Hi
relayout is one of the best solution to increase the volume size with few
number of disks.
vxassist relayout:
This operation changes the number of columns in a stripe or
the stripe width of a volume. It also converts a
volume to or from RAID-5, mirrored, concat-
mirrored, striped, or any similar layout.
During the relayout process, a volume may also be
converted into an intermediate layout. For exam-
ple, to convert from a 4-column mirror-stripe to a
5-column mirror-stripe, the volume is first
changed to a stripe-mirror before the new column
is added.
To change volume vol1 from a 4-column mirror-
stripe to a 5-column mirror-stripe, enter:
vxassist relayout vol1 ncol=5
vxassist convert vol1 layout=mirror-stripe
To change volume vol1 from a 4-column stripe-
mirror to a 5-column stripe-mirror, enter:
vxassist relayout vol1 ncol=5
If you view the volume with vxprint during this
layout conversion, the volume shows several subvo-
lumes that are used during the change, and a more
complex configuration than usual.
After the new column is added the volume remains
in the stripe-mirror layout. You must use
vxassist convert to convert back to a mirror-
stripe layout.
Note: If the system crashes during a relayout
operation, the process continues. However, if the
relayout was a two-stage operation, you must run a
vxassist convert command to convert back to the
original layout.
On 7/26/07, Doug Hughes <[EMAIL PROTECTED]> wrote:
>
> Amit Srivastava wrote:
> > Hi,
> > 1) Perhaps ur all the 13disks are utilised in forming that single
> > plex ........ that's why u thre is no space showing in the dg .
> >
> > 2) To resize ur volume u need to add the same number of disks equal to
> > ur number of columns ........ this means u have to add 13disks for
> > that and if u try to resize such a stripe volume by using only one
> > disk then the temorary volumes would occupy the space of ur newly
> > added disk ...... hence no such space would be reflected in ur volume.
> >
> > kindly send the output of ur vxprint .
> re: 2)
> This used to be the only way to resize a volume back in VxVM < 3.0, but
> since then a 'relayout' option has been added whereby you can turn a 13
> disk stripe into a 14 disk stripe (or similar).
>
> Of course, a simple stripe has no redundancy and thus increases your
> risk of having to restore from tape, but you can grow things more
> incrementally. (Corrollary: if you have a mirror, you need at least 2
> disks to relayout and increase volume size)
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>
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