Veritas Storage Foundation 5.1 SP1 Advanced Features Administrator"s Guide (5900-1503, April 2011)

# vxdisk -f flush disk_access_name
This command rewrites all labels if there exists a valid VxVM ID block that
points to a valid private region. The -f option is required to rewrite sectors 7
and 16 when a disk is taken offline due to label corruption (possibly by a
Windows system on the same fabric).
Disk group tasks
The following disk group tasks are supported:
■ Changing the alignment of a disk group during disk encapsulation
■ Changing the alignment of a non-CDS disk group
■ Determining the setting of the CDS attribute on a disk group
■ Splitting a CDS disk group
■ Moving objects between CDS disk groups and non-CDS disk groups
■ Moving objects between CDS disk groups
■ Joining disk groups
■ Changing the default CDS setting for disk group creation
■ Creating non-CDS disk groups
■ Upgrading an older version non-CDS disk group
■ Replacing a disk in a CDS disk group
■ Setting the maximum number of devices for CDS disk groups
Changing the alignment of a disk group during disk
encapsulation
If you use the vxdiskadm command to encapsulate a disk into a disk group with
an alignment of 8K, the disk group alignment must be reduced to 1.
If you use the vxencap command to perform the encapsulation, the alignment is
carried out automatically without a confirmation prompt.
To change the alignment of a disk group during disk encapsulation
■ Run the vxdiskadm command, and select the “Add or initialize one or
more disks” item from the main menu. As part of the encapsulation process,
you are asked to confirm that a reduction of the disk group alignment from
8K to 1 is acceptable.
475Migrating data between platforms
Maintaining your system