Re: How to enable shared_storage?

[Jiffin Tony Thottan <jthottan@xxxxxxxxxx>]

On 21/11/16 11:13, Alexandr Porunov wrote:

Version of glusterfs is 3.8.5

Here what I have installed:

rpm  -ivh  http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-8.noarch.rpm

yum install centos-release-gluster

yum install glusterfs-server

It should be part of glusterfs-server. So can u check files provided by this, run rpm -qil <full name of glusterfs-server rpm>

yum install glusterfs-geo-replication

Unfortunately it doesn't work if I just add the script "/var/lib/glusterd/hooks/1/set/post/S32gluster_enable_shared_storage.sh" and restart "glusterd".

I didn't get that, when u rerun gluster v set all cluster.enable-shared-storage enable should work (I guess even glusterd restart is not required)
Or do u have any volumes named "gluster_shared_storage", if yes please remove it and rerun the cli.

--
Jiffin

It seems that I have to install something else..

Sincerely,

Alexandr

On Mon, Nov 21, 2016 at 6:58 AM, Jiffin Tony Thottan <jthottan@xxxxxxxxxx> wrote:

On 21/11/16 01:07, Alexandr Porunov wrote:

I have installed it from rpm. No that file isn't there. The folder "/var/lib/glusterd/hooks/1/set/post/" is empty..

which gluster version and what all gluster rpms have u installed?
For time being just download this file[1] and copy to  above location and rerun the same cli.

[1] https://github.com/gluster/glusterfs/blob/master/extras/hook-scripts/set/post/S32gluster_enable_shared_storage.sh

--
Jiffin

Sincerely,

Alexandr

On Sun, Nov 20, 2016 at 2:55 PM, Jiffin Tony Thottan <jthottan@xxxxxxxxxx> wrote:

Did u install rpm or directly from sources. Can u check whether following script is present?

/var/lib/glusterd/hooks/1/set/post/S32gluster_enable_shared_storage.sh

--

Jiffin

On 20/11/16 13:33, Alexandr Porunov wrote:

To enable shared storage I used next command:

# gluster volume set all cluster.enable-shared-storage enable

But it seems that it doesn't create gluster_shared_storage automatically.

# gluster volume status gluster_shared_storage

Volume gluster_shared_storage does not exist

Do I need to manually create a volume "gluster_shared_storage"? Do I need to manually create a folder "/var/run/gluster/shared_storage"? Do I need to manually mount it? Or something I don't need to do?

If I use 6 cluster nodes and I need to have a shared storage on all of them then how to create a shared storage? 

It says that it have to be with replication 2 or replication 3. But if we use shared storage on all of 6 nodes then we have only 2 ways to create a volume:

1. Use replication 6

2. Use replication 3 with distribution.

Which way I need to use?

Sincerely,

Alexandr

On Sun, Nov 20, 2016 at 9:07 AM, Jiffin Tony Thottan <jthottan@xxxxxxxxxx> wrote:

On 19/11/16 21:47, Alexandr Porunov wrote:

Unfortunately I haven't this log file but I have 'run-gluster-shared_storage.log' and it has errors I don't know why.

Here is the content of the 'run-gluster-shared_storage.log':

Make sure shared storage is up and running using "gluster volume status  gluster_shared_storage"

May be the issue is related to firewalld or iptables. Try it after disabling them.

--

Jiffin

[2016-11-19 10:37:01.581737] I [MSGID: 100030] [glusterfsd.c:2454:main] 0-/usr/sbin/glusterfs: Started running /usr/sbin/glusterfs version 3.8.5 (args: /usr/sbin/glusterfs --volfile-server=127.0.0.1 --volfile-id=gluster_shared_storage /run/gluster/shared_storage)

[2016-11-19 10:37:01.641836] I [MSGID: 101190] [event-epoll.c:628:event_dispatch_epoll_worker] 0-epoll: Started thread with index 1

[2016-11-19 10:37:01.642311] E [glusterfsd-mgmt.c:1586:mgmt_getspec_cbk] 0-glusterfs: failed to get the 'volume file' from server

[2016-11-19 10:37:01.642340] E [glusterfsd-mgmt.c:1686:mgmt_getspec_cbk] 0-mgmt: failed to fetch volume file (key:gluster_shared_storage)

[2016-11-19 10:37:01.642592] W [glusterfsd.c:1327:cleanup_and_exit] (-->/lib64/libgfrpc.so.0(rpc_clnt_handle_reply+0x90) [0x7f95cd309770] -->/usr/sbin/glusterfs(mgmt_getspec_cbk+0x536) [0x7f95cda3afc6] -->/usr/sbin/glusterfs(cleanup_and_exit+0x6b) [0x7f95cda34b4b] ) 0-: received signum (0), shutting down

[2016-11-19 10:37:01.642638] I [fuse-bridge.c:5793:fini] 0-fuse: Unmounting '/run/gluster/shared_storage'.

[2016-11-19 10:37:18.798787] I [MSGID: 100030] [glusterfsd.c:2454:main] 0-/usr/sbin/glusterfs: Started running /usr/sbin/glusterfs version 3.8.5 (args: /usr/sbin/glusterfs --volfile-server=127.0.0.1 --volfile-id=gluster_shared_storage /run/gluster/shared_storage)

[2016-11-19 10:37:18.813011] I [MSGID: 101190] [event-epoll.c:628:event_dispatch_epoll_worker] 0-epoll: Started thread with index 1

[2016-11-19 10:37:18.813363] E [glusterfsd-mgmt.c:1586:mgmt_getspec_cbk] 0-glusterfs: failed to get the 'volume file' from server

[2016-11-19 10:37:18.813386] E [glusterfsd-mgmt.c:1686:mgmt_getspec_cbk] 0-mgmt: failed to fetch volume file (key:gluster_shared_storage)

[2016-11-19 10:37:18.813592] W [glusterfsd.c:1327:cleanup_and_exit] (-->/lib64/libgfrpc.so.0(rpc_clnt_handle_reply+0x90) [0x7f96ba4c7770] -->/usr/sbin/glusterfs(mgmt_getspec_cbk+0x536) [0x7f96babf8fc6] -->/usr/sbin/glusterfs(cleanup_and_exit+0x6b) [0x7f96babf2b4b] ) 0-: received signum (0), shutting down                                                                                              

[2016-11-19 10:37:18.813633] I [fuse-bridge.c:5793:fini] 0-fuse: Unmounting '/run/gluster/shared_storage'.                           

[2016-11-19 10:40:33.115685] I [MSGID: 100030] [glusterfsd.c:2454:main] 0-/usr/sbin/glusterfs: Started running /usr/sbin/glusterfs version 3.8.5 (args: /usr/sbin/glusterfs --volfile-server=127.0.0.1 --volfile-id=gluster_shared_storage /run/gluster/shared_storage)   

[2016-11-19 10:40:33.124218] I [MSGID: 101190] [event-epoll.c:628:event_dispatch_epoll_worker] 0-epoll: Started thread with index 1  

[2016-11-19 10:40:33.124722] E [glusterfsd-mgmt.c:1586:mgmt_getspec_cbk] 0-glusterfs: failed to get the 'volume file' from server    

[2016-11-19 10:40:33.124738] E [glusterfsd-mgmt.c:1686:mgmt_getspec_cbk] 0-mgmt: failed to fetch volume file (key:gluster_shared_storage)                                                                                                                                 

[2016-11-19 10:40:33.124869] W [glusterfsd.c:1327:cleanup_and_exit] (-->/lib64/libgfrpc.so.0(rpc_clnt_handle_reply+0x90) [0x7f23576a9770] -->/usr/sbin/glusterfs(mgmt_getspec_cbk+0x536) [0x7f2357ddafc6] -->/usr/sbin/glusterfs(cleanup_and_exit+0x6b) [0x7f2357dd4b4b] ) 0-: received signum (0), shutting down                                                                                              

[2016-11-19 10:40:33.124896] I [fuse-bridge.c:5793:fini] 0-fuse: Unmounting '/run/gluster/shared_storage'.                           

[2016-11-19 10:44:36.029838] I [MSGID: 100030] [glusterfsd.c:2454:main] 0-/usr/sbin/glusterfs: Started running /usr/sbin/glusterfs version 3.8.5 (args: /usr/sbin/glusterfs --volfile-server=127.0.0.1 --volfile-id=gluster_shared_storage /run/gluster/shared_storage)   

[2016-11-19 10:44:36.043705] I [MSGID: 101190] [event-epoll.c:628:event_dispatch_epoll_worker] 0-epoll: Started thread with index 1  

[2016-11-19 10:44:36.044082] E [glusterfsd-mgmt.c:1586:mgmt_getspec_cbk] 0-glusterfs: failed to get the 'volume file' from server    

[2016-11-19 10:44:36.044106] E [glusterfsd-mgmt.c:1686:mgmt_getspec_cbk] 0-mgmt: failed to fetch volume file (key:gluster_shared_storage)                                                                                                                                 

[2016-11-19 10:44:36.044302] W [glusterfsd.c:1327:cleanup_and_exit] (-->/lib64/libgfrpc.so.0(rpc_clnt_handle_reply+0x90) [0x7fbd9dced770] -->/usr/sbin/glusterfs(mgmt_getspec_cbk+0x536) [0x7fbd9e41efc6] -->/usr/sbin/glusterfs(cleanup_and_exit+0x6b) [0x7fbd9e418b4b] ) 0-: received signum (0), shutting down                                                                                              

[2016-11-19 10:44:36.044356] I [fuse-bridge.c:5793:fini] 0-fuse: Unmounting '/run/gluster/shared_storage'. 

Can you help me to figure out what I am doing wrong?

Sincerely,

Alexandr

On Sat, Nov 19, 2016 at 3:18 PM, Saravanakumar Arumugam <sarumuga@xxxxxxxxxx> wrote:

On 11/19/2016 04:13 PM, Alexandr Porunov wrote:

It still doesn't work..

I have created that dir:

# mkdir -p /var/run/gluster/shared_storage

and then:

# mount -t glusterfs 127.0.0.1:gluster_shared_storage /var/run/gluster/shared_storage

Mount failed. Please check the log file for more details.

Where to find a proper file to read logs? Because "/var/log/glusterfs/" has a lot of log files.

You can  find mount logs like this :  "directory_mounted".log inside /var/log/glusterfs
There is some issue in your setup...check this log and share it here.

Sincerely,

Alexandr

On Sat, Nov 19, 2016 at 11:16 AM, Saravanakumar Arumugam <sarumuga@xxxxxxxxxx> wrote:

On 11/19/2016 01:39 AM, Alexandr Porunov wrote:

Hello,

I try to enable shared storage for Geo-Replication but I am not sure that I do it properly.

Here is what I do:
# gluster volume set all cluster.enable-shared-storage enable
volume set: success

# mount -t glusterfs 127.0.0.1:gluster_shared_storage /var/run/gluster/shared_storage
ERROR: Mount point does not exist
Please specify a mount point
Usage:
man 8 /sbin/mount.glusterfs

This error means /var/run/gluster/shared_storage directory does NOT exists.

But, running the  command (gluster volume set all cluster.enable-shared-storage enable)
should carry out the mounting automatically. (so, there is no need to manually mount).

Check after running "gluster volume set all cluster.enable-shared-storage enable"
    1. gluster volume info
     2. glusterfs process started with volfile-id as gluster_shared_storage.

Thanks,
Saravana

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