Convert LVM volume formatted ext2 to ext3 ?

[i2ambler]

I have a question, i accidentally formatted an lvm volume as ext2 after creating it. Then of course, we copied a ton of data to it before I realized it was ext2. (I guess ext2 was the default when using mkfs without a -t) Anyway - can I just use tune2fs -j on the LVM just like I would a /dev/sdx device?

Thanks for your assistance!

[plarsen]

Yes - tune2fs is the way. But why not upgrade to ext4 instead of ext3??

tune2fs -O extents,uninit_bg /dev/mapper/vg_lvname

Make sure you also change the setting in /etc/fstab to say ext4 instead of ext2.

---------- Post added at 12:48 PM GMT ---------- Previous post was at 12:46 PM GMT ----------

Forgot to say, you of course still have to run the:

tune2fs -j /dev/mapper/vg_lvname

command too.

Finish up with

e2fsck -fDC0 /dev/mapper/vg_lvname

I think it's better to be safe as the structures/capabilities change quite a lot with ext4. I recommend you keep the volume unmounted while you do this.

[i2ambler]

Cool thanks.. Ill probably stick to ext3 for now.