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

For example, the disks may not have been connected to the system
either physically (not cabled) or logically (using FC zoning or LUN
masking) when the system was booted up, but they have subsequently
been connected without rebooting the system. This can happen when
bringing new storage on-line, or when adding an additional DMP path
to existing storage. On the target system, both the operating system
and VxVM must be informed of the existence of the new storage. Issue
the appropriate command to tell the operating system to look for the
storage. (On Linux, depending on the supported capabilities of the
host adapter, you may need to reboot the target system to achieve
this.) Having done this, run either of the following commands on the
target system to have VxVM recognize the storage:
# vxdctl enable
# vxdisk scandisks
Does the target
system know
about the disks?
Both the Solaris and Linux operating systems maintain information
about partitions or slices on disks. If you repartition a disk after the
target system was booted, use the appropriate command to instruct
the operating system to rescan the disk’s TOC or partition table. For
example, on a target Linux system, use the following command:
# blockdev --rereadpt
Having done this, run either of the following commands on the target
system to have VxVM recognize the storage:
# vxdctl enable
# vxdisk scandisks
Do the disks
contain partitions
or slices?
For example, if you use the vxdisksetup -i command to format a
disk for VxVM on one system, the vxdisk list command on the
target system may still show the format as being auto:none. If so, use
either of the following commands on the target system to instruct
VxVM to rescan the format of the disks:
# vxdctl enable
# vxdisk scandisks
Has the format of
any of the disks
changed since the
target system was
last booted?
File system considerations
To set up or migrate volumes with VxFS file systems with CDS, you must consider
the file system requirements. This section describes these requirements. It also
describes additional tasks required for migrating or setting up in CDS.
485Migrating data between platforms
File system considerations