[DRBD-user] Performance Issues after Upgrade

James W. Brinkerhoff jwb at paravolve.net
Wed Jun 23 20:59:30 CEST 2004


I upgraded to drbd 0.6.12 and it seems my performance has dropped like a 
stone.    System load runs very high (5.0 or above) and IO operations block 
often.

I have 2 machines connected via copper gig /w a crossover.  Same config as 
before the upgrade.    

If anyone can help, I'd greatly appreciate it...   Kernel messages and 
drbd.conf are below.

-jwb

I get these kernel messages over and over:

drbd0: [kjournald/1313] sock_sendmsg time expired, ko = 4294967295
drbd0: [kupdated/7] sock_sendmsg time expired, ko = 4294967295
drbd0: [kupdated/7] sock_sendmsg time expired, ko = 4294967294
drbd0: [kupdated/7] sock_sendmsg time expired, ko = 4294967295
drbd0: [kupdated/7] sock_sendmsg time expired, ko = 4294967295
drbd0: [kupdated/7] sock_sendmsg time expired, ko = 4294967295
drbd0: [kupdated/7] sock_sendmsg time expired, ko = 4294967294
drbd0: [kjournald/1313] sock_sendmsg time expired, ko = 4294967295
drbd0: [kupdated/7] sock_sendmsg time expired, ko = 4294967295
drbd0: [kjournald/1313] sock_sendmsg time expired, ko = 4294967295
drbd0: [kupdated/7] sock_sendmsg time expired, ko = 4294967295
drbd0: [kupdated/7] sock_sendmsg time expired, ko = 4294967295
drbd0: [kupdated/7] sock_sendmsg time expired, ko = 4294967295
drbd0: [kjournald/1313] sock_sendmsg time expired, ko = 4294967295
drbd0: [kjournald/1313] sock_sendmsg time expired, ko = 4294967294
drbd0: [kjournald/1313] sock_sendmsg time expired, ko = 4294967295
drbd0: [kupdated/7] sock_sendmsg time expired, ko = 4294967295
drbd0: [kjournald/1313] sock_sendmsg time expired, ko = 4294967295
drbd0: [kupdated/7] sock_sendmsg time expired, ko = 4294967295
drbd0: [kjournald/1313] sock_sendmsg time expired, ko = 4294967295

My drbd.conf currently looks like this:

resource msys {
        protocol=C
        fsckcmd=/bin/true
        inittimeout=-15
        load-only

        disk {
                disk-size = 312576672k
        }

        net {
                tl-size          = 8000
                sync-min   = 50M   
                sync-max   = 100M
        }

        on emgen01 {
                device = /dev/nbd/0
                disk = /dev/sda1
                address=192.168.1.2
                port=7789
        }

        on emgen02 {
                device=/dev/nbd/0
                disk=/dev/sda1
                address=192.168.1.3
                port=7789
        }
}



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