Re: [CentOS] drbd

On 12/10/14 02:52 PM, John R Pierce wrote:

On 10/12/2014 9:30 AM, Digimer wrote:

...

I can't speak to backuppc, but I am curious how you're managing the resources. Are you using cman + rgmanager or pacemaker?

strictly manually, with drbdadm and such. if the primary backup server ever fails, I'll bring up the backup by hand.

OK. So what's your start-up procedure? How should things start automatically then and where exactly is backuppc hanging up? Is it trying to start before DRBD is Primary?

On 10/12/2014 9:31 AM, Digimer wrote:

...

What version of DRBD? If you're using a cluster resource manager, which and what version? How is DRBD configured and, if you are using a resource manager, what is it's config?

its the drbd8.3 package from elrepo.

So 8.3.16?

/etc/drbd.d/global_common.conf:

global { usage-count no; }

common {
         syncer { rate 200M; }
}

Is this a 10 Gbps + very fast storage setup? If not, that is probably *way* too high.

/etc/drbd.d/main.res:

resource main {

protocol C;
startup { wfc-timeout 0; degr-wfc-timeout 120; }
disk { on-io-error detach; }

syncer { verify-alg crc32c; }

on sg1.domain.com {
         device /dev/drbd0;
         disk /dev/vg_sg1data/lvdata;
         meta-disk internal;
         address 10.5.160.70:7788;
         }

on sg2.domain.com {
         device /dev/drbd0;
         disk /dev/vg_sg2data/lvcopy;
         meta-disk internal;
         address 10.5.160.71:7788;
         }

}

What does 'drbdadm dump' show? That will give a better idea of the actual setup. I'm interested specifically in the start parameters (ie: become-primary-on, etc).