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
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