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Overview of Multi-Terabyte Support in Solaris Volume Manager
Starting with the Solaris 9 4/03 release, Solaris Volume Manager supports storage
devices and logical volumes greater than 1 terabyte (Tbyte) on systems running a
64-bit kernel.
Note -Use isainfo -v to determine if your system is running a 64-bit kernel. If the
string ?4-bit?appears, you are running a 64-bit kernel.
Solaris Volume Manager allows you to do the following:
 Create, modify, and delete logical volumes built on or from logical storage units
(LUNs) greater than 1 Tbyte in size.
Create, modify, and delete logical volumes that exceed 1 Tbyte in size.
Support for large volumes is automatic. If a device greater than 1 Tbyte is created,
Solaris Volume Manager configures it appropriately and without user intervention.
Large Volume Support Limitations
Solaris Volume Manager only supports large volumes (greater than 1 Tbyte) on the
Solaris 9 4/03 or later release when running a 64-bit kernel. Running a system with
large volumes under 32-bit kernel on previous Solaris 9 releases will affect Solaris
Volume Manager functionality. Specifically, note the following:
If a system with large volumes is rebooted under a 32-bit Solaris 9 4/03 or later
kernel, the large volumes will be visible through metastat output, but they
cannot be accessed, modified or deleted. In addition, new large volumes can be
created. Any volumes or file systems on a large volume will also be unavailable.
If a system with large volumes is rebooted under a Solaris release prior to Solaris 9
4/03, Solaris Volume Manager will not start. All large volumes must be removed
before Solaris Volume Manager will run under another version of the Solaris
platform.
Caution -Do not create large volumes if you expect to run the Solaris software with a
32-bit kernel or if you expect to use a version of the Solaris OS prior to the Solaris 9
4/03 release.
Using Large Volumes
All Solaris Volume Manager commands work with large volumes. No syntax
differences or special tasks are required to take advantage of large volume support.
Thus, system administrators who are familiar with Solaris Volume Manager can
immediately work with Solaris Volume Manager large volumes.
Tip -If you create large volumes, then later determine that you need to use Solaris
Volume Manager under previous releases of Solaris or that you need to run under the
32-bit Solaris 9 4/03 or later kernel, you will need to remove the large volumes. Use
the metaclear command under the 64-bit kernel to remove the large volumes from
your Solaris Volume Manager configuration before rebooting under previous Solaris
release or under a 32-bit kernel. |
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发表于 2006-02-28 15:21
