From: Kai Krakow <hurikhan77@gmail.com>
To: linux-bcache@vger.kernel.org
Subject: Reasoning of exposing queue/rotational=0
Date: Thu, 4 May 2017 23:24:57 +0200 [thread overview]
Message-ID: <20170504232457.13c269c0@jupiter.sol.kaishome.de> (raw)
Hello!
What's the reasoning for exposing bcache devices as being
non-rotational? Currently, it fools btrfs into using ssd allocation
scheme on the underlying harddisks which isn't really what I expected
to get. So I used a udev rule to change this:
ACTION=="add|change", KERNEL=="bcache*", ATTR{queue/rotational}="1"
Wouldn't it make more sense to set this to the same value as the
underlying backing device by default?
Because in reality, the bcache is still what the backing device is: A
rotational medium. A cache doesn't make this non-rotational.
Thoughts?
--
Regards,
Kai
Replies to list-only preferred.
next reply other threads:[~2017-05-04 21:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-04 21:24 Kai Krakow [this message]
2017-05-05 16:11 ` Reasoning of exposing queue/rotational=0 Coly Li
2017-05-05 17:44 ` Vojtech Pavlik
2017-05-05 18:23 ` Kai Krakow
2017-05-05 19:02 ` Vojtech Pavlik
2017-05-05 19:14 ` Kai Krakow
2017-05-09 18:11 ` Eric Wheeler
2017-05-10 20:18 ` Kai Krakow
2017-05-05 19:01 ` Kai Krakow
2017-05-05 18:04 ` Kai Krakow
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