I had an issue with my Sun Cluster 3.2, for some reason only one node /global/.devices was mounted at the same time, because of that I couldn't switch the resources between nodes (the switch/remaster command hang) and in one node the cluster globaldevices service fail to start.
When the resources switch hang, there was no message in syslog, it just waited util it timedout and failed back the resource.
Also, when the server booted I could see this message:
mount: /dev/md/dsk/d6 is already mounted or /global/.devices/node@1 is busyThe problem was that both nodes had the same physical device name /dev/md/dsk/d6 for /global/.devices , here is how my vfstab on each node before the fix:
Trying to remount /global/.devices/node@1
mount: /dev/md/dsk/d6 is already mounted or /global/.devices/node@1 is busy
WARNING - Unable to mount one or more of the following filesystem(s):
If this is not repaired, global devices will be unavailable.
Run mount manually (mount filesystem...).
After the problems are corrected, please clear the
maintenance flag on globaldevices by running the
/usr/sbin/svcadm clear svc:/system/cluster/
/dev/md/dsk/d6 /dev/md/rdsk/d6 /global/.devices/node@1 ufs 2 no global
/dev/md/dsk/d6 /dev/md/rdsk/d6 /global/.devices/node@2 ufs 2 no global
To solve it all I had to do is rename the metadevice on both nodes using metarename and modify /etc/vfstab to include the new change:
metarename d6 d601
metarename d6 d602
after the change you can restart svc:/system/cluster/