Increasing the size of several logical volume using online JFS within a ServiceGuard cluster

[Andrew Kaplan]

Hi there --

I need to increase the size of several logical volumes within a serviceguard cluster. The system has online jfs.

I have the Veritas Enterprise Administrator utility available via SAM. Is that the utility that I should use to complete this task, or is there a better alternative? Thanks.

[Asif Sharif]

See the below thread,

http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1238570

Regards,
Asif Sharif

[Avinash20]

1. Extend the logical volume:

lvextend -L 256 /dev/vg07/lvolx

256 MB is now the Total size of the LV

2. Extend the filesystem:

# fsadm -b 262144 /FS

The size is in blocks, so multiply the logical volume size by 1024
(256 x 1024 = 262144)

>> If the VG is only activated in only One node (Active - Passive Cluster) the above two steps are enough.
NOTE: If you are adding extending the VG (adding disk to a VG) then you have to perform the vgexport and vgimport operations.

[Rasheed Tamton]

Hi,

To me the better alternative is always the commands. Alos you have to check whether there are mirrors on the LVs.

First check the current size of the LV:

lvdisplay /dev/vg00/lvol1|grep "LV Size"
(chnage the LV name with your LV - you will get the current size in Mbytes)

extend to the new size:
lvextend -L 2048 /dev/vg00/lvol1
(here you are saying that you want to increase the lvol1 to 2048MB which would be the new size. You have to always have a backup prior to doing this, if you are not comfortable with the tasks).

fsadm -b 2048m /dirname (mountpoint of the LV)
You are extending the file system to 2048MB.

Make sure that the size will be always greater than the current size.

Regards.

[Sajjad Sahir]

Dear Andre
Increasing the size of several logical volume using online JFS within a ServiceGuard cluster?

u don't worry about clustering env there.
but if u are doing any thing on clustered
volume group u have to deactivate the clustered volume group first. but if u are doing other volume groups u can use lvextend and fsadm command to extend logical volume and file system, but in case of clustered volume group u have to follow up some other additional steps. ok

thanks and regards

Sajjad