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- Newsgroups: comp.sys.hp
- Path: sparky!uunet!mcsun!news.funet.fi!hydra!klaava!klaava!hkarhune
- From: hkarhune@hydra.Helsinki.FI (Heikki Karhunen)
- Subject: Backing up several HP's & GNU Tar
- Message-ID: <HKARHUNE.93Jan12172806@hydra.Helsinki.FI>
- Sender: news@klaava.Helsinki.FI (Uutis Ankka)
- Organization: Department of Theoretical Physics, University of Helsinki,
- Finland
- Distribution: comp.sys.hp
- Date: Tue, 12 Jan 1993 15:28:06 GMT
- Lines: 51
-
-
- First some details.
-
- In our configuration we have a 720 serving two 705s with about 2 Gb of
- disk, a standalone 720 with 2.6 Gb of disk and an 345 serving a 340
- and 400dl with 660 Mb of disk.
-
- Now, we also have a compressing DAT (HP35480A for those who want to
- know).
-
- As the specs say you can squeeze upto 8 Gb into a DAT tape with one of
- these beauties. Ok, we'd really like to do our backups to one tape.
- Easy, ehh? No way, buster....
-
- The problem arises from the fact that fbackup insists on starting the
- backup from the beginning of the tape, i.e. if the tape is not rewound
- when fbackup gets its' grubby hands on the device, fbackup rewinds it.
- Thus you cannot put but one fileset per tape.
-
- As I inquired after some tools with which I could do this suddenly so
- complicated chore, I was recommended HP's Omniback. But I don't want
- to buy Omniback! It'd be completely perfect for this little job, but
- it'd also cost more than we'd like to spend.
-
- Well, I tried some native UNIX tools (find, cpio, dd, remsh, add some
- piping and obfuscate) and managed to get a full backup from each and
- every disk in the system to one tape. The only problem with this was
- that it took some 12 hours to complete...
-
- At the moment I am trying out GNU Tar (version 1.11.11). The problem
- with *that* is its inability to understand HP's cdf-files (Context
- Dependent Files). I am trying to add support for cdfs to it, but so
- far I have met with some resistance (I can make it archive them silly
- buggers, but they won't come out!).
-
- I'd like to know if someone somewhere has met up with this kind of
- problems and solved them. I'd also appreciate it if someone has
- already taught GNU Tar to understand about cdfs and could give me some
- diffs.
-
- Thanks in advance,
-
- Heikki
-
- /-----------------------------+-----------------------------------------\
- | hkarhune@hydra.helsinki.fi | There is always a job for a theoretical |
- | Heikki.Karhunen@helsinki.fi | physicist -- at least in theory. |
- \-----------------------------+-----------------------------------------/
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