huge data backups

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Hi

I have several partitions (mainly on XFS) with lots of data (the disk
usage is not that big, its arround 150 GB each partition but they contain
LOTS of small files, my guess is some order of millions). My problem is to
find a way to implement a backup policy for this partitions. I have a tape
autoloader LTO-1 with enough capacity for uninterrupted (read, without
manual intervention) backup. I thought of a backup policy like: each month
a full backup, each week a differential backup relative to the last
monthly full backup, each day a incremental backup relative to the last
weekly differential backup. But, because of the huge number of files, it
seems I cannot do it with a simple tar. To gather some statistics about
how many files get modified in 24h I used something like this:

find /partition -mtime 1 -type f > backup-1day.list &

Its beeing running for the last 3 days and still is :-/ (and
backup-1day.list increasing lightly).

In such situation what can I do to get a daily backup of data ?

Thanks!

- --
Mihai RUSU Email: dizzy@roedu.net
GPG : http://dizzy.roedu.net/dizzy-gpg.txt WWW: http://dizzy.roedu.net
"Linux is obsolete" -- AST
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