[97116] in RedHat Linux List
Re: experimenting with dump
daemon@ATHENA.MIT.EDU (Ray Curtis)
Sat Oct 31 23:05:09 1998
Date: Sat, 31 Oct 1998 23:04:36 -0500 (EST)
From: Ray Curtis <ray@ray.clark.net>
To: dfox@belvdere.vip.best.com
CC: RedHat List <redhat-list@redhat.com>
In-Reply-To: <199810312207.OAA00810@belvdere.vip.best.com>
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
>>>>> "def" == David E Fox <dfox@belvdere.vip.best.com> writes:
def> Hi, just experimenting here. I'll probably be using tar or
def> (x)bru, they seem easier to understand.
def> But there's always dump :) so if there are people who know
def> more about it than I do, please feel free to respond..
def> At any rate, I did:
def> # dump 0f /dev/nst0 /
def> to start a level 0 dump of the root filesystem. That worked.
def> What happened next, though, when I went to back up /usr (by
def> far the largest, with about 1.3 megs or so allocated to it),
def> dump tells me two strange things:
def> First, it tells me that I'll need 39+ tapes (ouch!). This drive
def> does 2gig uncompressed, 4gig compressed, and I've got roughly
def> 1.9 gigs here (1.6 meg HD + a 345 meg HD).
David, dump thinks you have 2300 foot tape at 1600BPI,
try using the 'B' option and tell it the tape length such as:
dump 0uBf 4096000 /dev/nst0 FILESYSTEM
This should fix your problem,
--
Ray Curtis Unix Programmer/Consultant Curtis Consulting
mailto:ray@ray.clark.net http://www.clark.net/pub/ray
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