Thanks Juergen for your response. I did not post till now because i've been fighting with all cluster stuff ! :D
I mean GFS2. DRBD, mysql and heartbeat work fine in an active/passive configuration.
What really does not fit to my needs is the cluster stuff which i have to use only to be able to mount the GFS2 FS.
I really do not get why i cannot be left free to choose my configuration. So to mount a GFS2 FS i had to install the cluster groups, ok i did surrended to this.
Now when i switch from one to another mysql server it doesn't start the service because of fencing! Ok i do not need fencing, but ok, i tought because it needs it i will set up a xen fence, no i can't beacause the dom0 have to be cluster members and i do not need aand want cluster stuff for dom0...
So i'm escalating problems because i cannot mount a GFS2 FS without all the cluster stuff. I will need to modifice sbin and to write script by myself to use fence_ack_manual, ok it is not suggested but i'm assuming the risk for that.
So if someone have been able to set up a GFS2 mount without Cluster stuff (cman) i will be happy to listen to!
For now i can tell great DRBD and GFS2: two great peace of software.
Cheers Raffaele
2010/3/29 Juergen Gotteswinter jg@internetx.de
Hi,
yes, you need to go with the Cluster Stuff...
Regarding your Setup, i got the best experience with drbd + gfs + iscsi export. GNBD was not as Stable than i expected. Overall Performance was even worse, too compared with iSCSI.
Greetings
Juergen
On 03/27/2010 05:39 PM, Raffaele Camarda wrote:
Hi all,
Where i want to arrive:
- having two storage server replicating partition with DRBD
- exporting via GNBD from the primary server the drbd with GFS2
- inporting the GNBD on some nodes and mount it with GFS2
Assuming no logical error are done in the last points logic this is the situation:
Server 1: LogVol09, DRDB configured as /dev/drbd0 replicated to Server 2. DRBD seems to work perfect as cat /proc/drbd Server 2: LogVol09, Secondary for /dev/drbd, cat /proc/drbd is ok
What i thought to do was to export via GNBD the /dev/drbd0 to import it
on a
couple of nodes. Using GFS2 as FS for concurrent usage.
I got to format the GFS2 FS on the Server 1 drbd0 device. But was unable
to
mount it because gfs_controld wasn't accepting connections, i discovered that cman manage gfs_controld. In any case i started it manually and discover that it try to use ccsd daemon which i have not installed.
Ok, i do not need to mount it locally so i started configuring GNBD,
started
manualli the server end stated the export command...again the cman/ccsd problem:
gnbd_clusterd: ERROR cannot join cman
Now, what i'm asking: am i forced to use all the cluster stuff cman, ccsd...fence...with this configuration? I would like only to use the
tools i
need: DRDB, GNBD and GFS2 without cluster facilities.
Thanks Raffaele
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos