leuthold@atmo1.atmo.arizona.edu (12/07/90)
Is it possible to do multiple filesystem dumps to a single tape? I tried to do two. The first I used the /dev/nrmt0h device so the tape would not rewind. Then I dumped the second filesystem. Now I can't seem to look at the second dump. If there isn't a way to do mutiple dumps on a tape, it seems a waste to use a tape for each filesystem. (Also, I'm screwed because I messed up my /usr. Since I am a new Ultrix user, this may be a trivial question. I'm also in the process of adding clients to the server. As I under- stand the docs, I must reload Ultrix again onto a different file partition for use by the clients. This also seems like a waste of disk space. A VMS LAVC shares all the OS files and only creates small directories for system parameters. Maybe this is also true for Ultrix and I just don't understand things yet. I'm using Ultrix 4.0 on a DS5000 serving (hopefully) 3 DS2100's. Thanks for any light you can shed in this dark and damp hole I'm stuck in. Mike Leuthold University of Arizona, Atmospheric Sciences leuthold@atmo1.atmo.arizona.edu
aem@aber-cs.UUCP (Alec D.E. Muffett) (12/11/90)
In article <00940C7E.140BB020@atmo1.atmo.arizona.edu> leuthold@atmo1.atmo.arizona.edu writes: > > Is it possible to do multiple filesystem dumps to a single tape? Yes, you can, top get to the second dump,. you can use forward-space-file mt -f <no-rewind-devicename> fsf but this is horribly slow. You actually need the new DDS stuff with fast-seek which we believe is in 4.1. [stuff about /usr deleted] >A VMS >LAVC shares all the OS files and only creates small directories for system >parameters. Maybe this is also true for Ultrix and I just don't understand >things yet. I'm using Ultrix 4.0 on a DS5000 serving (hopefully) 3 DS2100's. We don't want to be upstaged by VMS, do we ? 8) Yes you can, you need to fool 'setld' but it's a bit complex to put here. (I have got a more efficient method than this, but it's a horrible hack) Simply follow the installation procedure as if you were gonna make a separate /usr area for the clients. When you have got it working, then edit the /etc/fstab to pull the REAL (server) /usr on each of the clients. At this point, you can delete the temporary /usr. Helps if your server is the same sort of thing as your client (we have 5830's serving 2100's. We have to check the files for UWS are all there. The 5830's differ by only *4* files from the UWS distribution. Just find them (do a recursive 'diff' against the temporary /usr) - needle in haystack job) alec -- JANET aem@uk.ac.aber INET: aem@cs.aber.ac.uk or aem@aber.ac.uk UUCP: ...!mcsun!ukc!aber-cs!aem ARPA: aem%uk.ac.aber.cs@nsfnet-relay.ac.uk,aem%uk.ac.aber@nsfnet-relay.ac.uk BITNET: <play around with aem%aber@ukacrl, ok?> SNAIL: Alec Muffett, Computer Unit, Llandinam Building, UCW Campus, Aberystwyth, UK, SY23 3DB