grr@cbmvax.UUCP (George Robbins) (08/03/89)
In article <11376@trlsasb.oz> gilmour@trlsasb.oz (John Gilmour) writes: > We've been experiencing difficulities with file positioning when trying to > restore files from an Exabyte connected to a vax3600 running ULTRIX 2.2. > The restore program can't seem to position itself correctly on > a dumpset that is positioned past the 3rd dumpset to have been written > to the tape; for example when i do a "/etc/restore ivfs /dev/nrmt1h 5" it > either tells me to mount a second volume or returns with an i/o error. This is probably a controller/emulation problem, rather than an Ultrix problem. How is the Exabyte drive attached to the 3600? You might try using the "mt fsf" command as an alternate way of positioning the tape and see if that works or results in the same kinds of errors. If this fails maybe try "dd if=/dev/rmt.. of=/dev/null files=n" to "read" the prior files as way of skipping... We had similar problems on an Exabyte and eventually had to give up trying to write multi-file tapes. Someone I think was hinting at writing multiple tape marks between files. This might help, but I think it might make getting to the right file on a restore a rather interesting venture. -- George Robbins - now working for, uucp: {uunet|pyramid|rutgers}!cbmvax!grr but no way officially representing arpa: cbmvax!grr@uunet.uu.net Commodore, Engineering Department fone: 215-431-9255 (only by moonlite)
gilmour@trlsasb.oz (John Gilmour) (08/04/89)
We've been experiencing difficulities with file positioning when trying to restore files from an Exabyte connected to a vax3600 running ULTRIX 2.2. The restore program can't seem to position itself correctly on a dumpset that is positioned past the 3rd dumpset to have been written to the tape; for example when i do a "/etc/restore ivfs /dev/nrmt1h 5" it either tells me to mount a second volume or returns with an i/o error. Any advice? Thanks, John Gilmour, Telecom Research, 22 Winterton Rd, Clayton, 3168, Australia. email: gilmour@trlsasb.oz.au