If you use ServiceGuard and PV links in an HP 9000 or HP
Integrity clustering environment, the package startup time can take
from 20 to 60 minutes when you use the vgchange -a e VolumeGroupName command
to start a package that contains a degraded virtual disk (VDisk).
Note: If you have a degraded VDisk but all of the associated
nodes and MDisks are online, call the IBM® Support
Center for
assistance.
To avoid a lengthy startup time, you can perform
the following actions:
- Do not start packages on an HP 9000 or HP Integrity cluster while
upgrading the SAN Volume Controller cluster.
- Configure your HP 9000 or HP Integrity cluster so that each node
is running a package that contains a VDisk from each I/O group. This
allows any automatic failover and failback to complete within a reasonable
amount of time.
Note: The lengthy startup time does not occur under the following
circumstances:
- If the host already has an active volume group containing a degraded
VDisk from the same I/O group.
- If the host started while the VDisk was degraded.