivanek" <<a href="mailto:michal.skrivanek@redhat.com">michal.skrivanek@redhat.com</a>> wrote:<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="quoted-text"><br>
> On 4 May 2017, at 17:51, Gianluca Cecchi <<a href="mailto:gianluca.cecchi@gmail.com">gianluca.cecchi@gmail.com</a>> wrote:<br>
><br>
> Hello,<br>
> supposing to have a Linux VM with ovirt-guest-agent installed, during a live snapshot operation it should be freeze of filesystems.<br>
> Where to find confirmation of correct/successful interaction?<br>
<br>
</div>if it’s not successful there should be an event log message about that. And prior to taking the snapshot a warning in red at the bottom of the dialog (that check happens when you open the dialog, so it may not be 100% reliable)<br>
<div class="quoted-text"><br>
> /var/log/messages or agent log or other kind of files?<br>
<br>
</div>if you want to doublecheck then this is noticable in vdsm.log. First we try to take the snapshot with fsfreeze, and only when it fails we take it again without it.<br>
<div class="quoted-text"><br>
> Are there any limitations on filesystems that support freeze? Is it fsfreeze the command executed at VM OS level or any other low level command?<br>
<br>
</div>It’s a matter of Linux and Windows implementation, they both have an API supporting that at kernel level. I’m not aware of filesystem limitations.<br></blockquote></div></div></div><div dir="auto"><br></div><div dir="auto">If you use Windows and the qemu-ga, it'd call VSS, which, if supported by applications (ranging from Notepad to SQL server) will provide application consistent snapshot. </div><div dir="auto">Y. </div><div dir="auto"><br></div><div dir="auto"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Thanks,<br>
michal<br>
<br>
><br>
> Thanks,<br>
> Gianluca<br>
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