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
