On 4/7/25 16:52, Damien Le Moal wrote: > This patch series implements the new "zloop" zoned block device driver > which allows creating zoned block devices using one regular file per > zone as backing storage. This driver is an alternative to the RUST > rublk driver which provide a similar functionality using ublk > (See https://github.com/ublk-org/rublk.git). However, zloop is far > simpler to use (a single shell command to setup and teardown a device) > and does not have any user space dependencies. These characteristics > make zloop a better solution for integration in test environments (such > as xfstests) using small VMs. Jens, Can we get this queued ? > > zloop and rublk performance is generally comparable. zloop is a bit > faster for large sequential write operations than rublk, while rublk is > faster for small zone-random write IOs. > > The first patch implements the "zloop" zoned block device driver under > drivers/block. The second patch adds documentation for this driver > (overview and usage examples). > > About half of the code of the first patch is from Christoph Hellwig. > > Damien Le Moal (2): > block: new zoned loop block device driver > Documentation: Document the new zoned loop block device driver > > Changes from v2: > - Rebased on 6.15-rc1 > - Some corrections of the documentation > > Changes from v1: > - Corrected Kconfig description in patch 1 (outdated example was shown) > - Added missing request sector update on completion of zone append > request (I had not pushed that...) > - Added reference to the documentation in the kconfig entry in patch 2 > > Damien Le Moal (2): > block: new zoned loop block device driver > Documentation: Document the new zoned loop block device driver > > Documentation/admin-guide/blockdev/index.rst | 1 + > .../admin-guide/blockdev/zoned_loop.rst | 169 ++ > MAINTAINERS | 8 + > drivers/block/Kconfig | 19 + > drivers/block/Makefile | 1 + > drivers/block/zloop.c | 1385 +++++++++++++++++ > 6 files changed, 1583 insertions(+) > create mode 100644 Documentation/admin-guide/blockdev/zoned_loop.rst > create mode 100644 drivers/block/zloop.c > -- Damien Le Moal Western Digital Research
