Re: bcache with existing ext4 filesystem

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To: Pavel Machek <pavel@xxxxxx>, linux-ext4@xxxxxxxxxxxxxxx, kernel list <linux-kernel@xxxxxxxxxxxxxxx>, tytso@xxxxxxx, kent.overstreet@xxxxxxxxx, linux-bcache@xxxxxxxxxxxxxxx
Subject: Re: bcache with existing ext4 filesystem
From: Reindl Harald <h.reindl@xxxxxxxxxxxxx>
Date: Mon, 24 Jul 2017 21:08:16 +0200
In-reply-to: <20170724185703.GA31422@amd>
Organization: the lounge interactive design
References: <20170724185703.GA31422@amd>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1



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

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