I need to increase a filesystem in root volume group using Online-JFS

[Anand Sreenivasan]

I need step by step procedure to increase /usr and /var filesystem on my root volumegroup /dev/vg00. I have online-JFS installed. I did not know whether I should increase logical volume before running fsadm command. Any help in this is appreciated. Thanks

[A. Clay Stephenson · Accepted solution]

You always run the lvextend command before running the fsadm command. Since you seem uncomfortable with this procedure, I suggest that you use SAM.

SAM -> Disks & Filesystems -> Logical Volumes

Hilight the desired LVOL then Actions -> Increase Size.

Sam will handle all the steps for you and do it safely. It's a good idea to check both filesystems to make sure that there is a lost+found directory in each one. Fsadm must have this directory to store the lock file.

[Patrick Wallek]

Yes, you MUST extend the LV before you run fsadm.

Say your new size for /var (typically lvol8) is 2048MB. You would need to do:

# lvextend -L 2048 /dev/vg00/lvol8

# fsadm -b 2048m /var

Note the m at the end of the 2048 in the fsadm command. That allows you specify the size in MB rather than the typical 512KB blocks.

[Gerald Taylor]

lvextend -L [n] /dev/[vg]/[lvol]

#where n is new logical volume size in MB

fsadm -f vxfs -b [x] /[mount_point]

#where x is filesystem size in KB

DocID USFKBRC00006800
Gerald

[Anand Sreenivasan]

Thanks guys. I was able to get that taken care of . Appreciate your help.

[Anand Sreenivasan]

Please see my earlier posting.Thanks