From: Venkatesh Srinivas <me@acm.jhu.edu>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] Hardware for Plan9
Date: Mon, 11 Jan 2010 12:29:37 -0500 [thread overview]
Message-ID: <f75780241001110929j2ab07e79r66bd9a135dbbe596@mail.gmail.com> (raw)
In-Reply-To: <01e65e0d82a93d02f36fe3c98b76ae41@coraid.com>
On Mon, Jan 11, 2010 at 12:24 PM, erik quanstrom <quanstro@coraid.com> wrote:
>> Venti deals with incompletely written blocks; the arenas and index structures
>> are still workable. The situation is even recoverable - a proxy could notice
>> that one of the backends failed to return a read, so it rewrite the data from
>> an other copy (which it can verify) to the failed one.
>
> what are you using as a venti proxy? or is this more theoretical?
When I ran this on real h/w, I used Inferno's vcache, which works
as-is. I have a binary (but have lost the source) for a Plan 9
equivalent, but cooking one up again should take only a few hours; its
job is really simple.
> how do you protect against lossage in the fossil cache?
I don't, any more than fossil+fs does.
> - erik
-- vs
next prev parent reply other threads:[~2010-01-11 17:29 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-11 8:27 Wolfgang Kunz
2010-01-11 13:01 ` Steve Simon
2010-01-11 14:07 ` Venkatesh Srinivas
2010-01-11 15:22 ` erik quanstrom
2010-01-11 16:54 ` Venkatesh Srinivas
2010-01-11 17:24 ` erik quanstrom
2010-01-11 17:29 ` Venkatesh Srinivas [this message]
2010-01-11 13:51 ` erik quanstrom
2010-01-11 16:43 ` Steve Simon
2010-01-11 17:26 ` erik quanstrom
-- strict thread matches above, loose matches on Subject: below --
2010-01-13 6:46 Wolfgang Kunz
2010-01-11 19:47 Wolfgang Kunz
2010-01-11 20:05 ` erik quanstrom
2010-01-11 17:52 Wolfgang Kunz
2010-01-11 18:00 ` Frederik Caulier
2010-01-11 20:31 ` Akshat Kumar
2010-01-13 12:49 ` matt
2010-01-13 13:28 ` erik quanstrom
2010-01-13 18:16 ` Akshat Kumar
2010-01-11 18:14 ` erik quanstrom
2010-01-11 8:33 Wolfgang Kunz
2010-01-11 13:41 ` erik quanstrom
2010-01-11 19:50 ` Federico G. Benavento
2010-01-11 8:24 Wolfgang Kunz
2010-01-11 13:39 ` erik quanstrom
2010-01-10 13:39 Wolfgang Kunz
2010-01-10 14:06 ` Steve Simon
2010-01-10 15:59 ` erik quanstrom
2010-01-10 16:14 ` Federico G. Benavento
2004-02-16 15:11 [9fans] Hardware for plan9 Ryan
2004-02-16 15:39 ` matt
2004-02-16 15:57 ` David Cantrell
2004-02-16 15:59 ` Jim Choate
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