Originally posted by: manu12

Hi,

I have created the lun of 15gb and assigned to aix,but now I want to expand the size of lun 15gb to 30gb,
I am having following queries.
1)wheather i have to umount that partition on aix side before increasing the size of lun on storage side or directly I can increase directly size of lun storage side
2)wheather i have use any other command along with extendvg

can you please help me what will be process.
#AIX-Forum

Originally posted by: j.gann

If you speak of SVC or DS4k Volumes - you can enlarge them on the Storage side without any preparation on the AIX side.

Making AIX recognize the new volume size is as simple as chvg -g <vgname>
No extendvg needed.

rootvg volumes cannot be enlarged, Concurrent Mode VGs have to be varied on in Standard mode -> (man chvg)

Joachim Gann
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Originally posted by: apple08

dear sir,
do u mean extending vg in hacmp cluster server? would like to confirm my understanding. if we want to extend vg in the cluster server, we are using the hacmp scpoc right? is it the same concept with that one that u said
"Concurrent Mode VGs have to be varied on in Standard mode -> (man chvg"
hope to hear from you. many thanks in advance.
#AIX-Forum

Originally posted by: j.gann

It's a different thing, apple08. The OP wants to enlarge a PV, not extend a VG by new PVs.
#AIX-Forum

Originally posted by: jvk

To complete info above:
from man chvg -g...
The user might be required to execute varyoffvg and then varyonvg on the volume group for LVM to see the size change on the disks.
#AIX-Forum

Originally posted by: apple08

but sir, if the hacmp disc is active can we execute the chvg -g? can we do the disc extend without bring down the cluster or disc?
hope to hear from you.
#AIX-Forum

Originally posted by: j.gann

just as I wrote: Concurrent Mode VGs have to be varied on in Standard mode.
A Enhanced Concurrent (EC) VG that is part of an active ressource group will be varied on in EC Mode (active or passive) on the participating nodes -> no chvg -g (at least today). Bring the ressource group down and vary on the VG in Standard mode -> chvg -g works.

Greetings
Joachim Gann
#AIX-Forum

Originally posted by: apple08

would like to confirm my understanding.
if our hacmp using EC mode, we can extend the cluster disc without bring down the cluster (smit hacmp).
correct me if i got wrong understanding.
hope to hear from you. thank you
#AIX-Forum

Originally posted by: j.gann

no, wrong. actually you're acting impolite by hijacking another poster's thread and try to make people fill the holes in your understanding. why not learn about hacmp and different vg modes first? the docs are publicly available. And then use the forum if you still have questions.

j.gann
#AIX-Forum

Originally posted by: apple08

dear sir, i'm sorry. i feel the thread is what exactly like my queries.
i hope you don't mind. i know i can extend the file system and logical volume using hacmp-scpoc online. but i don't kknow to extend the cluster disc extension can be done online also. hope to hear from you. thank you
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