1:57 p.m.
Hi Guys,
I have a doubt. There are RPC apis to create block devices basically aio and malloc. After
adding the block devices from RPC how do you specify the subsystem for the block devices
that are added. Is there any API to specify that the created block devices belong to a
name space
It's really urgent ! Need your help!
Thanking you,
Param
Sent from my iPhone
2:03 p.m.
I meant how do we specify the subsystem. It's not the namespace. We create devices and
how do we specify the subsystem.
Sent from my iPhone
On 27-Oct-2016, at 11:27 PM, Kumaraparameshwaran Rathnavel
<krath(a)cloudsimple.com> wrote:
Hi Guys,
I have a doubt. There are RPC apis to create block devices basically aio and malloc.
After adding the block devices from RPC how do you specify the subsystem for the block
devices that are added. Is there any API to specify that the created block devices belong
to a name space
It's really urgent ! Need your help!
Thanking you,
Param
Sent from my iPhone
6:21 p.m.
On 10/27/2016 11:03 AM, Kumaraparameshwaran Rathnavel wrote:
I meant how do we specify the subsystem. It's not the namespace.
We create devices and how do we specify the subsystem.
Sent from my iPhone
> On 27-Oct-2016, at 11:27 PM, Kumaraparameshwaran Rathnavel
<krath(a)cloudsimple.com> wrote:
>
> Hi Guys,
>
> I have a doubt. There are RPC apis to create block devices basically aio and malloc.
After adding the block devices from RPC how do you specify the subsystem for the block
devices that are added. Is there any API to specify that the created block devices belong
to a name space
>
> It's really urgent ! Need your help!
> Thanking you,
> Param
>
Hi Param,
Adding block devices to the NVMe over Fabrics target via RPC is a
two-step process. First create the block device using the appropriate
RPC for the block device type, e.g. construct_malloc_bdev, then create a
subsystem to export one or more block devices using
construct_nvmf_subsystem. The subsystem must use Virtual mode if you
would like to export bdevs rather than a direct NVMe controller.
You can find an example of how these RPCs interact in our automated test
scripts, such as test/nvmf/fio/fio.sh.
Note that the construct_*_bdev interfaces were recently changed to
report the name of the bdev that was created in the response. This can
be used to determine the namespaces (bdev names) passed to
construct_nvmf_subsystem.
-- Daniel
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2 comments
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participants (2)
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Daniel Verkamp -
Kumaraparameshwaran Rathnavel