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From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] central list of bugs [replica]
Date: Mon, 27 Oct 2008 09:26:54 -0400	[thread overview]
Message-ID: <08d1e5e8e3020c289ce793a60942b5c9@quanstro.net> (raw)
In-Reply-To: <d3d8045962d57a9d3f005657cc57b358@quintile.net>

about the replica bug

> There is an errata page on the wiki, however
> I doubt there is anyone looking at this and fixing
> the bugs.
>
> The bottom line is if you discover a bug, and it anoys you,
> fix it (you have the source). If you are feeling friendly
> submit a patch.

in order to pull the history from the old 32-bit fileserver at
Coraid to the new 64-bit diskless one, i fixed the problem
with replica mentioned on the errata page.  there are also
a few bonus go-fast tricks, including copying only the tail
of append-only files.  the old fs was quite slow.  the source
code is in /n/sources/contrib/quanstro/src/replica and the
note how how i migrated history is here
http://www.quanstro.net/plan9/history.pdf

in addition to cphist, i modified applylog and friends to
deal with directories changing to files and a few other
wierd corner cases that a 5-year-old fs with many users
grows.

the go-fast tricks (which were necessary — the migration
still took two weeks) are the reason cphist is not in the
distribution.

- erik




  reply	other threads:[~2008-10-27 13:26 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-27  8:39 [9fans] central list of bugs Rudolf Sykora
2008-10-27 11:13 ` hiro
2008-10-27 12:20 ` Steve Simon
2008-10-27 13:26   ` erik quanstrom [this message]
2008-10-30 15:51 ` Enrico Weigelt
2008-10-31  4:42   ` Uriel
2008-10-31  9:24     ` Rudolf Sykora
2008-10-31 11:04       ` Laurent Malvert
2008-10-31 12:53   ` Eric Van Hensbergen
2008-11-01 18:57     ` Enrico Weigelt
2008-11-01 19:35       ` Eric Van Hensbergen

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