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Date: Mon, 11 Oct 2004 09:56:15 -0400
From: Arshavir Grigorian <ag@m-cam.com>
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Subject: Re: [linux-lvm] How to extend the file system online?
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To: LVM general discussion and development <linux-lvm@redhat.com>

Rocty Wang wrote:

> Hi, all,
>
> After I used LVM2 to create PV, VG, LV on the attached storage
>
> disks, I want to format logical volume as a file system and
>
> possibly extend the file system of LV online. But when I prefer to
>
> “ext3” file system, I find the tool “resize2fs” only can resize
>
> ext3 file system offline.
>
> OS: Linux Fedora Core2(kernel 2.6.7-1.494.2.2smp)
>
> LVM version: 2.00.15(2004-04-19)
>
> Library version: 1.00.14-ioctl(2004-04-06)
>
> Driver version: 4.1.0
>
> Operations:
>
> pvcreate /dev/sda
>
> pvcreate /dev/sdb
>
> vgcreate vg1 /dev/sda /dev/sdb
>
> lvcreate –L 100G –n lv1 vg1
>
> mke2fs /dev/vg1/lv1
>
> mount /dev/vg1/lv1 /mnt
>
> lvextend –L +50G /dev/vg1/lv1
>
> Then I used “resize2fs” tool to extend file system, but failed.
>
> I know it must be done when “umount” the lv1.
>
> If another tool can finish that running under Linux?
>
> Or if any other file system can be mounted and resized online under 
> Linux?
>
> XFS? I don’t know.
>
> Anyone can help me? Thanks!
>
> Rocty Wang
>
> 2004-10-09
>
You can try ReiserFS, which does allow to be resized while mounted. 
--Arshavir