How about ext3? (was RE: [linux-lvm] XFS and LVM)

[Jay Weber]

Send it my way.  I'm game. :)  I haven't checked out any of your online
resize at all up to this point, I've been using the resize2fs (Ted Tso)
bit for offline resizing, but I'm more than willing to bang on the online
support also. :)

On Wed, 23 May 2001, Andreas Dilger wrote:

> Date: Wed, 23 May 2001 10:53:28 -0600 (MDT)
> From: Andreas Dilger <adilger at turbolinux.com>
> Reply-To: linux-lvm at sistina.com
> To: linux-lvm at sistina.com
> Cc: Stephen Tweedie <sct at redhat.com>, Steve Wray <steve.wray at the.net.nz>
> Subject: Re: How about ext3? (was RE: [linux-lvm] XFS and LVM)
>
> Stephen writes:
> > On Wed, May 23, 2001 at 08:35:36PM +1200, Steve Wray wrote:
> > > Any experience with ext3?
> > > Is it shrinkable?
> >
> > It is format-compatible with ext2, so offline e2resize should work
> > happily on ext3 for both shrinking and growing.  Online, only growing
> > has been implemented (but not all of the kernel support is
> > integrated).
> >
> > I haven't tried doing a resize on ext3 so we might have to teach the
> > e2resize tools not to worry if they see the HAS_JOURNAL flag set in
> > the superblock, but there is nothing in the format itself to prevent
> > it from working.
>
> The ext2resize code has no problem with the non-reserved journal files
> for offline resizing.  However, I just noticed last night that it doesn't
> handle the reserved journal inode properly.  It halts the resize because
> it can't find the owner of the blocks that the reserved journal is using.
>
> Also, while I have finished an online ext3 resizing patch which works
> with the journaling properly, I haven't polished it up and finished the
> user-space support for it.  It is available on request to people who
> really want to play with it...
>
> Cheers, Andreas
> --
> Andreas Dilger  \ "If a man ate a pound of pasta and a pound of antipasto,
>                  \  would they cancel out, leaving him still hungry?"
> http://www-mddsp.enel.ucalgary.ca/People/adilger/               -- Dogbert
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