Thanks for the answer

My question was specific to the File system whether it needs to be
recreated again to have the additional disk . Or is it that i just need
to add one disk and extend the vg ?

Regards
RC
cmstan2002@gmail.com wrote:
> this is a problem with AIX LVM.... Unfortunately, AIX won't let you
> concatenate a luns to a striped LV, unless you maintain the stripe
> width. You can extend your LV by the same number of LUNs, though. In
> your case, you would have to add 12 disks to your vg. Do a "chlv -u 24
> ", "chlv -x #m ", "extendlv", "chfs".... This being said, when
> you "extendlv", you do not have to use the same # of pp's. So if you
> only need a little space, you can only allocate a tiny portion of those
> 12 disks - you just need to stripe across all of them...
>
> I've asked IBM repeatedly why we can't have concatenated stripes of
> varying stripe width... still haven't received a good answer....
> they'll probably put in a change request... but until then, you're
> better off using a real OS with a real volume manager. Solaris with
> disksuite!
>
>
> c00p wrote:
> > I believe it will let you extend the VG and chfs will grow your
> > filesytem, but the new disk won't be striped. In order to maintain the
> > integrity of your striped LV you will need to backup and restore the
> > data to a larger striped LV.
> >
> > On Oct 9, 3:11 am, "rcee" <4mystud...@gmail.com> wrote:
> > > Guys ,
> > >
> > > I have a striped lv in a Volume Group and there are 12 hard disks on
> > > it.
> > >
> > > I would like to increase the file system by adding one more disk to it
> > > . SO is it possible to do it
> > >
> > > online without recreating the lv.Any other better options for this
> > > lslv SGPRODlv
> > >
> > > LOGICAL VOLUME: SGPRODlv VOLUME GROUP: SGPRODvg
> > > LV IDENTIFIER: 00374b7c00004c00000001018fbb1a68.3 PERMISSION:
> > > read/write
> > > VG STATE: active/complete LV STATE: opened/syncd
> > > TYPE: jfs2 WRITE VERIFY: off
> > > MAX LPs: 1024 PP SIZE: 128
> > > megabyte(s)
> > > COPIES: 1 SCHED POLICY: striped
> > > LPs: 804 PPs: 804
> > > STALE PPs: 0 BB POLICY: relocatable
> > > INTER-POLICY: maximum RELOCATABLE: no
> > > INTRA-POLICY: middle UPPER BOUND: 12
> > > MOUNT POINT: /PROD LABEL: /PROD
> > > MIRROR WRITE CONSISTENCY: on/ACTIVE
> > > EACH LP COPY ON A SEPARATE PV ?: yes (superstrict)
> > >
> > > Serialize IO ?: NO
> > > STRIPE WIDTH: 12
> > > STRIPE SIZE: 4K
> > >
> > > Regards
> > > Rajesh