I&#39;ve read about that in the mailing list, but all the messages were quite old, and always referencing old kernels, so I decided to post it again.<br><br>My system is as follows:<br>Linux 2.6.32-131.17.1.el6.x86_64 #1 SMP Wed Oct 5 17:19:54 CDT 2011 x86_64 x86_64 x86_64 GNU/Linux<br>
<br>cman-3.0.12-23.el6.x86_64<br>corosynclib-1.2.3-21.el6.x86_64<br>corosync-1.2.3-21.el6.x86_64<br>lvm2-devel-2.02.88-3.el6.x86_64<br>lvm2-libs-2.02.88-3.el6.x86_64<br>lvm2-cluster-2.02.88-3.el6.x86_64<br>lvm2-2.02.88-3.el6.x86_64<br>
<br>I am running LVM as a cluster as:<br>clvmd -T30<br><br>The discs on the LVM groups are all on a SAN connected with FC.<br><br>I am working in a two-node cluster.<br><br>As I needed to use the snapshot features I have some volumes just active in one of the nodes. As far as I know this is the only way to snapshot volumes.<br>
<br>Everything works fine. I am able to create volumes. I am able to put volumes in &quot;exclusive use&quot; and it gives me the capability of snapshot. Snapshooting works fine.<br><br>My problem comes when I &quot;lvremove&quot; a snapshot. It seems to work fine, and the snapshot is removed, but, whatever LVM command I execute after that hangs forever in an &quot;uninterruptible sleep&quot; (D).<br>
<br>After that, for a while, I can see some errors on the log(attached messages.log). After a while those messages stop, but LVM command yet won&#39;t respond.<br><br>The rest of the system works perfectly, the only problem is that I cannot make modifications on LVM system.<br>
<br>The only way to solve the problem is by rebooting the machine.<br><br>As a note say this only happens &quot;lvremoving&quot; a snapshot. Removing a volume works fine.<br><br>I don&#39;t know if I am doing something wrong, as I read that problem use to happen with older versions but it was supposedly solved.<br>
<br>Does someone else have this problem?<br><br>Thanks a lot.<br>