[ceph-users] RBD lock on unmount

[Joshua Collins]

Hi

I've set up a Ceph Cluster with and RBD storage device for use in a 
pacemaker/corosync cluster. When attempting to move the resources from 
one node to the other, the filesystem on the RBD will not unmount. lsof 
and fuser show no files in use on the device. I thought this may be an 
issue with an NFS lock, so I moved the ceph OSD and monitor off the 
machine where the filesystem is mounted to a virtual machine, however 
I'm still unable to unmount the filesystem.


Is this a known issue with RBD filesystem mounts? Is there a system 
change I need to make in order to get the filesystem to reliably unmount?


Thanks in advance,

--
*Joshua Collins*
Systems Engineer

VRT Systems 
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[ceph-users] Ceph Cluster with 3 Machines

[Joshua Collins]

Hi

I've had a go at setting up a Ceph cluster but I've ran into some issues.

I have 3 physical machines to set up a Ceph cluster, and two of these 
machines will be part of a HA pair using corosync and Pacemaker.


I keep running into filesystem lock issues on unmount when I have a 
machine running an OSD and monitor, while also mounting an RBD pool.


Moving the OSD and monitor to a VM so that I could mount the RBD on the 
host hasn't fixed the issue.


Is there a way to set this up to avoid the filesystem lock issues I'm 
encountering?


Thanks in advance

Josh
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