From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Edward Shishkin" <edward.shishkin@gmail.com>
Subject: Re: Reiser4 and loop device problems
Date: Wed, 5 Dec 2007 02:39:05 +0300
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To: ReiserFS Mailing List <reiserfs-devel@vger.kernel.org>
Cc: Thomas Kuther <gimpel@sonnenkinder.org>, Arend Freije <afreije@inn.nl>, Dushan Tcholich <dusanc@gmail.com>

On 11/16/07, Edward Shishkin <edward.shishkin@gmail.com> wrote:
> On 11/16/07, Arend Freije <afreije@inn.nl> wrote:
> >
> >  Edward Shishkin wrote:
> >  On 11/16/07, Arend Freije <afreije@inn.nl> wrote:
> >
> >
> >  Edward Shishkin wrote:
> >
> >
> >
> >  On Do, 15.11.07 22:49 "Dushan Tcholich" <dusanc@gmail.com> wrote:
> >
> >
> >
> >
> >  Can you remember the last kernel that worked?
> >
> > Thanks
> >
> > Dushan
> >
> >
> >  Unfortunately not for sure. I'm not even sure if it ever worked at all,
> > to be honest. There were some old threads from 2003 saying that loop is
> > not supported (yet). Did that ever change?
> >
> >
> >  No, it didn't.
> > Sorry..
> >
> >
> >
> >
> >  On Nov 15, 2007 10:44 PM, Thomas Kuther <gimpel@sonnenkinder.org>
> > wrote:
> >
> >
> >
> >  ...
> > * filsystem created with
> >  $ mkfs.reiser4
> > * mounted with noatime
> > * no cryptcompress or anything non-default
> >
> > $ mount -o loop -t
> > iso9660 /tmp/systemrescuecd-x86-0.4.0.iso /mnt/cdrom ioctl:
> > LOOP_SET_FD: Invalid argument
> >
> >
> >
> >  Hi,
> >
> >
> >  Hello
> >
> >
> >
> >  Sorry for intruding, but I'm a bit surprised about the conformation on
> > 'loop is not supported (yet)' question.
> > The example of Thomas shows the mounting of an ISO-9960 file system via
> > a loop device. All partions on my system are reiser4, and I can execute
> > 'mount -t iso9960 -o loop' without any problem. Why do you confirm that
> > loop is still not supported?
> >
> >
> >  I tested it a long time ago and there were stall problems.
> > Since nobody looked at this for a long time, I think, it would be better
> > for this to be disabled..
> >  Hi Edward,
> >
> >  Thanks for your reply. Just to be sure: do you want to disable mounting
> > loop devices created with a file containing an image of a Reiser4 file
> > system, or do you want to disable mounting loop devices (of any type) on top
> > of a already mounted Reiser4 file system?
> >
>
> Loop devices created over reiser4 files don't work properly.
> Do not try to use them for now.
>

Well, I have restored loopback functionality, and loop devices
over files managed by default file plugin seems to be working
in the latest -mm and reiser4-for-2.6.23.

Thanks,
Edward.

> Thanks,
> Edward.
>