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| author | Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com> | 2020-07-17 18:36:32 +0900 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-07-21 09:17:29 -0600 |
| commit | 236d23a86d6e3c14b700496e0f196f88513a5f3e (patch) | |
| tree | fc96baccbcc54a66e678efbf15276696e8015d2b /engines/libzbc.c | |
| parent | d13596b225baf61425a9ca92b0583fc3fa97765d (diff) | |
| download | fio-236d23a86d6e3c14b700496e0f196f88513a5f3e.tar.gz fio-236d23a86d6e3c14b700496e0f196f88513a5f3e.tar.bz2 | |
zbd: Support zone capacity smaller than zone size
NVMe ZNS specification defines zone capacity. The report zone interface
of Linux kernel supports it. This patch adds support for this new
interface.
Modify configure to check availability of BLK_ZONE_REP_CAPACITY flag as
well as blkzoned.h header only when target OS is Linux. If this flag is
defined and set in the report zone, all sectors from the zone capacity up
to the zone size are not accessible. Prevent read and write operations to
these sectors by modifying zbd_adjust_block(). Of note is that this skips
the region between zone capacity and zone size then reduces total I/O
bytes of sequential workloads.
Introduce helper functions zbd_zone_end() and zbd_zone_capacity_end() to
improve readability of zone limit check code.
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Aravind Ramesh <aravind.ramesh@wdc.com>
Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com>
Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'engines/libzbc.c')
| -rw-r--r-- | engines/libzbc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/engines/libzbc.c b/engines/libzbc.c index fdde8ca6..4b900233 100644 --- a/engines/libzbc.c +++ b/engines/libzbc.c @@ -235,6 +235,11 @@ static int libzbc_report_zones(struct thread_data *td, struct fio_file *f, zbdz->start = zones[i].zbz_start << 9; zbdz->len = zones[i].zbz_length << 9; zbdz->wp = zones[i].zbz_write_pointer << 9; + /* + * ZBC/ZAC do not define zone capacity, so use the zone size as + * the zone capacity. + */ + zbdz->capacity = zbdz->len; switch (zones[i].zbz_type) { case ZBC_ZT_CONVENTIONAL: |