VERITAS Volume Manager 3.2 for HP-UX Release Notes

Known Problems and Workarounds

Chapter 122

Known Problems and Workarounds

Slow Disk Group Import for FC60 (JAGad46688)

• Problem: Importing a disk group made up of LUNs of an FC60 disk array is slow, requiring

as much as 90 seconds to complete. Subsequent I/O operations, however, are normal with

the FC60.

• Fix: A SCSI patch, PHKL_25509, fixes this problem. The fix will be included on a

forthcoming “11.11 SCSI IO Subsystem Cumulative Patch.” See “Patches and Fixes in This

Version” for instructions on finding the latest patches. Use SCSI or the CR number

JAGad46688 as the search string. (JAGad46688 is the change request number for the SCSI

problem that this patch fixes.)

Business Copy (BC) Limitation on XP Disk Arrays

• Problem: VxVM will allow an import of the volumes from only one BCV on a node where

volumes have the same disk and group identification. If the Primary (P-Vol) is accessible,

then this volume will be used. The Secondary (S-Vol) is only imported if the P-Vol is

inaccessible at the time of import. There is currently no ability to change the disk group

identification (group id) on XP BC volumes.

• Workaround: None

VxVM DMP Lists Disabled Paths That Have Been Reused

• Problem: When one of multiple paths or cables to a disk array is disconnected, fails, or is

swapped with another path, and then that same path or cable is reconnected or replaced, it

is possible that HP-UX will recognize the recovered path as a new path, not as the same

path that has simply recovered. In this case, DMP will list twice as many paths: the “new”

ones in the ENABLED state and the “old” ones (that is, from before the paths were swapped,

removed or replaced) in the DISABLED state. I/O continues to be routed correctly.

• Workaround: None necessary. VxVM DMP will not automatically clean up the paths that

are no longer in use, or that are in the DISABLED state. When the host is rebooted, the

DMP database will be rebuilt without the DISABLED path definitions.