I am getting this errors when running the command "drbdadm adjust mysql" on WAHOO:
Failure: (114) Lower device is already claimed. This usually means it is mounted.
Command 'drbdsetup /dev/drbd0 disk /dev/sda2 /dev/sda2 internal --set-defaults --create-device --on-io-error=detach' terminated with exit code 10

And on my second node WAHOO2, I get:
No response from the DRBD driver! Is the module loaded?
Command 'drbdsetup /dev/drbd0 disk /dev/sda2 /dev/sda2 internal --set-defaults --create-device --on-io-error=detach' terminated with exit code 20


This is what my /etc/drbd.conf file looks like:
resource mysql
{
protocol C;

# incon-degr-cmd "echo '!DRBD! pri on incon-degr' | wall ; sleep 60 ; halt -f";

startup { wfc-timeout 0; degr-wfc-timeout 120; }
disk { on-io-error detach; } # or panic, ...
syncer {
  rate 6M;
}

on wahoo {
  device /dev/drbd0;
  disk /dev/sda2;
  address 10.100.1.170:7789;
  meta-disk internal;
}

on wahoo2 {
  device /dev/drbd0;
  disk /dev/sda2;
  address 10.100.1.171:7789;
  meta-disk internal;
}
}
-------------------------

Any ideas?

thanks,

rotseN

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