in 3.36, randwrite in zbd zonemode can only write to 128 zones which lead to high iops in randwrite

[Yi]

Please acknowledge the following before creating a ticket

• I have read the GitHub issues section of REPORTING-BUGS.

Description of the bug:
in 3.36, randwrite in zbd zonemode can only write to 128 zones which lead to high iops in randwrite

Environment: 5.10.134-13.an8.x86_64

fio version: 3.36

Reproduction steps

fio --name=zbc --filename=/dev/sdr --direct=1 --zonemode=zbd --offset=969z --numjobs=4 --group_reporting=1 --runtime=30 --ioengine=libaio --iodepth=4 --rw=randwrite --bs=256K

[Yi]

by using zbc_report_zones command, it turns out that there are only 128 implicit open zones were written