<p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="4" style="font: 13.0px Helvetica">Hey :)</font></p>
<p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="4" style="font: 13.0px Helvetica">so what was happening is that basically the FS was just working fine on basic operations (meaning that don’t involve much I/O load), but when it came to migrate instances, the FS made the load on the server increase, and all of a sudden, the server hanged (kernel panic), and every time I had to reboot.</font></p>
<p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="4" style="font: 13.0px Helvetica">I’ve been able to reproduce that exact behaviour on three different servers (that passed the iozone/ bonnie++/ vdbench tests without hanging)</font></p>
<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 13.0px Helvetica; min-height: 16.0px"><br></p>
<p style="margin: 0.0px 0.0px 0.0px 0.0px"><font face="Helvetica" size="4" style="font: 13.0px Helvetica">Regarding Ceph RBD, if I’m not mistaken, you cannot use it as a shared disk since you still need to put a FS on it</font></p>
<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 13.0px Helvetica; min-height: 16.0px"><br></p>
<br /><p style="color:#A0A0A8;">On November 4, 2013 at 2:02:48, Maciej Gałkiewicz (<a href="mailto://macias@shellycloud.com">macias@shellycloud.com</a>) wrote:</p> <blockquote type="cite" class="clean_bq"><span><div ><div>
<title></title>
<div dir="ltr">
<div class="gmail_extra">
<div class="gmail_quote">On 4 November 2013 10:46, Julien De
Freitas <span dir="ltr"><<a href="mailto:bada.boum@outlook.com"
target="_blank">bada.boum@outlook.com</a>></span> wrote:<br />
<blockquote class="gmail_quote" style=
"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
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<div dir="ltr">Hi Razique,
<div><br /></div>
<div>Thanks for the link !</div>
<div>I read the full discussion and as I tought there is no real
perfect solution so far.</div>
<div>I think i'll continue to use nexenta because it's a great
solution and i'll set up multi back end storage for cinder in order
to test ceph block storage.</div>
<div>For meta data storage i'll do some test with CephFS because
not production ready mean a lot and nothing at the same
time. </div>
<div>I your previsous mail you said <span style=
"font-family:Helvetica,Arial;font-size:13px"> "</span><span style="font-family:Helvetica,Arial;font-size:13px">the
FS kept hanging on high load, so I considered it to be pretty
unstable for OpenStack", but if it was </span><span style=
"font-family:Helvetica,Arial;font-size:13px"> </span><span style="font-family:Helvetica,Arial;font-size:13px">kept
hanging on high load it should be pretty stable ? what was the load
? Can you share more detail with us ?</span></div>
<div>That's a pity that we could not find any neutral heavy test
out there.</div>
</div>
</div>
</blockquote>
<div><br /></div>
<div>If you consider Ceph you should take a look at Ceph RBD not
CephFS (<a href=
"http://ceph.com/docs/master/rbd/rbd/">http://ceph.com/docs/master/rbd/rbd/</a>).
It is stable and works great for me.</div>
</div>
<div><br /></div>
--<br />
Maciej Gałkiewicz<br />
Shelly Cloud Sp. z o. o., Sysadmin<br />
<a href="http://shellycloud.com/" target=
"_blank">http://shellycloud.com/</a>, <a href=
"mailto:macias@shellycloud.com" target=
"_blank">macias@shellycloud.com</a><br />
KRS: 0000440358 REGON: 101504426</div>
</div>
</div></div></span></blockquote> <div id="bloop_sign_"><span style="font-family:helvetica,arial;font-size:13px"></span>-- <br>Razique Mahroua<br><br></div>