"Jensen, Gary" wrote:
>
> We were wondering if there are any advantages/disadvantages when using HP
> TurboStore with the INTER and COMPRESS options when backing up to tape.

:RESTOREing HFS files from an ;INTER backup has some major problems due to the
scrambled file order that ;INTER produces.

For example, let's say you need to restore a large HFS directory tree that
doesn't already exist on disk.  Let's say the tree looks something like this:

/dir1
/dir1/file1
/dir1/file2
/dir1/dir2
/dir1/dir2/file3

Now let's say that ;INTER has written these to tape in this order (hey, it
could happen):

/dir1/dir2/file3
/dir1/file1
/dir1/dir2
/dir1/file2
/dir1

What happens if you want to :RESTORE /dir1/ (recursively)?  The first file on
the store tape is /dir1/dir2/file3.  Now at this point /dir1 doesn't exist, so
:RESTORE will have to create it for you if you specified ;CREATE.  But you end
up with default POSIX permissions and the owner/group ID of the user doing the
:RESTORE.  This could very well break your applications which depended upon the
original attributes!

I discovered this when I tried using :STORE-to-disk and :RESTORE ACCT= to do
some HFS account cloning/renaming.  The directories were very impressively
screwed up in the new account.  I had to purge the new account and start over
using tar instead of :STORE/:RESTORE.

- Mark B.