VERITAS Volume Manager 4.1 Release Notes (5900-0591, March 2010)

VERITAS Volume Manager 4.1 Release Notes

Known Problems and Workarounds

Chapter 1 37

Workaround: No action is required. This behavior is normal and is not the result of an error

condition.

File System Check of a Snapshot

Normally, a file system would have no work to do when a snapshot is taken. However, if an

SFCFS file system is not mounted, it is likely that the fsck of the snapshot will take longer

than is usually necessary, depending on the I/O activity at the time of the snapshot.

Workaround: When taking a snapshot of an SFCFS file system, you should ensure that at

least one of the volumes defined in the command line is mounted on the cluster master.

Mount Operation Can Cause Inconsistencies in Snapshots

Inconsistencies can arise in point-in-time copies if any of the following snapshot operations

are performed on a volume while a file system in the volume is being mounted: vxassist

snapshot, vxplex snapshot, vxsnap make, vxsnap refresh, or vxsnap restore.

Intelligent Storage Provisioning Issues

To create application volumes successfully, the appropriate licenses must be present on your

system. For example, you need a full VERITAS Volume Manager and a VERITAS FlashSnap

license to use the instant snapshot feature. Vendors of disk arrays may also provide

capabilities that require special licenses for certain features of their hardware.

Miscellaneous Issues

Auto-import of Disk Groups

If a disk that failed while a disk group was imported returns to life after the group has been

deported, the disk group is auto-imported the next time the system boots. This contradicts the

normal rule that only disk groups that are (non-temporarily) imported at the time of a crash

are auto-imported.

If it is important that a disk group not be auto-imported when the system is rebooted, the disk

group should be imported temporarily when the intention is to deport the disk group (for

example, in HA configurations). Use the -t flag to vxdg import