<div dir="ltr">I am slightly confused you say you have image file corruption but then you say the qemu-img check says there is no corruption. If what you mean is that you see I/O errors during a heal this is likely to be due to io starvation, something that is a well know issue.<div><br></div><div>There is work happening to improve this in version 3.8:</div><div><br></div><div><a href="https://bugzilla.redhat.com/show_bug.cgi?id=1269461">https://bugzilla.redhat.com/show_bug.cgi?id=1269461</a><br></div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On 19 May 2016 at 09:58, Kevin Lemonnier <span dir="ltr"><<a href="mailto:lemonnierk@ulrar.net" target="_blank">lemonnierk@ulrar.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">That's a different problem then, I have corruption without removing or adding bricks,<br>
as mentionned. Might be two separate issue<br>
<div class="HOEnZb"><div class="h5"><br>
<br>
On Thu, May 19, 2016 at 11:25:34PM +1000, Lindsay Mathieson wrote:<br>
> On 19/05/2016 12:17 AM, Lindsay Mathieson wrote:<br>
><br>
> One thought - since the VM's are active while the brick is<br>
> removed/re-added, could it be the shards that are written while the<br>
> brick is added that are the reverse healing shards?<br>
><br>
> I tested by:<br>
><br>
> - removing brick 3<br>
><br>
> - erasing brick 3<br>
><br>
> - closing down all VM's<br>
><br>
> - adding new brick 3<br>
><br>
> - waiting until heal number reached its max and started decreasing<br>
><br>
> There were no reverse heals<br>
><br>
> - Started the VM's backup. No real issues there though one showed IO<br>
> errors, presumably due to shards being locked as they were healed.<br>
><br>
> - VM's started ok, no reverse heals were noted and eventually Brick 3 was<br>
> fully healed. The VM's do not appear to be corrupted.<br>
><br>
> So it would appear the problem is adding a brick while the volume is being<br>
> written to.<br>
><br>
> Cheers,<br>
><br>
> --<br>
> Lindsay Mathieson<br>
<br>
</div></div><div class="HOEnZb"><div class="h5">> _______________________________________________<br>
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<br>
<br>
--<br>
Kevin Lemonnier<br>
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