From mboxrd@z Thu Jan  1 00:00:00 1970
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From: Harris, James R <james.r.harris at intel.com>
Subject: [SPDK] Significant updates to SPDK bdev nvme driver
Date: Fri, 17 Mar 2017 21:23:44 +0000
Message-ID: <31328D6F-7639-4EEF-9E42-7A13C0AEBCB9@intel.com>
List-ID: <spdk@lists.01.org>
To: spdk@lists.01.org

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Several changes to the SPDK bdev nvme driver have been synced to the github=
 repo today.  These will affect anyone using the SPDK nvme driver in an iSC=
SI or NVMe-oF context via the SPDK block device layer.

1)       The SPDK bdev nvme driver can now create bdevs for both locally at=
tached and remote (NVMe-oF) devices.
2)       The SPDK bdev nvme driver no longer supports wildcard claiming of =
NVMe devices.  This deprecates the NumControllers and ClaimAllDevices key n=
ames and requires users to explicitly list the devices to be attached.
3)       The SPDK bdev nvme driver no longer automatically creates names fo=
r block devices =E2=80=93 these names are now specified by the user.

All of the above changes are in effect as of SPDK git commit ID d326998ce.

scripts/gen_nvme.sh can be used to automate creation of a valid configurati=
on file section for locally attached NVMe SSDs.

New configuration file format:

[Nvme]
  # NVMe Device Whitelist
  # Users may specify which NVMe devices to claim by their transport id.
  # See spdk_nvme_transport_id_parse() in spdk/nvme.h for the correct forma=
t.
  # The devices will be assigned names in the format <YourName>nY, where Yo=
urName is the
  # name specified at the end of the TransportId line and Y is the namespac=
e id, which starts at 1.
  TransportID "trtype:PCIe traddr:0000:00:00.0" Nvme0
  TransportID "trtype:RDMA subnqn:nqn.2016-06.io.spdk:cnode1 traddr:192.168=
.100.1 trsvcid:4420" Nvme1

Thanks,

-Jim



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