Date: Sun, 31 Oct 1999 23:56:48 -0800 (PST) From: Alfred Perlstein <bright@wintelcom.net> To: Randell Jesup <rjesup@wgate.com> Cc: freebsd-fs@FreeBSD.ORG Subject: Re: journaling UFS and LFS Message-ID: <Pine.BSF.4.05.9910312356070.12797-100000@fw.wintelcom.net> In-Reply-To: <ybuogdehqkc.fsf@jesup.eng.tvol.net.jesup.eng.tvol.net>
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On 1 Nov 1999, Randell Jesup wrote:
> Don <don@calis.blacksun.org> writes:
> >> Most corporate IT managers wouldn't know a filesystem if they were
> >> bitten by one.
> >That is absolutely the case. That is why I can not suggest that
> >softupdates is as good as a journaled file system. The people I deal with
> >at least know the buzzword and they want to make sure that whatever
> >solution they go with will have it.
>
> Question: is the fsck time for softupdates the same as for
> plain UFS (when it needs to fsck, which should be (much) less often,
> if I remember correctly). Even the occasional long-fsck-time can be
> a problem for a high-availability production environment.
>
> Side question: why is it that there are certain errors (inode out
> of range, for example) that fsck barfs on and exits? I actually had to
> go in to the source for fsck and modify it to recover a drive of a
> coworker (with important changes since the last nightly backup). And
> please don't say "just clrinode it and retry". First, if you have
> more than a couple of them this can take a LONG time and lots of
> manual intervention (in this case, hundreds or more likely thousands of
> manual clrinodes would have been needed). Second, if that's the suggested
> resolution, why not make it possible to do from within fsck? If it's
> REALLY dangerous, then warn people about that, or stop the normal
> automatic mode from doing this correction without another option (the
> --i_really_mean_it_i_live_for_danger option). :-)
A url to your patches would be appreciated.
-Alfred
> If I hadn't known filesystems and been able to hack the source,
> the coworker would have lost some important work.
>
> --
> Randell Jesup, Worldgate Communications, ex-Scala, ex-Amiga OS team ('88-94)
> rjesup@wgate.com
>
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