[DRBD-user] Replication data from primary server

Faria digolinopage at yahoo.com.br
Mon Aug 25 16:04:13 CEST 2008

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

Hello Leroy,

The mirror is ok.

# Creating in directory in /home
root at ubuntu-cluster2:~# mount /dev/drbd0 /home/
root at ubuntu-cluster2:~# cd /home/
root at ubuntu-cluster2:/home# mkdir guest

# Now ubuntu-cluster2 is secondary
root at ubuntu-cluster2:~# umount /home/
root at ubuntu-cluster2:~# 
root at ubuntu-cluster2:~# drbdadm secondary all

#Now ubuntu-cluster1 is primary
root at ubuntu-cluster1:~# drbdadm primary all
root at ubuntu-cluster1:~# mount /dev/drbd0 /home/

#Reading /home
root at ubuntu-cluster1:~# ls /home/
faria  guest  lost+found

Ser the logs:

heartbeat: 2008/08/22_16:45:51 WARN: node ubuntu-cluster2: is dead
heartbeat: 2008/08/22_16:45:51 WARN: No STONITH device configured.
heartbeat: 2008/08/22_16:45:51 WARN: Shared disks are not protected.
heartbeat: 2008/08/22_16:45:51 info: Resources being acquired from ubuntu-cluster2.
heartbeat: 2008/08/22_16:45:51 info: Link ubuntu-cluster2:eth0 dead.
heartbeat: 2008/08/22_16:45:51 info: Running /etc/ha.d/rc.d/status status
heartbeat: 2008/08/22_16:45:51 info: No local resources [/usr/lib/heartbeat/ResourceManager listkeys ubuntu-cluster1] to acquire.
heartbeat: 2008/08/22_16:45:51 info: Taking over resource group IPaddr::
heartbeat: 2008/08/22_16:45:51 info: Acquiring resource group: ubuntu-cluster2 IPaddr::
heartbeat: 2008/08/22_16:45:52 info: Running /etc/ha.d/resource.d/IPaddr start
heartbeat: 2008/08/22_16:45:52 info: /sbin/ifconfig eth0:0:0  netmask	broadcast
heartbeat: 2008/08/22_16:45:52 info: Sending Gratuitous Arp for on eth0:0:0 [eth0]
heartbeat: 2008/08/22_16:45:52 /usr/lib/heartbeat/send_arp -i 1010 -r 5 -p /var/lib/heartbeat/rsctmp/send_arp/send_arp- eth0 auto ffffffffffff
heartbeat: 2008/08/22_16:45:52 info: Taking over resource group drbddisk::r0
heartbeat: 2008/08/22_16:45:52 info: Acquiring resource group: ubuntu-cluster2 drbddisk::r0 Filesystem::/dev/drbd0::/home::ext3 samba
heartbeat: 2008/08/22_16:45:52 info: Running /etc/ha.d/resource.d/drbddisk r0 start
heartbeat: 2008/08/22_16:46:04 ERROR: Return code 1 from /etc/ha.d/resource.d/drbddisk
heartbeat: 2008/08/22_16:46:04 CRIT: Giving up resources due to failure of drbddisk::r0
heartbeat: 2008/08/22_16:46:04 info: Releasing resource group: ubuntu-cluster2 drbddisk::r0 Filesystem::/dev/drbd0::/home::ext3 samba
heartbeat: 2008/08/22_16:46:04 info: Running /etc/init.d/samba  stop
heartbeat: 2008/08/22_16:46:06 info: Running /etc/ha.d/resource.d/IPaddr stop
heartbeat: 2008/08/22_16:46:06 info: /sbin/route -n del -host
heartbeat: 2008/08/22_16:46:06 info: /sbin/ifconfig eth0:0:0 down
heartbeat: 2008/08/22_16:46:06 info: IP Address released
heartbeat: 2008/08/22_16:46:06 info: Running /etc/ha.d/resource.d/Filesystem /dev/drbd0 /home ext3 stop
heartbeat: 2008/08/22_16:46:06 WARNING: Filesystem /home not mounted?
heartbeat: 2008/08/22_16:46:06 info: Running /etc/ha.d/resource.d/drbddisk r0 stop
heartbeat: 2008/08/22_16:46:06 info: /usr/lib/heartbeat/mach_down: nice_failback: foreign resources acquired
heartbeat: 2008/08/22_16:46:06 info: mach_down takeover complete.

Coud be anything with heartbeat ?



--- Em sex, 22/8/08, Leroy van Logchem <leroy.vanlogchem at gmail.com> escreveu:

> De: Leroy van Logchem <leroy.vanlogchem at gmail.com>
> Assunto: Re: [DRBD-user] Replication data from primary server
> Para: drbd-user at lists.linbit.com
> Data: Sexta-feira, 22 de Agosto de 2008, 7:10
> > The heartbeat is mounting /dev/drbd0 in secondary
> server, but when primary server is up, the datas created in
> secondary server aren't copied to primary server.
> >
> > Is there a solution from this ?
> >   
> When not aiming for a primary-primary cluster, in other
> words only
> one side of the cluster is primary and can read/write to
> the file system,:
> you should not mount the drbd device on the secondary while
> the primary
> has it in-use. When these are your first steps with drbd, I
> would advise to
> take it step by step without heartbeat. Test the basics
> first.
> Have the primary connect to the secondary, monitor the
> traffic, disk I/O
> lights etc (verify the replication is working).
> # watch -n 1 "cat /proc/drbd"
> # iostat -dk 1 on both servers
> Stop activity on the mount point, unmount it. Make the
> primary, secondary.
> On the new primary, make it primary. Mount it there and
> verify the last
> written files are there. Take it from there to your
> clustering software.
> -- 
> Leroy
> _______________________________________________
> drbd-user mailing list
> drbd-user at lists.linbit.com
> http://lists.linbit.com/mailman/listinfo/drbd-user

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