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[RFC PATCH V3 0/8] hw/block/nvme: support multi-path for ctrl/ns
From: |
Minwoo Im |
Subject: |
[RFC PATCH V3 0/8] hw/block/nvme: support multi-path for ctrl/ns |
Date: |
Wed, 20 Jan 2021 02:01:39 +0900 |
Hello,
This patch series is third one to support multi-controller and namespace
sharing in multi-path. This series introduced subsystem scheme to
manage controller(s) and namespace(s) in the subsystem.
This series has new patches from the V2: 'detached' parameter has been
added to the nvme-ns device. This will decide whether to attach the
namespace to controller(s) in the current subsystem or not. If it's
given with true, then it will be just allocated in the subsystem, but
not attaching to any controllers in the subsystem. Otherwise, it will
automatically attach to all the controllers in the subsystem. The other
t hing is that the last patch implemented Identify Active Namespace ID
List command handler apart from the Allocated Namespace ID List.
Run with:
-device nvme,serial=qux,id=nvme3
-device nvme-ns,id=ns3,drive=drv12,nsid=3,bus=nvme3
-device nvme-subsys,id=subsys0
-device nvme,serial=foo,id=nvme0,subsys=subsys0
-device nvme,serial=bar,id=nvme1,subsys=subsys0
-device nvme,serial=baz,id=nvme2,subsys=subsys0
-device nvme-ns,id=ns1,drive=drv10,nsid=1,subsys=subsys0,detached=true
-device nvme-ns,id=ns2,drive=drv11,nsid=2,bus=nvme2
nvme-cli:
root@vm:~/work# nvme list -v
NVM Express Subsystems
Subsystem Subsystem-NQN
Controllers
----------------
------------------------------------------------------------------------------------------------
----------------
nvme-subsys0 nqn.2019-08.org.qemu:qux
nvme0
nvme-subsys1 nqn.2019-08.org.qemu:subsys0
nvme1, nvme2, nvme3
NVM Express Controllers
Device SN MN FR
TxPort Address Subsystem Namespaces
-------- -------------------- ----------------------------------------
-------- ------ -------------- ------------ ----------------
nvme0 qux QEMU NVMe Ctrl 1.0
pcie 0000:00:06.0 nvme-subsys0
nvme1 foo QEMU NVMe Ctrl 1.0
pcie 0000:00:07.0 nvme-subsys1
nvme2 bar QEMU NVMe Ctrl 1.0
pcie 0000:00:08.0 nvme-subsys1
nvme3 baz QEMU NVMe Ctrl 1.0
pcie 0000:00:09.0 nvme-subsys1 nvme1n1
NVM Express Namespaces
Device NSID Usage Format Controllers
------------ -------- -------------------------- ----------------
----------------
nvme0n1 3 268.44 MB / 268.44 MB 512 B + 0 B nvme0
nvme1n1 2 268.44 MB / 268.44 MB 512 B + 0 B nvme3
Now we have [allocated|not-allocated]/[attached/detached] scheme for
namespaces and controllers. The next series is going to be to support
namespace management and attachment with few Identify command handlers.
Please review.
Thanks!
Since RFC V2:
- Rebased on nvme-next branch with trivial patches from the previous
version(V2) applied. (Klaus)
- Fix enumeration type name convention with NvmeIdNs prefix. (Klaus)
- Put 'cntlid' to NvmeCtrl instance in nvme_init_ctrl() which was
missed in V2.
- Added 'detached' parameter to nvme-ns device to decide whether to
attach or not to controller(s) in the subsystem. (Klaus)
- Implemented Identify Active Namespace ID List aprt from Identify
Allocated Namespace ID List by removing fall-thru statement.
Since RFC V1:
- Updated namespace sharing scheme to be based on nvme-subsys
hierarchy.
Minwoo Im (8):
hw/block/nvme: introduce nvme-subsys device
hw/block/nvme: support to map controller to a subsystem
hw/block/nvme: add CMIC enum value for Identify Controller
hw/block/nvme: support for multi-controller in subsystem
hw/block/nvme: add NMIC enum value for Identify Namespace
hw/block/nvme: support for shared namespace in subsystem
hw/block/nvme: add 'detached' param not to attach namespace
hw/block/nvme: Add Identify Active Namespace ID List
hw/block/meson.build | 2 +-
hw/block/nvme-ns.c | 32 ++++++++--
hw/block/nvme-ns.h | 13 ++++
hw/block/nvme-subsys.c | 111 +++++++++++++++++++++++++++++++++
hw/block/nvme-subsys.h | 32 ++++++++++
hw/block/nvme.c | 137 ++++++++++++++++++++++++++++++++++++++---
hw/block/nvme.h | 19 ++++++
include/block/nvme.h | 8 +++
8 files changed, 340 insertions(+), 14 deletions(-)
create mode 100644 hw/block/nvme-subsys.c
create mode 100644 hw/block/nvme-subsys.h
--
2.17.1
- [RFC PATCH V3 0/8] hw/block/nvme: support multi-path for ctrl/ns,
Minwoo Im <=
- [RFC PATCH V3 1/8] hw/block/nvme: introduce nvme-subsys device, Minwoo Im, 2021/01/19
- [RFC PATCH V3 2/8] hw/block/nvme: support to map controller to a subsystem, Minwoo Im, 2021/01/19
- [RFC PATCH V3 3/8] hw/block/nvme: add CMIC enum value for Identify Controller, Minwoo Im, 2021/01/19
- [RFC PATCH V3 4/8] hw/block/nvme: support for multi-controller in subsystem, Minwoo Im, 2021/01/19
- [RFC PATCH V3 5/8] hw/block/nvme: add NMIC enum value for Identify Namespace, Minwoo Im, 2021/01/19
- [RFC PATCH V3 7/8] hw/block/nvme: add 'detached' param not to attach namespace, Minwoo Im, 2021/01/19
- [RFC PATCH V3 6/8] hw/block/nvme: support for shared namespace in subsystem, Minwoo Im, 2021/01/19
- [RFC PATCH V3 8/8] hw/block/nvme: Add Identify Active Namespace ID List, Minwoo Im, 2021/01/19