Hi, I emulate a nullblk0 and want to run a zenfs based on it, but there is an error

[Lsgoose]

• DEV=nullb0
• FUZZ=5
• cat /sys/class/block/nullb0/queue/chunk_sectors
• ZONE_SZ_SECS=262144
• ZONE_CAP=134217728
• BASE_FZ=127506841
• WB_SIZE=255013682
• TARGET_FZ_BASE=255013682
• TARGET_FILE_SIZE_MULTIPLIER=2
• MAX_BYTES_FOR_LEVEL_BASE=510027364
• MAX_BACKGROUND_JOBS=8
• MAX_BACKGROUND_COMPACTIONS=8
• OPEN_FILES=16
• echo deadline
• ./plugin/zenfs/util/zenfs mkfs --zbd=nullb0 --aux_path=/tmp/zenfs_nullb0 --finish_threshold=0 --force
  ZenFS file system created. Free space: 3596 MB
• ./db_bench --fs_uri=zenfs://nullb0 --key_size=16 --value_size=800 --target_file_size_base=255013682 --write_buffer_size=255013682 --max_bytes_for_level_base=510027364 --max_bytes_for_level_multiplier=4 --use_direct_io_for_flush_and_compaction --num=1500000 --benchmarks=fillrandom,overwrite --max_background_jobs=8 --max_background_compactions=8 --open_files=16
  Failed creating env: Invalid argument: Malformed URI: zenfs://nullb0

[yhr]

Hi! Looks like you need to adjust the fs_uri parameter, the format is:

…

--fs_uri=zenfs://dev:<blockdev>

On Fri, Apr 14, 2023 at 5:27 PM Lsgoose ***@***.***> wrote: - DEV=nullb0 - FUZZ=5 - cat /sys/class/block/nullb0/queue/chunk_sectors - ZONE_SZ_SECS=262144 - ZONE_CAP=134217728 - BASE_FZ=127506841 - WB_SIZE=255013682 - TARGET_FZ_BASE=255013682 - TARGET_FILE_SIZE_MULTIPLIER=2 - MAX_BYTES_FOR_LEVEL_BASE=510027364 - MAX_BACKGROUND_JOBS=8 - MAX_BACKGROUND_COMPACTIONS=8 - OPEN_FILES=16 - echo deadline - ./plugin/zenfs/util/zenfs mkfs --zbd=nullb0 --aux_path=/tmp/zenfs_nullb0 --finish_threshold=0 --force ZenFS file system created. Free space: 3596 MB - ./db_bench --fs_uri=zenfs://nullb0 --key_size=16 --value_size=800 --target_file_size_base=255013682 --write_buffer_size=255013682 --max_bytes_for_level_base=510027364 --max_bytes_for_level_multiplier=4 --use_direct_io_for_flush_and_compaction --num=1500000 --benchmarks=fillrandom,overwrite --max_background_jobs=8 --max_background_compactions=8 --open_files=16 Failed creating env: Invalid argument: Malformed URI: zenfs://nullb0 — Reply to this email directly, view it on GitHub <#267>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AADNGODMRQA4DB4T7GAO7TDXBFUG3ANCNFSM6AAAAAAW6SD4AE> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[yhr]

@Lsgoose : Did you try modifying the fs_uri path?