Hello, getting DRBD to work with MySQL was not problem. However prior to adding heartbeat I want to get a fix on the 2 problems below:
Debian Lenny/LVM DRBD 8.0.14 (1) State change error: Trying to set active node to passive and vice-versa # drbdadm secondary mainvol /dev/drbd0: State change failed: (-12) Device is held open by someone Command 'drbdsetup /dev/drbd0 secondary' terminated with exit code 11 # drbdadm down all /dev/drbd0: State change failed: (-12) Device is held open by someone Command 'drbdsetup /dev/drbd0 down' terminated with exit code 11 drbdsetup exited with code 11 picked up from a forum: # vgchange -an Can't deactivate volume group "vg0" with 7 open logical volume(s) I could literally tear the connection by severing the link between the nodes and then set the active node, but there must be a smoother way. (2) After reboot the DRBD volumes on the primary are offline/not-mounted/locked by DRBD. Setting them primary resolves it and allows a mount -a to mount them all. Is this the default behavior without heartbeat ?? thanks - ies
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