Should i've to unmount the filesystem if i extend it using sam

[siva0123]

Hi,

I'm going add space in a database filesystem.
which will be the best way?
1.Command line or SAM?

If SAM should i have to unmount the FS .

Thanks,
Siva

[Pete Randall]

Either way you feel comfortable with. If you use SAM, it will attempt to unmount it for you.


Pete

[James R. Ferguson]

Hi Siva:

Whether or not you (at command line) or SAM need to unmount the filesystem is dependent upon whether or not you have Online JFS.

If you have Online JFS, then you can use SAM or the command line to expand your filesystem without an unmount.

To see if you have Online JFS:

# swlist -l product | grep -i OnlineJFS

Regards!

...JRF...

[siva0123]

Pete,

If the user says that no downtime will be allowed i know i've to go for online JFS .

But Will not sam use Online jfs (fsadm) in the background if online jfs is available in the system.

Thanks,
siva

[siva0123]

Hi,

Swlist gives the following output
DISPLAY=158.98.223.121:0.0
root@ecom01:/[1]# swlist -l fileset | grep -i onlinejfs
# PHKL_24745 1.0 VxFS 31 OnlineJFS cumulative patch

It shows that only a patch is there?

Can i use Online jfs now.

Siva

[Cem Tugrul]

Hi Siva,

Of course you may go with SAM but sometimes
SAM also may go wrong.I always go with from
command prompt(lvextend-extendfs...)
the Q is if you installed online-jfs
then you do not need to umount FS
the other Q is Do you want to take risk???
Last month,i also extend my FS 450Gb-->550Gb
and i have installed online-jfs BUT;
First i waited my offline_bck finished
(means application-DB) closed then
i made my maintenance(FS extending)
Murphy may in charge!!!!
:-))

good Luck,

[Geoff Wild · Accepted solution]

To check for onlinejfs:

# /usr/sbin/vxlicense -p

Should show something like this:

vrts:vxlicense: INFO: Feature name: HP_OnlineJFS [50]
vrts:vxlicense: INFO: Number of licenses: 1 (non-floating)
vrts:vxlicense: INFO: Expiration date: Sun Jun 24 02:00:00 2007 (519.7 days from now)
vrts:vxlicense: INFO: Release Level: 22
vrts:vxlicense: INFO: Machine Class: All
vrts:vxlicense: INFO: Site ID: 0


If it does, then you can extend on the fly:

lvextend -l /dev/vgXX/lvolXX

fsadm -b M /path/mount

IE:

lvextend -L 512 /dev/vg00/lvol4
fsadm -F vxfs -b 512M /tmp

Rgds...Geoff

[Jeff Schussele]

Hi Siva,

SAM is smart enough to know whether OnLine JFS is installed or not.
So, the answer is - yes - if OJFS is there, SAM will use it.

HTH,
Jeff

[Deoncia Grayson_1]

If you have Online JFS on your server and you expand the filesystem via SAM it will extend it using fsadm.

[Pete Randall]

Use "-l product " in your swlist command to check for online JFS:

# swlist -l product |grep -i online
OnlineJFS B.11.11 Online features of the VxFS File System


Pete

[siva0123]

Problem resolved.

Thanks