linux-kernel - Re: [GIT] Bcache version 12

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Message-ID: <20111006175808.GA9886@atrey.karlin.mff.cuni.cz>
Date:	Thu, 6 Oct 2011 19:58:08 +0200
From:	Pavel Machek <pavel@....cz>
To:	Kent Overstreet <kent.overstreet@...il.com>
Cc:	Pekka Enberg <penberg@...helsinki.fi>,
	linux-bcache@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, rdunlap@...otime.net,
	axboe@...nel.dk, akpm@...ux-foundation.org, neilb@...e.de
Subject: Re: [GIT] Bcache version 12

Hi!

> It can cache filesystem metadata - it can cache anything.
> 
> Because bcache has its own superblock (much like md), it can guarantee
> that bcache devices are consistent; this is particularly important if
> you want to do writeback caching. You really don't want to accidently
> mount a filesystem that you were doing writeback caching on without the
> ache - bcache makes it impossible to do so accidently.
> 
> Is any of that useful?

I guess some kind of benchmark would be nice....? I don't know what
fair workload for this is. System bootup? Kernel compile after reboot?

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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