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- Newsgroups: comp.unix.aix
- Path: sparky!uunet!utcsri!geac!censor!comspec!noweh.com!georgn
- From: georgn@noweh.com (Georg S. Nikodym)
- Subject: Re: NFS, /dev
- In-Reply-To: sosa@remus.rutgers.edu's message of 12 Dec 92 00:30:19 GMT
- Message-ID: <GEORGN.92Dec17013522@idcrisis.noweh.com>
- Followup-To: comp.unix.aix
- Sender: georgn@noweh.com (Georg S. Nikodym)
- Organization: Noweh Software, Mississauga, CANADA
- References: <Dec.11.19.30.18.1992.7849@remus.rutgers.edu>
- Date: Thu, 17 Dec 1992 06:35:25 GMT
- Lines: 35
-
- In article <Dec.11.19.30.18.1992.7849@remus.rutgers.edu> sosa@remus.rutgers.edu (Fred L. Sosa) writes:
-
- I have a RS/6000 running 3.2 with tape devices connected to it. I have
- another RS/6000 running 3.1.5 I believe. I was wondering if it is
- possible to mount /dev on the 3.1.5 machine so it could access the
- tape drives on the other machine running 3.2. If it is possible how
- would you do it? Is there another way of doing it? Thanks in advance.
-
- While it is entirely possible for you to mount a /dev directory from
- another machine, it doesn't buy you anything. A entry in /dev is
- simply a node in the filesystem that has a major and minor number
- attached to it and these numbers are used to communicate with a device
- driver through the LOCAL kernel.
-
- As for a solution to your problem, there are many. For simple
- backup/restore operations, rdump and rrestore should fit the bill.
- For other things, some creativity helps. One method that's commonly
- used is to use a command pipeline like:
-
- <command_to_construct_data> | rsh <remote_host> dd of=<tape_device>
-
- which might become something like:
-
- tar cvf - directory | rsh host dd of=/dev/rst0
-
- You may have to add blocking arguments to dd (bs=XXX or ibs=XXX and/or
- obs=XXX) to get things to work correctly.
-
- Hope that helped,
-
- --
- Georg S. Nikodym - (416) 272-5198 / 720-4729
- Noweh Software - Mississauga, Ontario, CANADA
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