From: Hannes Reinecke <hare@suse.de>
To: Damien LeMoal <damien.lemoal@wdc.com>
Cc: dm-devel@redhat.com, Mike Snitzer <snitzer@redhat.com>
Subject: [PATCH RFC 00/12] dm-zoned: multi-device support
Date: Fri, 22 May 2020 17:38:49 +0200 [thread overview]
Message-ID: <20200522153901.133375-1-hare@suse.de> (raw)
Hi all,
on the risk of boring you to death, here's yet another RFC to update
dm-zoned. As it has seen only light testing and has some areas which
need to be improved I'd consider it RFC material.
I'm just putting it out now to get some feedback and get it ready for
the next merge window.
So, this patchset:
- Converts the zone array to using xarray for better scalability
- Separate out shared structures into per-device structure
- Lift the restriction of 2 devices to handle an arbitrary number
of drives.
With this patchset I'm seeing a performance increase for writes from
an average of 150MB/s (with 2 drives) to 200MB/s (with 3 drives).
Hannes Reinecke (12):
dm-zoned: add debugging message for reading superblocks
dm-zoned: convert to xarray
dm-zoned: use on-stack superblock for tertiary devices
dm-zoned: secondary superblock must reside on the same devices than
primary superblock
dm-zoned: add device pointer to struct dm_zone
dm-zoned: add metadata pointer to struct dmz_dev
dm-zoned: add a 'reserved' zone flag
dm-zoned: move random and sequential zones into struct dmz_dev
dm-zoned: improve logging messages for reclaim
dm-zoned: support arbitrary number of devices
dm-zoned: round-robin load balancer for reclaiming zones
dm-zoned: per-device reclaim
drivers/md/dm-zoned-metadata.c | 430 ++++++++++++++++++++++++-----------------
drivers/md/dm-zoned-reclaim.c | 85 ++++----
drivers/md/dm-zoned-target.c | 172 ++++++++++-------
drivers/md/dm-zoned.h | 70 ++++---
4 files changed, 454 insertions(+), 303 deletions(-)
--
2.16.4
next reply other threads:[~2020-05-22 15:38 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-22 15:38 Hannes Reinecke [this message]
2020-05-22 15:38 ` [PATCH 01/12] dm-zoned: add debugging message for reading superblocks Hannes Reinecke
2020-05-25 1:54 ` Damien Le Moal
2020-05-22 15:38 ` [PATCH 02/12] dm-zoned: convert to xarray Hannes Reinecke
2020-05-25 2:01 ` Damien Le Moal
2020-05-25 7:40 ` Hannes Reinecke
2020-05-22 15:38 ` [PATCH 03/12] dm-zoned: use on-stack superblock for tertiary devices Hannes Reinecke
2020-05-25 2:09 ` Damien Le Moal
2020-05-25 7:41 ` Hannes Reinecke
2020-05-26 8:25 ` Hannes Reinecke
2020-05-26 8:48 ` Damien Le Moal
2020-05-22 15:38 ` [PATCH 04/12] dm-zoned: secondary superblock must reside on the same devices than primary superblock Hannes Reinecke
2020-05-25 2:10 ` Damien Le Moal
2020-05-22 15:38 ` [PATCH 05/12] dm-zoned: add device pointer to struct dm_zone Hannes Reinecke
2020-05-25 2:15 ` Damien Le Moal
2020-05-25 7:42 ` Hannes Reinecke
2020-05-22 15:38 ` [PATCH 06/12] dm-zoned: add metadata pointer to struct dmz_dev Hannes Reinecke
2020-05-25 2:17 ` Damien Le Moal
2020-05-22 15:38 ` [PATCH 07/12] dm-zoned: add a 'reserved' zone flag Hannes Reinecke
2020-05-25 2:18 ` Damien Le Moal
2020-05-22 15:38 ` [PATCH 08/12] dm-zoned: move random and sequential zones into struct dmz_dev Hannes Reinecke
2020-05-25 2:27 ` Damien Le Moal
2020-05-25 7:47 ` Hannes Reinecke
2020-05-22 15:38 ` [PATCH 09/12] dm-zoned: improve logging messages for reclaim Hannes Reinecke
2020-05-25 2:28 ` Damien Le Moal
2020-05-22 15:38 ` [PATCH 10/12] dm-zoned: support arbitrary number of devices Hannes Reinecke
2020-05-25 2:36 ` Damien Le Moal
2020-05-25 7:52 ` Hannes Reinecke
2020-05-25 8:22 ` Damien Le Moal
2020-05-22 15:39 ` [PATCH 11/12] dm-zoned: round-robin load balancer for reclaiming zones Hannes Reinecke
2020-05-25 2:42 ` Damien Le Moal
2020-05-25 7:53 ` Hannes Reinecke
2020-05-22 15:39 ` [PATCH 12/12] dm-zoned: per-device reclaim Hannes Reinecke
2020-05-25 2:46 ` Damien Le Moal
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