Date: Mon, 27 Mar 1995 10:01:16 -0800 From: pascal@netcom.com (Richard A Childers) To: guido@IAEhv.nl, questions@FreeBSD.org Subject: Re: question about dump Message-ID: <199503271801.KAA11109@netcom10.netcom.com>
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"What happens when I do a level 0 dump on a system that is not in single
user mode?"
If the filesystem is reasonably quesient (sp?) then you won't have any
problems at all ( with the possible exception of /tmp and /var files ).
"More specifically: if files/directories get deleted after dump has made
its dump table?"
It will create a mildly inconsistent dump image but not an unusable dump
image. ( Depends upon the directories and files you delete, of course. )
In any case, if you are restoring your 'root' filesystem from standalone
mode ( and this is a topic I'd like to see discussed more - disaster
recovery procedures for FreeBSD, the making of standalone diskettes and
the like ) you'll be wantin' to fcsk it afterwards, to clear up any last
bits of inconsistency and make the data structure ( if only for a few
sweet minutes ) pristine, and untainted by the passage of data ...
This is based upon administering thousands of BSD dumps over ten years of
different sites, media, block sizes and densities ... have to note that
there are some things about FreeBSd that are a little wierd ( like ft(1) )
that make behaviors a little hard to predict.
( Not that ft(1) doesn't do an excellent job ... just that it breaks the
Unix paradigm, which dictates that devices should be accessible as files
in the /dev directory, IE, /dev/rft0. )
-- richard
Pontius Pilate was politically correct. So was Benedict Arnold.
So was Vidkun Quisling ... and so was Adolph Hitler. |-:
richard childers san francisco, california pascal@netcom.com
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