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Re: bin/38171 (mount_ffs doesn't work on CDs)
The following reply was made to PR bin/38171; it has been noted by GNATS.
From: Matthew Mondor <mm_lists%pulsar-zone.net@localhost>
Subject: Re: bin/38171 (mount_ffs doesn't work on CDs)
Date: Thu, 17 Feb 2011 00:41:17 -0500
On Wed, 9 Feb 2011 10:05:03 +0000 (UTC)
Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost> wrote:
> The following reply was made to PR bin/38171; it has been noted by GNATS.
> From: Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>
> To: gnats-bugs%NetBSD.org@localhost
> Cc: tsutsui%ceres.dti.ne.jp@localhost
> Subject: Re: bin/38171 (mount_ffs doesn't work on CDs)
> Date: Wed, 9 Feb 2011 19:04:00 +0900
> > Synopsis: mount_ffs doesn't work on CDs
> > The necessary blocksize translation layer should probably be written
> > but probably won't be happening particularly soon...
> FYI, ffs with bsize=16384,fsize=2048 on CD-R can be mounted by mount_ffs(8).
Lately I wanted to try this on netbsd-5/i386 but was getting issues
(EINVAL received by getdents(2) at ls(1) attempts) with seemingly empty
directories which did have files. I however first tried with FFSv2 and
-b 16384 -f 2048 as above. Then I tried with FFSv2 and 512 blocks and
using a fake cd0 label as chown in the CGD on DVD guide, but with very
limited success (/ would list, other directories wouldn't, and EINVAL
would occur for getdents(2) and open(2) or read(2) in a known to exist
Later I tried with FFSv1 and without any special option, as shown in
the guide, along with a real label on CGD and a fake fixed label on
cd0, and that worked. It's unclear if it's an FFSv2 issue, and I
didn't yet decide to scrap more DVDs trying.
For reference, the current working scripts for netbsd-5 can be found at:
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