format of blobs ? backup blobs ?

When upgrading from 6.5 to 7.0 we backuped all data with pg_dump and
so we lost our blobs. I just have the xinv and xinx-files from a
file-backup. The blobs are stored in the xinvxxxxx-files, but there is
a long leading header. Can anyone point me to the exact format of this
files, so I can write a script to restore the blobs ?

second question: how do you guys deal with blobs when
upgrading/backuping/restoring ?

thanx,
peter

--
mag. peter pilsl

phone: +43 676 3574035
fax : +43 676 3546512
email: pilsl(at)goldfisch(dot)at
sms : pilsl(at)max(dot)mail(dot)at

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