Addendum to Gregor's comments:
If you're having problems even after his suggestion, run SSH in verbose
mode:
# ssh -v hostB -l someuser dd of=/dev/rmt/0 bs=20
Then you'll get even more information than you'll know what to do with. :)
-Anne
On Mon, Jul 10, 2000 at 05:14:16PM -0700, Gregor Mosheh wrote:
>
> Try running the backup as root, and use the -l argument on the client
> side (e.g. ssh hostB -l someuser dd of=/dev/rmt/0 bs=20)
> It's safer that way, and will likely work.
>
> (You're running this on a test machine first, right? ;)
>
> --
> Gregor Mosheh
> [EMAIL PROTECTED]
> Systems Admin, Humboldt Internet
> 707.825.4638
>
>
> On Mon, 10 Jul 2000, Clifford Thurber wrote:
>
> > Hello,
> > I need to perform back ups of a Sun machine without a tape drive(2.7) to
> > another Sun machine with an external tape drive attached(2.6). I am running
> > Open SSH 2.1.1. I have SSH set up using ssh-agent with my keys in memeory
> > on both machines so that I will not be prompted for a password. The reason
> > I need to use SSH is that rsh is too dangerous. The problem stems from the
> > fact that I need to perform these back ups as a non-privelidged user.
> > Additionaly I don't think SSH supports root logins over a network which is
> > somthing I don't want to do anyway. What I did was to create a new group
> > for back ups and added my username to that group. The next thing I did was
> > to make the raw partition group owned by this new group. Yet when I go to
> > perfom the back up from hostA(without the tape drive)the error message that
> > I get is:
> >
> > ufsdump 0uf - /dev/rdsk/c0t0d0s0 | ( ssh hostB dd of=/dev/rmt/0n bs=20 )
> >
> > DUMP: Cannot open dump device `/dev/rdsk/c0t0d0s0': Permission denied
> > 0+0 records in
> > 0+0 records out
> >
> > I was told by somebody at Sun that this was not possible. That you must be
> > root to use ufsdump on a raw partition despite what I did by changing the
> > gid for the raw device. What doesn't make sense is that if this is true it
> > goes against the whole Unix philosopy of regular files and their permission
> > mode. I know plenty of people back up their machines over an SSH
> > connection. Perhaps someone could shed some light on this for me, provide a
> > work around etc. ? Thanks in advance
> >
> >
>
-------------------------------------------------------------------------
Anne Carasik | Economists state their GNP growth
Principal Consultant | projections to the nearest tenth of
SSH Communications Security, Inc. | a percentage point to prove they have
Email: [EMAIL PROTECTED] | a sense of humor. -Edgar R. Fiedler
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Unless stated otherwise above, the opinions expressed herein are my own,
not of my employer.
