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 at 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: > > > > 1) having two storage server replicating partition with DRBD > > 2) exporting via GNBD from the primary server the drbd with GFS2 > > 3) 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 at centos.org > > http://lists.centos.org/mailman/listinfo/centos > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20100414/1c092507/attachment-0003.html>