[node-devel] GlusterFS on oVirt node

Thu Oct 24 17:59:03 UTC 2013

I reinstalled node and remounter / rw then I checked fs before 
activating host (in oVirt Engine) and after (which files have been 
changed)... The "ro" problem seems to be in /var/lib/glusterd/. Is there 
any way I can change node so this directory would be mounted rw? And to 
persist this setting after reboot.

tnx

Dne 24. 10. 2013 15:28, piše Fabian Deutsch:
> Am Donnerstag, den 24.10.2013, 15:12 +0200 schrieb Saša Friedrich:
>> Progress report:
>>
>> I remounted fs on oVirt nodes rw, started glusterd with no errors.
>> Then I activated hosts in oVirt Engine. Also no errors! Yei!
> Yey! :)
> Yes, mount -oremount,rw make's the FS temporarily writeable. But you
> will have issues as soon as you reboot.
> We'll need to investigate which paths need to be persisted (so the data
> written to them survives a reboot) and which only need to be write-able
> e.g. for temporary data.
>
> Would you mind opening a bug for this?
>
> Greetings
> fabian
>
>> Then I created volume (replication), added two bricks (oVirt nodes),
>> and started volume. Seems fine. I checkd on node1:
>>
>> # gluster volume info
>>   
>> Volume Name: data_vol
>> Type: Replicate
>> Volume ID: a1cdc762-2198-47e2-9b4a-58fd0571b269
>> Status: Started
>> Number of Bricks: 1 x 2 = 2
>> Transport-type: tcp
>> Bricks:
>> Brick1: 192.168.254.124:/data/gluster
>> Brick2: 192.168.254.141:/data/gluster
>> Options Reconfigured:
>> storage.owner-gid: 36
>> storage.owner-uid: 36
>> auth.allow: *
>> user.cifs: on
>> nfs.disable: off
>>
>>
>>
>> WORKING!
>>
>>
>> BUT...  Now i can not create storage domain. When I hit OK button on
>> "New storage domain dialog", process is running very long. Eventually
>> this process stops and returns " Error while executing action Add
>> Storage Connection: Network error during communication with the
>> Host".
>>
>> I'm stuck again :-(     in need for HELP!
> Could you please provide the logfiles mentioned here:
> http://www.ovirt.org/Node_Troubleshooting#Log_Files
>
> Greetings
> fabian
>
>> tnx
>>
>>
>>
>>
>> Dne 24. 10. 2013 13:02, piše Mike Burns:
>>
>>> Adding to node-devel list and users list.
>>>
>>> -- Mike
>>>
>>> Apologies for top posting and typos.  This was sent from a mobile device.
>>>
>>> Saša Friedrich <sasa.friedrich at bitlab.si> wrote:
>>>
>>> Hello!
>>>
>>> Acording to http://www.ovirt.org/Node_Glusterfs_Support glusterfs on
>>> ovirt node should be supported. But I have some difficulties to
>>> implement it.
>>>
>>>
>>> I installed ovirt (nested kvm - home testing) following "Up and Running
>>> with oVirt 3.3) using Fedora19
>>> Install went well. Everything is working fine.
>>>
>>> Now I created two hosts (nested kvm - ovirt node fc19 - just for
>>> testing) and added them in oVirt.
>>> Super fine - working!
>>>
>>> Now I'd like to use this hosts as glustefs nodes too. Acording to google
>>> (I'm googling for two days now) I'ts possible, but I can not find any
>>> usable how-to
>>>
>>> 1. I removed these two hosts from default data center
>>> 2. I created new data center (type: GlusterFS)
>>> 3. I created new cluster (Enable Gluster Service checked)
>>> 4. I added host
>>> 5. Now I get error message in events: "Could not find gluster uuid of
>>> server host1 on Cluster Cluster1."
>>>
>>>
>>> If I ssh to my host (fc19 node) glusterd.service is not running. If I
>>> try to run it It returns error
>>>
>>> here is the log:
>>> [2013-10-24 09:52:25.969899] I [glusterfsd.c:1910:main]
>>> 0-/usr/sbin/glusterd: Started running /usr/sbin/glusterd version 3.4.0
>>> (/usr/sbin/glusterd -p /run/glusterd.pid)
>>> [2013-10-24 09:52:25.974480] I [glusterd.c:962:init] 0-management: Using
>>> /var/lib/glusterd as working directory
>>> [2013-10-24 09:52:25.977648] I [socket.c:3480:socket_init]
>>> 0-socket.management: SSL support is NOT enabled
>>> [2013-10-24 09:52:25.977694] I [socket.c:3495:socket_init]
>>> 0-socket.management: using system polling thread
>>> [2013-10-24 09:52:25.978611] W [rdma.c:4197:__gf_rdma_ctx_create]
>>> 0-rpc-transport/rdma: rdma_cm event channel creation failed (No such device)
>>> [2013-10-24 09:52:25.978651] E [rdma.c:4485:init] 0-rdma.management:
>>> Failed to initialize IB Device
>>> [2013-10-24 09:52:25.978667] E [rpc-transport.c:320:rpc_transport_load]
>>> 0-rpc-transport: 'rdma' initialization failed
>>> [2013-10-24 09:52:25.978747] W [rpcsvc.c:1387:rpcsvc_transport_create]
>>> 0-rpc-service: cannot create listener, initing the transport failed
>>> [2013-10-24 09:52:25.979890] I
>>> [glusterd.c:354:glusterd_check_gsync_present] 0-glusterd:
>>> geo-replication module not installed in the system
>>> [2013-10-24 09:52:25.980000] E [store.c:394:gf_store_handle_retrieve]
>>> 0-: Unable to retrieve store handle /var/lib/glusterd/glusterd.info,
>>> error: No such file or directory
>>> [2013-10-24 09:52:25.980026] E
>>> [glusterd-store.c:1277:glusterd_retrieve_op_version] 0-: Unable to get
>>> store handle!
>>> [2013-10-24 09:52:25.980048] E [store.c:394:gf_store_handle_retrieve]
>>> 0-: Unable to retrieve store handle /var/lib/glusterd/glusterd.info,
>>> error: No such file or directory
>>> [2013-10-24 09:52:25.980060] E
>>> [glusterd-store.c:1378:glusterd_retrieve_uuid] 0-: Unable to get store
>>> handle!
>>> [2013-10-24 09:52:25.980074] I
>>> [glusterd-store.c:1348:glusterd_restore_op_version] 0-management:
>>> Detected new install. Setting op-version to maximum : 2
>>> [2013-10-24 09:52:25.980309] E [store.c:360:gf_store_handle_new] 0-:
>>> Failed to open file: /var/lib/glusterd/options, error: Read-only file system
>>>
>>>
>>> Acording to log /var/lib/glusterd/glusterd.info is missing and can not
>>> be created because fs is mounted "ro".
>>>
>>>
>>> Now I'm stuck!
>>> What am I missing?
>>>
>>>
>>> tnx for help!
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