HP StorageWorks Replication Solutions Manager V1.1 Release Notes (T3687-96026, June 2005)

The HP-UX kernel recognizes device drivers and peripheral d evices by major and minor numbers. The
driver uses minor numbers to locate specific devices. HP-UX sometimes does not release device minor
numbers after a volume group is removed. When the CreateHostVolume command is run, the volume
group appears to still be active and the comma nd fails.
Reboot the host to resolve this issue.
IMPORTANT: Before proceeding, coordinate the reboot activities to avoid disruption of host services to
others.
1. Ensure that no replication manager jobs involving the host are running or scheduled to run
during the reboot.
2. Close applications on the host, as appropriate.
3. Reboot the host. This clears the device minor numbers for the host memor y.
4. Restart applications on the host, as appropriate.
5. Rerun the replication manager job.
Host agent d
iscovery hangs and times out
If a device on an enabled host is in a failed state, the discovery of host volumes on that host can hang
and cause the discovery to time out. This can happen on HP-UX 11.23 and 11.11.
This issue is caused by the OS. Failed devices on the enabled host must be removed or corrected.
Job with MountEntireVolumeGroup command fails
A job that replicates and mounts a volume group fails at a MountEntireVolumeGroup command
when at tempting to mount the volume group on an HP-UX enabled host. The replication manager logs a
message su
ch as Host Volume has unknown or incompatible ….
This can occur when a job is run repeatedly. If the replication manager discovers a volume group at the
same time
that a job com m and is attempting to remove the volume group, an error allows the underlying
storage t
o be unpresented from the host, even though the volume group is still a ctive.
When the job is run again, the volume group cannot be replicated and the job fails at the mo unt step
because
there is no underlying storage available.
InstallinghostagentonanHP-UX11.11operatingsystem
The Owner ID and Group ID do not display properly when m ou nting the replication m ana ger host
agent CD on an HP-UX 11 .11 operating system.
Install the following patches for HP-UX 11.11.
PHCO_25841
PHKL_26269
PHKL_32035
After installing the required HP-UX patches, use the following com mand to mount the replication
manager host agent CD on your HP-UX 11.11 host: mount —f cdfs —orr /dev/dsk/cxtydz
/mountpoint.
The Owner ID and Group ID display properly.
12