RE: RH AS 4U2 - LVM extend

Thanks a lot, Nick,

Ext2online does extend a mounted an ext3 file system live.

While checking the man page on ext2online, I have also found ext2resize
and ext2prepare being mentioned for the better support of resizing at
larger capacity.

But I cannot locate ext2resize nor ext2prepare binaries, and they man
pages.

Do you have any experience on them, or do you know which package they
belong to?

Peter

-----Original Message-----
From: redhat-list-bounces@xxxxxxxxxx
[mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Lunt, Nick
Sent: 16 January 2006 09:00
To: General Red Hat Linux discussion list; Getting started with Red Hat
Linux
Subject: RE: RH AS 4U2 - LVM extend

Hi,




> -----Original Message-----
> From: Chiu, PCM (Peter) [mailto:P.C.M.Chiu@xxxxxxxx]
> Sent: 16 January 2006 08:55
> To: General Red Hat Linux discussion list; Getting started with Red
> Hat Linux
> Cc: Chiu, PCM (Peter)
> Subject: RH AS 4U2 - LVM extend
>
>
> Hi,
>
> I recall in the past that I was able to extend a lvm file system
> without the need of reformatting and restoring the contents, but I
> don't seem to be able to do under RH AS 4U2.
>
> Below are the steps that I take. vgdisplay shows the volume group
> capacity is extended, but lvdisplay shows the logical volume is not.
> Have I missed something here?
>
> Thanks.
>
> fdisk /dev/had to make new partitions 7 and 8 with type 8e
>
> pvcreate /dev/hda7
> vgcreate peter-vg /dev/hda7
> lvcreate -L 2G /dev/peter-vg -n peter-lv mke2fs -j
> /dev/peter-vg/peter-lv mount /dev/peter-vg/peter-lv /data
> - A 2GB /data is mounted and works ok.
>
> umount /data
> pvcreate /dev/hda8
> vgextend peter-vg /dev/hda8
> lvextend -L 4G /dev/peter-vg/peter-lv
>
> The last command is accepted but no action is taken.
> The /dev/peter-vg/peter-lv is still mounted as a 2GB file system.
> Tried reboot, vgscan and vgchange -ay, no luck.
>

have you tried ext2online /dev/peter-vg/peter-lv ?

This should work with the filesystem mounted. Having said that, I've
only ever used it on ext3 (journalling), but the man page says it's ext2
so you should be fine.

The filesystem should be extended after that. As it stands at the moment
you've just extended the nr of extents available but not yet used them.
Some shops do that to make it easy to extend filesystems when they fill
up.

Good luck,
Nick .


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