This series extend support for zonemode=zbd beyond Linux only and as is allows the use of this zonemode on any platform with regular block devices. The same also applies to Linux systems that do not have zoned block device support (e.g. enterprise distributions with kernels version lower than 4.10). For zoned block device support, Linux implementation is preserved. Other OS specific code can be added with automatic configuration with the configure script to add zoned block device support. Additionally, ioengine operations are updated to allow an IO engine to provide implementations for the zone operations needed to support zoned block devices. This is convenient for cases where the system OS/kernel does not have any support implementation available. Finally, the libzbc IO engine is introduced to support zoned block devices on Linux distributions without native kernel level support (E.g. RedHat/CentOS). SImilarly to the sg ioengine, this new IO engine usesi passthrough commands implemeted by libzbc API to directly access SMR drives. Comments are as always welcome. Damien Le Moal (2): fio: Generalize zonemode=zbd ioengines: Add zoned block device operations Dmitry Fomichev (2): fio: Introduce libzbc IO engine t/zbd: Add support for libzbc IO engine tests Makefile | 9 +- configure | 36 ++- engines/libzbc.c | 422 ++++++++++++++++++++++++++++++++++++ engines/skeleton_external.c | 43 ++++ fio.1 | 6 + fio.h | 2 - io_u.h | 2 - ioengines.h | 9 +- options.c | 3 +- oslib/blkzoned.h | 49 +++++ oslib/linux-blkzoned.c | 219 +++++++++++++++++++ t/run-fio-tests.py | 2 +- t/zbd/functions | 38 +++- t/zbd/test-zbd-support | 221 ++++++++++++------- zbd.c | 396 ++++++++++++++++----------------- zbd.h | 70 +----- zbd_types.h | 57 +++++ 17 files changed, 1219 insertions(+), 365 deletions(-) create mode 100644 engines/libzbc.c create mode 100644 oslib/blkzoned.h create mode 100644 oslib/linux-blkzoned.c create mode 100644 zbd_types.h -- 2.25.1
