From: Jeff Moyer <jmoyer@redhat.com>
To: Damien.LeMoal@wdc.com, axboe@kernel.dk, linux-block@vger.kernel.org
Cc: bgurney@redhat.com
Subject: [PATCH 0/2][RFC] block: default to deadline for SMR devices
Date: Fri, 25 May 2018 17:14:30 -0400 [thread overview]
Message-ID: <20180525211432.20359-1-jmoyer@redhat.com> (raw)
Bryan Gurney reported I/O errors when using dm-zoned with a host-managed
SMR device. It turns out he was using CFQ, which is the default.
Unfortunately, as of v4.16, only the deadline schedulers work well with
host-managed SMR devices. This series aatempts to switch the elevator
to deadline for those devices.
NOTE: I'm not super happy with setting up one iosched and then
immediately tearing it down. I'm open to suggestions on better ways
to accomplish this goal.
[PATCH 1/2] block: __elevator_change: add try_loading parameter
[PATCH 2/2] block: default to deadline for host-managed SMR devices
next reply other threads:[~2018-05-25 21:14 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-25 21:14 Jeff Moyer [this message]
2018-05-25 21:14 ` [PATCH 1/2] block: __elevator_change: add try_loading parameter Jeff Moyer
2018-05-25 21:14 ` [PATCH 2/2] block: default to deadline for host-managed SMR devices Jeff Moyer
2018-05-25 22:04 ` [PATCH 0/2][RFC] block: default to deadline for " Jens Axboe
2018-05-25 22:18 ` Jeff Moyer
2018-05-26 4:01 ` Jens Axboe
2018-05-29 12:14 ` Bryan Gurney
2018-05-30 6:22 ` Damien Le Moal
2018-05-30 8:47 ` Christoph Hellwig
2018-05-31 5:36 ` Damien Le Moal
2018-05-30 13:45 ` Bryan Gurney
2018-05-30 8:49 ` Christoph Hellwig
2018-05-30 14:22 ` Jens Axboe
2018-05-30 15:06 ` Jeff Moyer
2018-05-30 15:17 ` Jens Axboe
2018-05-30 15:45 ` Jeff Moyer
2018-05-30 15:52 ` Jens Axboe
2018-05-31 3:16 ` Damien Le Moal
2018-05-31 3:04 ` Damien Le Moal
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