gordon@prls.UUCP (Gordon Vickers) (12/12/90)
Looks like I will be getting rid of my VAX 11/750 and
getting a VAX 8350. The 8350 will be shared with another
group who is loosing their VAX 11/780.
While I routinely use tar and dump/restore I really need
to know more about them to make this move succesfull. I feel
more secure with tar but restore has a nice interactive feature.
I am guessing that I probably don't want to use dump since
the new system will have differant filesystem sizes, block sizes,
and inode/size ratios, etc. .
One system is running Ultrix 2.0-1, the other is running
Ultrix 3.2 and the 8350 will hopefully have 4.1 before we start
shuffling files to it from the other two systems.
I am currently planning to have a full level 0 dump made of
each system (as a backup) and then dozons of tar tapes containing
the application programs from each system. Of course there are
also a lot of system related files that need to be "merged" (probably
by copying them to differant filenames before tar'ing then editing
them together afterwards)
One real concern is the possiablity of having to retrieve a few
files from the dump tapes. I am confused about a blurb on the manual
page for restore:
" RESTRICTIONS
.................... You must do a level 0 dump after
a full restore. Becouse RESTORE runs in user code,
it has no control over inode allocations; thus, you
must do a full restore to get a new set of directories
that reflects the new inode numbering, even though the
contents of the fiels are unchanged. "
If I were to use restore to retrieve files that I/we forgot
to tar, then I certainly haven't done a full restore. Must I then
be concerned about the inode allocations ? Is the restore going
to work if the filesystem on tape is alot differant then the new
one on disk ?
Thank you for any assistance;
Gordon Vickers 408/991-5370 {mips,pyramid|philabs}!prls!gordon
Signetics in Sunnyvale,Ca (USA)
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