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Date:      Wed, 30 Jun 2004 12:11:21 +0930
From:      "Daniel O'Connor" <doconnor@gsoft.com.au>
To:        freebsd-current@freebsd.org
Cc:        Paul Seniura <pdseniura@techie.com>
Subject:   Re: Q's about IBM TSM (was Re: HEADSUP:  ibcs2 and svr4 compat headed for history)
Message-ID:  <200406301211.21397.doconnor@gsoft.com.au>
In-Reply-To: <1088523665.67002.60.camel@zappa.Chelsea-Ct.Org>
References:  <20040629075337.81BEF16A4CF@hub.freebsd.org> <1088523665.67002.60.camel@zappa.Chelsea-Ct.Org>

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On Wed, 30 Jun 2004 01:11, Paul Mather wrote:
> I'm using the Linux 5.1.5.15 TSM client on a FreeBSD 5.2.1-RELEASE-p8
> system.  (See previous message in this thread.)  It was a bit finicky to
> get going.  I found I had better luck using emulators/linux_base-8 than
> emulators/linux_base, though I did get it running under both.  One
> hurdle for most people is that the client aborts with an out of memory
> error during file activities.  I discovered that this is caused by
> having an empty or missing /compat/linux/etc/mtab file.  Creating a
> proper mtab file solves these problems.  One way to do this is via
> something like the following:
>
> 	sed 's/ufs/ext2/' < /etc/fstab > /compat/linux/etc/mtab
>
> That way, the Linux TSM "sees" your UFS partitions and will
> backup/restore to them.

I wonder if it could work with an LD_PRELOAD or some other linker trickery..

ie replace open()/read()/write() with something that looks for /etc/mtab an=
d=20
instead opens /etc/fstab and translates it on the fly..

I don't use TSM though so I couldn't test it :)

(BTW linux_devtools can be used to make something like this, I wrote one fo=
r=20
the TeamSpeak port to hide an unimplemented sound ioctl)

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Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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