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From: john@xanth.UUCP (John Owens)
Newsgroups: comp.unix.questions
Subject: Re: File system problems
Message-ID: <1722@xanth.UUCP>
Date: Tue, 28-Jul-87 13:22:35 EDT
Article-I.D.: xanth.1722
Posted: Tue Jul 28 13:22:35 1987
Date-Received: Thu, 30-Jul-87 02:26:26 EDT
References: <8467@brl-adm.ARPA> <1052@mind.UUCP>
Organization: Old Dominion University, Norfolk Va.
Lines: 22

In article <1052@mind.UUCP>, barry@mind.UUCP (Barry Lustig) writes:
> In article <8467@brl-adm.ARPA> KFL@AI.AI.MIT.EDU (Keith F. Lynch) writes:
> >He has also said that after using doing a restore of a zero level dump,
> >it is necessary to immediately do another zero level dump or the file
> >system will get hosed again.  Is this really needed?  If so, can it be
> >done overnight, to /dev/null?
> 
> And even more garbage.

Your other comments are good, but in this case, the Sun person was
somewhat correct, even if he didn't really know what he was talking
about.  The filesystem certainly won't get "hosed" if you don't dump
it, but future incremental dumps will.  If you do a complete
filesystem restoration (level 0 and any incrementals), it's good
practice to do a fresh level 0 dump.  You *must* do this before any
future incrementals on that filesystem.  If you know the next
scheduled backup of that filesystem is a level 0 dump, it's safe not
to worry about it.
-- 
John Owens		Old Dominion University - Norfolk, Virginia, USA
john@ODU.EDU		old arpa: john%odu.edu@RELAY.CS.NET
+1 804 440 4529		old uucp: {decuac,harvard,hoptoad,mcnc}!xanth!john