Re: [Dump-users] RE: Dump HOWTO

[Stelian P. <st...@ca...>]

On Tue, 27 Jun 2000, Bernhard Erdmann wrote:

> Stelian Pop wrote:

> > Dump, by default, uses a 10k blocksize.
> 
> The default blocksize of dump isn't mentioned in the man page.

You're right. I'll correct that.

> > Try to run a /sbin/dump 0ab 32 /tmp/. Maybe it helps...
> 
> I already tried it, didn't help then, if I remember correctly. Now it
> works. ??

Well, I don't remember having changed something about that for a long
time... Maybe you tried it with a very old version of dump/restore,
and haven't tried since then again ?

> Dump with "-b 32" works well, thanks for the hint. Seems to eliminate
> the need for "| dd obs=32k of=$TAPE".

Good.

> I wonder why restore says "Tape block size is 32". You told me, dump
> used 10k blocks and the tape drive is set to variable blocksize. So why
> 32KB blocks?

Well, I'll take a look at the code. But restore tries figure out the
good blocksize by trying several ones. For some reasons, it believes
that 32k is your blocksize, which is obviously wrong...

> Let's have a try:
> # /sbin/restore rb 10
> 
> With "-b 10", restore works well reading a tape witten by "dump 0a
> /tmp". Maybe a bug in restore to figure out the tape's blocksize?

Sure. I'll take a look and will contact you later if I cannot reproduce
this here...

Stelian.
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