patch for online extention of volume groups

[Senthil-ahm]

is it possible to extended the volume groups with out unmounting the file systems in hpux 10.2, D class server.

If possible any patch has to be loaded. then what is that patch & how to load it.
regds
senthil

[Ninad_1]

Senthil,

Do you want to extend Volume group - by adding more disks to it or the size of Logical volume ?
If you want to add more disks to your volume group - then you do not need to unmount filesystems - say if you have an unused disk /dev/dsk/c0t0d5 and want to extend volume group vg01, then
1. pvcreate /dev/rdsk/c0t0d5
2. vgdisplay /dev/vg01
[ Check that Max PVs is greater than Curr PV - this means you can add more PVs to the volume group]
3. vgextend /dev/vg01 /dev/dsk/c0t0d5
4. vgdisplay -v /dev/vg01


If you want to extend logical volume online (w/o unmounting filesystem) you need the Online JFS software installed on your system which is a licensed product. But you can extend filesystem and logical volume without this software if its possible to unmount the filesystem for extension.

Hope this helps,
Ninad

[Steven E. Protter]

Shalom senthil,

Online JFS would normally be the way to go, however for 10.20, an unsupported OS that has been unsupported for nearly three years, I don't think you can purchase it any more. Check with your HP rep.

My guess is you will be umounting some logical volumes.

This is not a feature delivered by patch btw.

You can extend a logical volume without umount.

What you can not do without umount is the extendfs command.

SEP

[Sยภเl Kย๓คг]

Hi,

There is no patch online extension feature. You have to install the Online JFS product. HP Part Number is 5971-4611.

http://docs.hp.com/en/5971-4611/ch01s02.html.

Without this product, you may have to unmount and use the extendfs command to extend the filesystems.

Regards,
Sunil

[Bill Hassell]

10.20 was obsolete in 2001 and this includes all optional products such as Online JFS. To extend a filesystem without unmounting is not a patch, it is a purchased product. As mentioned, volume groups may be extended without unmounting the logical volumes contained inside the volume group. Actually, you can extend aq logical volume at any time but the filesystem will not change. It must be unmounted and the extendfs command run to take advantage of the additional space.

However, this is just background information because 10.20 products have not been available for many years.