On 07/06/2018 07:45 PM, Laurence Oberman wrote:
On Fri, 2018-07-06 at 19:38 +0200, Matias Bjørling wrote:
This series adds support for exposing a zone block device using the
null_blk device driver.
The first patch moves core null_blk data structures to a shared
header
file. The second implements the actual zone support. The patchset
adds
two new options. One to enable the zone interface, and another to
define the size of the zones to expose.
Thanks,
Matias
Matias Bjørling (2):
null_blk: move shared definitions to header file
null_blk: add zone support
Documentation/block/null_blk.txt | 7 ++
drivers/block/Makefile | 5 +-
drivers/block/null_blk.c | 124 ++++++++++++-----------------
---
drivers/block/null_blk.h | 108 ++++++++++++++++++++++++++++
drivers/block/null_blk_zoned.c | 149
+++++++++++++++++++++++++++++++++++++++
5 files changed, 315 insertions(+), 78 deletions(-)
create mode 100644 drivers/block/null_blk.h
create mode 100644 drivers/block/null_blk_zoned.c
Thank you for this will be very useful.
I will test it to add value.
I dont know the code well enough to review it
Regards
Laurence
Great.
For fio, you can use the zone support here:
https://github.com/bvanassche/fio
It is in the process of being upstreamed.
Also, you'll need the latest libzbc/util-linux (blkzone) if you want to
report zones. A bug was fixed around detection of the drive.
https://github.com/hgst/libzbc
https://github.com/karelzak/util-linux
