[SPDK] Re: Set SPDK log level and log flags

Thanks Gang for answering my question.

I had tried setting log level and log print level to "DEBUG" but I did not see effect. That's why I asked if the debug build is needed.

Do you know the syntax setting log flags?

Thanks,
-Wenhua

On 4/21/20, 11:20 PM, "Cao, Gang" <gang.cao(a)intel.com> wrote:

    I think it is needed to have the Debug build first and then change the log level for Notice and Debug.

    -----Original Message-----
    From: Wenhua Liu <liuw(a)vmware.com> 
    Sent: Wednesday, April 22, 2020 14:09
    To: spdk(a)lists.01.org
    Subject: [SPDK] Set SPDK log level and log flags

    Hi

    Looking at SPDK log related command options in scripts/rpc.py,  I see the following command options

        log_set_flag (set_log_flag)

                            set log flag

        log_clear_flag (clear_log_flag)

                            clear log flag

        log_get_flags (get_log_flags)

                            get log flags

        log_set_level (set_log_level)

                            set log level

        log_get_level (get_log_level)

                            get log level

        log_set_print_level (set_log_print_level)

                            set log print level

        log_get_print_level (get_log_print_level)

                            get log print level

    Running log_get_flags, I see the following log flags:

    ~/spdk/spdk$ sudo scripts/rpc.py log_get_flags

    {

      "aio": false,

      "app_config": false,

      "bdev": false,

      "bdev_ftl": false,

      "bdev_malloc": false,

      "bdev_null": false,

      "bdev_nvme": false,

      "bdev_ocssd": false,

      "bdev_raid": false,

      "bdev_raid0": false,

      "blob": false,

      "blob_rw": false,

      "blobfs": false,

      "blobfs_rw": false,

      "copy_ioat": false,

      "ftl_core": false,

      "ftl_init": false,

      "gpt_parse": false,

      "ioat": false,

      "json_util": false,

      "log": false,

      "lvol": false,

      "lvolrpc": false,

      "nbd": false,

      "net": false,

      "notify_rpc": false,

      "nvme": false,

      "nvmf": false,

      "nvmf_tcp": false,

      "opal": false,

      "raidrpc": false,

      "reactor": false,

      "rpc": false,

      "rpc_client": false,

      "thread": false,

      "trace": false,

      "vbdev_delay": false,

      "vbdev_gpt": false,

      "vbdev_lvol": false,

      "vbdev_opal": false,

      "vbdev_passthru": false,

      "vbdev_split": false,

      "vbdev_zone_block": false,

      "virtio": false,

      "virtio_blk": false,

      "virtio_dev": false,

      "virtio_pci": false,

      "virtio_user": false,

      "vmd": false

    }

    What are the relationship between log level, log print level and log flags. How do I use them? I tried to change log level and log print level from “NOTICE” to “DEBUG” but did not see any change. Also to use them, do I need to make any special SPDK build?

    Thanks,
    -Wenhua Liu
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