On 11/06/2015 10:48 PM, Soumya Koduri wrote:
On 11/05/2015 08:43 PM, Surya K Ghatty wrote:
All... I need your help! I am trying to setup Highly available
Active-Active Ganesha configuration on two glusterfs nodes based on
instructions here:
https://gluster.readthedocs.org/en/latest/Administrator%20Guide/Configuring%20HA%20NFS%20Server/
and
http://www.slideshare.net/SoumyaKoduri/high-49117846 and
https://www.youtube.com/watch?v=Z4mvTQC-efM.
*My questions:*
1. what is the expected behvaior? Is the cluster.enable-shared-storage
command expected to create shared storage? It seems odd to return a
success message without creating the shared volume.
The volume set option we use to create the shared storage relies on a
hook script to be installed, and we currently don't have a check to see
if the hook script is present or not(we would be adding this soon). The
hook script goes by the name of S32gluster_enable_shared_storage.sh, and
needs to be copied to "/var/lib/glusterd/hooks/1/set/post/".
In case it is not present, we would see the behaviour you are currently
seeing. Please check if the hook script is present in the above
location, and if not kindly copy it from "extras/hook-scripts/set/post/"
in the gluster source repo to "/var/lib/glusterd/hooks/1/set/post/".
2. Any suggestions on how to get past this problem?
*Details:*
I am using glusterfs 3.7.5 and Ganesha 2.2.0.6 installable packages. I'm
installing
Also, I am using the following command
gluster volume set all cluster.enable-shared-storage enable
that would automatically setup the shared_storage directory under
/run/gluster/ and automounts the shared volume for HA.
This command was working perfectly fine, and I was able to setup ganesha
HA successfully on cent OS 7.0 running on bare metals - until now.
[root@qint-tor01-c7 gluster]# gluster vol set all
cluster.enable-shared-storage enable
volume set: success
[root@qint-tor01-c7 gluster]# pwd
/run/gluster
[root@qint-tor01-c7 gluster]# ls
5027ba011969a8b2eca99ca5c9fb77ae.socket shared_storage
changelog-9fe3f3fdd745db918d7d5c39fbe94017.sock snaps
changelog-a9bf0a82aba38610df80c75a9adc45ad.sock
Yesterday, we tried to deploy Ganesha HA with Gluster FSAL on a
different cloud. and when I run the same command there, (same version of
glusterfs and ganesha, same cent OS 7) - the command returned
successfully, but it did not auto create the shared_storage directory.
There were no logs either in
/var/log/glusterfs/etc-glusterfs-glusterd.vol.log
or /var/log/ganesha.log related to the command.
However, I do see these logs written to the
etc-glusterfs-glusterd.vol.log
[2015-11-05 14:43:00.692762] W [socket.c:588:__socket_rwv] 0-nfs: readv
on /var/run/gluster/9d5e1ba5e44bd1aa3331d2ee752a806a.socket failed
(Invalid argument)
on both ganesha nodes independent of the commands I execute.
regarding this error, I did a ss -x | grep
/var/run/gluster/9d5e1ba5e44bd1aa3331d2ee752a806a.socket
and it appears that no process was using these sockets, on either
machines.
My questions:
1. what is the expected behvaior? Is the cluster.enable-shared-storage
command expected to create shared storage? It seems odd to return a
success message without creating the shared volume.
yes. This command creates the volume "gluster_shared_storage" and
mounts it at '/run/gluster/shared_storage'.
2. Any suggestions on how to get past this problem?
Has the "gluster_shared_storage" volume creation itself failed? Verify
in 'gluster volume info'.
Also check if the gluster nodes are in healthy state 'gluster peer
status'. Try restarting 'glusterd' service on both the nodes.
CCin Avra who may provide more details.
Thanks,
Soumya
Regards,
Surya Ghatty
"This too shall pass"
________________________________________________________________________________________________________
Surya Ghatty | Software Engineer | IBM Cloud Infrastructure Services
Development | tel: (507) 316-0559 | ghatty@xxxxxxxxxx
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