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
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