VERITAS Volume Manager 3.5 Release Notes (August 2002)

Chapter 1

VERITAS Volume Manager™ Release Notes

Patches and Fixes in This Version

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.

VxVM 3.5 Does not Support DMP Disabling The disabling of DMP is not supported in VxVM 3.2 and

VxVM 3.5. The utilities that existed prior to VxVM 3.2 to disable DMP (vxdmpdis) and enable DMP (vxdmpen)

are no longer provided.

Removing DMP Disks

• Problem: The vxdisk rm command only logically removes a disk. It does not remove the disk from DMP.

Therefore, the disk may re-appear after a vxdctl enable even if the disk has been physically removed.

• Workaround: Restart usingvxconfigd. This causes the DMP database to be updated, and the physically

removed device will no longer appear.

Miscellaneous Issues

Rootability Cloning Script May Yield "Too Many Processes" Error

• Problem: Running the VxVM rootability cloning script, vxcp_lvmro, may yield the following error

message if your nproc tunable is set to the default of 276:

/etc/vx/bin/vxcp_lvmroot[47]: The fork function failed. Too many already exist.

sh: The fork function failed. Too many processes already exist.

• Workaround: Increase the nproc static tunable to 1024 using sam(1M), rebuild a new kernel, reboot your

machine, and try the vxcp_lvmroot again.

Slow Disk Group Import for FC60

• 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_26519, ﬁxes this problem. The ﬁx is included in the “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.)

Long Delay Time when Running vxconﬁgd

• Problem: You may experience a long (20 seconds) delay time when running vxconﬁgd without a CD-ROM

in the CD/DVD drive.

• Workaround: Ensure there is a CD in the CD-ROM drive.

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