dave@uwvax.ARPA (07/19/84)
We have used tar (or a subset of tar actually, it generates tar-tapes)
for incrementals since 4.1 times. The only problem with the scheme
suggested is the 'find'. Find is amazingly slow! I wrote a new find
program which runs through the inode list on the filesystems to be
dumped (gleened from fstab), makes a bitmap of the files to be dumped
and then does a fast transversal of the directory structure for the
names ('sounds like dump' you say? Yes, that's where I got the idea).
This takes about 10 mins when searching through 1++ gig. The
differences to tar are that it reads the files it dumps from a file and
can dump to remote tapedrives (only under 4.2). We also made a
complementary restore program which gives the ability to restore a file
to places other than where they originated. This all runs very well
(except when the tapedrives die).
Now if I could only get the incremental dump history to work right.....
--
Dave Cohrs @ wisconsin
...!{allegra,heurikon,ihnp4,seismo,ucbvax,uwm-evax}!uwvax!dave
dave@wisc-rsch.arpa