Veritas Storage Foundation Cross-Platform Data Sharing 5.0 AdministratorÆs Guide, HP-UX 11i v3, First Edition, May 2008

34 Maintaining your system
Disk group tasks
Note the following restrictions
:
Setting the DRL map length
To set a DRL map length
1 Stop the volume to make the DRL inactive.
2 Type the following command:
# vxvol -g dgTestSol2 set [loglen= len-blocks ] \
[logmap_len=
len-bytes ] volume
This command does not change the existing DRL map size.
Note the following restrictions
:
If neither logmap_len nor
loglen is specified
■ loglen is set to a default value that is based
on disk group alignment.
■ maplen is set to a reasonable value.
If only loglen is specified
■ For pre-version 110 disk groups, maplen is set
to zero.
■ For version 110 and greater disk groups,
maplen is set to use all the bytes available in
the on-disk map.
If only logmap_len is specified
■ For pre-version 110 disk groups, logmap_len
is not applicable.
■ For version 110 and greater disk groups,
maplen must be less than the number of
available bytes in the on-disk map for the
default log length.
If both logmap_len and
loglen are specified
■ if logmap_len is greater than loglen/2,
vxvol fails with an error message. Either
increase loglen to a sufficiently large value,
or decrease logmap_len to a sufficiently
small value.
■ The value of logmap_len cannot exceed the
number of bytes in the on-disk map.