Re: [ANNOUNCE] Ext3 vs Reiserfs benchmarks

[Shawn <core@enodev.com>]

On 07/19, Andreas Dilger said something like:
> On Jul 19, 2002  10:29 +0200, Matthias Andree wrote:
> > What kernel version is necessary to achieve this on production kernels
> > (i. e. 2.4)?
> > 
> > Does "consistent" mean "fsck proof"?
> > 
> > Here's what I tried, on Linux-2.4.19-pre10-ac3 (IIRC) (ext3fs):
> > 
> > (from memory, history not available, different machine):
> > lvcreate --snapshot snap /dev/vg0/home
> > e2fsck -f /dev/vg0/snap
> > dump -0 ...
> > 
> > It reported zero dtime for one file and two bitmap differences.
> 
> That is because one critical piece is missing from 2.4, the VFS lock
> patch.  It is part of the LVM sources at sistina.com.  Chris Mason has
> been trying to get it in, but it is delayed until 2.4.19 is out.
> 
> > dump did not complain however, and given what e2fsck had to complain,
> > I'd happily force mount such a file system when just a deletion has not
> > completed.
> 
> You cannot mount a dirty ext3 filesystem from read-only media.

I thought you could "mount -t ext2" ext3 volumes, and thought you could
force mount ext2.

I'm no Andreas Dilger, so don't take this like I'm disagreeing...

--
Shawn Leas
core@enodev.com

I went to the bank and asked to borrow a cup of money.  They
said, "What for?"  I said, "I'm going to buy some sugar."
						-- Stephen Wright