Red Hat

Hi,

I need to increase the FS on a vxfs on red hat ent 4. I need to get familiar with it by giving me how to query it if there's a free space. And then increase it, if there's any.

Can it be increase on the fly? I mean, no unmount and just increase it online.

I think the FS is also on SAN but I don't know what kind (or vendor, etc).

Thanks for any comment you may add.

Happy Holiday.

Well, in general, increasing the size of a filesystem means (1) increasing the partition or physical disk space allocated to the mount point and then (2) running some resize utility specific to the file system. To step (1) you need to know more about the SAN and to reallocate parititon size on it. To step (2) you need the extendfs program, which HP documents here and which probably Veritas documents elsewhere. According to the HP documentation, it seems as if online resizing is supported. (That is no, umount and remount necessary). However, if the underlying disk system is actually an LVM volume, you'll need to unmount, resize the LVM volume using lvextend, then use extendfs and then remount.

How do I query if there's available free disk space?

That's entirely dependent on your SAN setup.

you can query with

vxassist -g vol_group maxsize

Maximum volume size: 285112320 (149000Mb)

it means there's available 149G