Thread View: comp.sys.next.sysadmin
4 messages
4 total messages
Started by Alain Plante
Thu, 30 Jul 1992 19:21
dump and rdump
Author: Alain Plante
Date: Thu, 30 Jul 1992 19:21
Date: Thu, 30 Jul 1992 19:21
24 lines
1150 bytes
1150 bytes
Hello all, I'm trying to backup a few Next Machines using rdump on a sun Sparc 2. My problem is that i do not want to allow the root user on the Next to make a remote shell on the Sparc. On the other Sparc machine, i'm using a "dumb" user so basically what i'm doing on a sparc is rsh machine 0uncsdh 54000 6000 backup@machine.with.exabyte /dev/sd0a and that's working fine... It seems that i cannot do the same on the Next Machine. Is there anyone around who can help me? Alain e-mail : a_plante@macgyver.crim.ca -- ------------------------------------------------------------------------------- Alain Plante | Operateur | Centre de recherche informatique de Montreal (CRIM)
Re: dump and rdump
Author: John Robison
Date: Fri, 31 Jul 1992 23:52
Date: Fri, 31 Jul 1992 23:52
32 lines
1255 bytes
1255 bytes
Alain Plante writes
> Hello all,
>
> I'm trying to backup a few Next Machines using rdump on a
> sun Sparc 2.
>
That's your problem.
RTFM "man dump"
In the fine print, it says:
=======
Because of the interworkings of rmt and rdump, it is only
possible to run rdump from one NeXT machine to another.
This is in part due to the fact that the ioctls for the
removable disk differ from the mag tape ioctls available
with rmt, and in part due to the fact that NFS does not
implement remote device ioctls.
=======
Whatever the excuse, uh, reason, that means you have to buy *two*
backup devices instead of one if you want automated backups in a mixed
environment.
And that really sucks.
Later,
John
--
John Robison - Oceania Health Care Systems
john@oceania.com - NeXTMail Gladly Accepted
Re: dump and rdump
Author: David Lemson
Date: Sat, 01 Aug 1992 04:33
Date: Sat, 01 Aug 1992 04:33
25 lines
1578 bytes
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john@oceania.com (John Robison) writes: >> I'm trying to backup a few Next Machines using rdump on a >> sun Sparc 2. >> >RTFM "man dump" Yep. Major hassle. I even tried going around rdump by executing the following on a Sparc 2 with a tape drive on it: rsh nextmachine "dump sf 999999 -" | dd of=/dev/nrst0 But no go...the dump is not readable (in fact, restore seems to core dump when it tries to read it!) If anyone else gets this to work, let me know... By the way, our solution to this is to use gnutar on the NeXT piped through to dd on the local machine. The restores are VERY slow, but they work. gnutar was necessary because we have filenames that are upwards of 200 chars long and tar's limit is 100 chars. gnutar has a different header format and can accept very long filenames. -- David Lemson (217) 244-1205 University of Illinois NeXT Campus Consultant / CCSO NeXT Lab System Admin Internet : lemson@uiuc.edu UUCP :...!uiucuxc!uiucux1!lemson NeXTMail accepted BITNET : LEMSON@UIUCVMD
Re: dump and rdump
Author: Rich Winkel
Date: Tue, 04 Aug 1992 22:26
Date: Tue, 04 Aug 1992 22:26
19 lines
1185 bytes
1185 bytes
In <BsA2CB.B93@oceania.com> john@oceania.com (John Robison) writes: >Alain Plante writes >> I'm trying to backup a few Next Machines using rdump on a >> sun Sparc 2. >> >RTFM "man dump" >In the fine print, it says: >======= > Because of the interworkings of rmt and rdump, it is only > possible to run rdump from one NeXT machine to another. > This is in part due to the fact that the ioctls for the > removable disk differ from the mag tape ioctls available > with rmt, and in part due to the fact that NFS does not > implement remote device ioctls. Eh? I've been dumping next's to sun exabyte for a couple months. Is there something I need to know??? It seemed to run without errors. Rich
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