linux-kernel - Re: Ext3 mounted as ext2 but journal still in effect.

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Date:	Thu, 11 Jan 2007 21:25:45 -0800
From:	Andrew Morton <akpm@...l.org>
To:	Alberto Alonso <alberto@...ys.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Ext3 mounted as ext2 but journal still in effect.

On Thu, 11 Jan 2007 23:08:16 -0600
Alberto Alonso <alberto@...ys.net> wrote:

> I have an ext3 filesystem that has been having problems
> with its journal. The result is that the file system
> remounts internally as read-only and the server becomes
> unusable, even shutdown does not work, using up 100% of
> the CPU but not rebooting.
> 
> I found some postings indicating that mounting it as
> ext2 should fix the problem, as it doesn't appear to be
> a hardware issue.
> 
> So, I decided to mount everything as ext2. Mount shows this:
> 
> # mount
> /dev/hda2 on / type ext2 (rw,usrquota)
> none on /proc type proc (rw)
> none on /sys type sysfs (rw)
> none on /dev/pts type devpts (rw,gid=5,mode=620)
> usbfs on /proc/bus/usb type usbfs (rw)
> /dev/hda1 on /boot type ext2 (rw)
> none on /dev/shm type tmpfs (rw,noexec)
> none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
> sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
> 
> But now I still get the error:
> 
> # dmesg
> [...]
> EXT3-fs error (device hda2) in start_transaction: Journal has aborted
> EXT3-fs error (device hda2) in start_transaction: Journal has aborted
> EXT3-fs error (device hda2) in start_transaction: Journal has aborted
> EXT3-fs error (device hda2) in start_transaction: Journal has aborted
> [...]
> 
> 
> The kernel is:
> 
> # uname -a
> Linux hyperweb.net 2.6.5-1.358smp #1 SMP Sat May 8 09:25:36 EDT 2004
> i686 i686 i386 GNU/Linux
> 
> 
> Any ideas?
> 

mount(8) tells lies.  Look in /proc/mounts and you'll see that it's really
mounted as ext3.

You probably want to add `rootfstype=ext2' to the kernel boot command line.

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