Installation guide

– The maximum number of disks that can be added to LSM has
increased from 128 to 256.
– The maximum size of an LSM volume has increased from 128 GB to
512 GB.
The functionality and syntax of the LSM commands used for encapsulation,
unencapsulation, and mirroring have changed in this release, as follows:
• The volencap command now supports the following features and
functions. For details, see volencap
(8).
– Allows the initialization of LSM and encapsulation of the system
disk in one step. This requires the use of a free partition table entry.
– Can be used to encapsulate all partitions on a disk. This requires
the temporary use of a free partition table entry if the system disk
is being encapsulated.
– Can be used to encapsulate only the root and swap partitions.
– Automatically creates a new disk group if specified.
– Subsumes the functionality of the voladvdomencap command.
– Takes multiple arguments.
– Uses a simple disk instead of a sliced disk for system disk
encapsulation.
– For disk label characteristics, assumes that partition c maps the
entire disk, and that an in-use partition has an
fstype field other
than UNUSED. (If a partition’s
fstype field is UNUSED, then
volencap may allocate that partition table entry for its use.)
• The volrootmir command now supports the following features and
functions. For details, see volrootmir
(8).
– Can be used to mirror all volumes on the system disk by specifying
the -a option. This option requires the target disk to be of the same
type as the source disk.
– Can be used to encapsulate only the root or swap partition by
omitting the -a option. This procedure requires that the target root
and swap partitions are large enough to hold rootvol and
swapvol, but the target and source disks need not be of the same
type.
• When used with the -a option, the volunroot command
unencapsulates all LSM volumes on the system disk, not just rootvol
and swapvol. The requirements for unencapsulation are:
– The partition associated with the volume must have been initialized
as a nopriv disk.
Migration from ULTRIX Version 4.5 to DIGITAL UNIX Version 4.0B G–21