how to set up a nvme target over RAMDISK backend

[Krishnamraju Eraparaju]

Thank you very much Chuck!
Will try bhyve alternative...

On Tue, Jun 30, 2020 at 11:41 PM Chuck Tuffli <chuck at tuffli.net> wrote:

> On Thu, Jun 25, 2020 at 9:01 PM Krishnamraju Eraparaju <ekraju at gmail.com>
> wrote:
>
>> Hi All,
>>
>>
>> Could someone please help me in setting up a nvme target over RAMDISK
>> backend(or any pseudo disk).
>>
>> Equivalent in Linux would be as below:
>>
>> modprobe null_blk
>> modprobe nvmet
>> modprobe nvmet_rdma
>>
>>
>> mkdir /sys/kernel/config/nvmet/subsystems/nvme-ram0
>> mkdir /sys/kernel/config/nvmet/subsystems/nvme-ram0/namespaces/1
>>
>> echo -n /dev/ram1
>> >/sys/kernel/config/nvmet/subsystems/nvme-ram0/namespaces/1/device_path
>> echo 1 > /sys/kernel/config/nvmet/subsystems/nvme-ram0/attr_allow_any_host
>> echo 1 > /sys/kernel/config/nvmet/subsystems/nvme-ram0/namespaces/1/enable
>>
>
> FreeBSD doesn't have a direct equivalent of this. It does support NVMe
> device emulation in bhyve, but based on loading RDMA drivers above, I'm
> guessing this won't meet your needs. Another option would be to use the
> nvmf_tgt provided in SPDK (https://spdk.io/). This would give you the
> similar functionality to the Linux NVMe target and supports multiple
> transports including RoCE.
>
> --chuck
>