From: Pavel Machek <pavel@ucw.cz>
To: Reindl Harald <h.reindl@thelounge.net>
Cc: linux-ext4@vger.kernel.org,
kernel list <linux-kernel@vger.kernel.org>,
tytso@mit.edu, kent.overstreet@gmail.com,
linux-bcache@vger.kernel.org
Subject: Re: bcache with existing ext4 filesystem
Date: Mon, 24 Jul 2017 21:15:48 +0200 [thread overview]
Message-ID: <20170724191548.GA32425@amd> (raw)
In-Reply-To: <64c810cf-a95c-f862-f25a-ebd7419b2632@thelounge.net>
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On Mon 2017-07-24 21:08:16, Reindl Harald wrote:
>
>
> Am 24.07.2017 um 20:57 schrieb Pavel Machek:
> >Would it be feasible to run bcache (write-through) with existing ext4
> >filesystem?
> >
> >I have 400GB of data I'd rather not move, and SSD I could use for
> >caching. Ok, SSD is connecte over USB2, but I guess it is still way
> >faster then seeking harddrive on random access
>
> i doubt that seriously - USB2 has a terrible latency
Well.. if that's too slow, I can get SSD M.2; plus bcache docs says
that combination works.
And... if you ever tried to do git diff while git checkout is running
on spinning rust... spinning rust has awful parameters when idle, and
it only gets worse when loaded :-(.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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next prev parent reply other threads:[~2017-07-24 19:15 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-24 18:57 bcache with existing ext4 filesystem Pavel Machek
2017-07-24 19:08 ` Reindl Harald
2017-07-24 19:15 ` Pavel Machek [this message]
2017-07-24 19:27 ` Theodore Ts'o
2017-07-24 20:04 ` Pavel Machek
2017-07-25 4:51 ` Theodore Ts'o
2017-07-25 6:43 ` Pavel Machek
2017-07-25 10:32 ` Vojtech Pavlik
2017-07-25 11:12 ` Pavel Machek
2017-07-25 16:10 ` Theodore Ts'o
2017-07-25 18:13 ` Eric Wheeler
2017-07-25 22:02 ` Pavel Machek
2017-07-26 17:41 ` Eric Wheeler
2017-07-26 18:59 ` Austin S. Hemmelgarn
2017-07-26 19:16 ` Eric Wheeler
2017-07-26 20:01 ` Pavel Machek
2017-07-25 13:46 ` Pavel Machek
2017-07-25 18:02 ` Theodore Ts'o
2017-07-25 20:55 ` Pavel Machek
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