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[PATCH v2 00/15] hw/block/nvme: Support Namespace Types and Zoned Namesp
From: |
Dmitry Fomichev |
Subject: |
[PATCH v2 00/15] hw/block/nvme: Support Namespace Types and Zoned Namespace Command Set |
Date: |
Sun, 13 Sep 2020 07:54:15 +0900 |
v1 -> v2:
- Rebased on top of qemu-nvme/next branch.
- Incorporated feedback from Klaus and Alistair.
- Dropped "Simulate Zone Active excursions" patch.
Excursion behavior may depend on the internal controller
architecture and therefore be vendor-specific.
- Dropped support for Zone Attributes and zoned AENs for now.
These features can be added in a future series.
- NS Types support is extended to handle active/inactive namespaces.
- Update the write pointer after backing storage I/O completion, not
before. This makes the emulation to run correctly in case of
backing device failures.
- Avoid division in the I/O path if the device zone size is
a power of two (the most common case). Zone index then can be
calculated by using bit shift.
- A few reported bugs have been fixed.
- Indentation in function definitions has been changed to make it
the same as the rest of the code.
Zoned Namespace (ZNS) Command Set is a newly introduced command set
published by the NVM Express, Inc. organization as TP 4053. The main
design goals of ZNS are to provide hardware designers the means to
reduce NVMe controller complexity and to allow achieving a better I/O
latency and throughput. SSDs that implement this interface are
commonly known as ZNS SSDs.
This command set is implementing a zoned storage model, similarly to
ZAC/ZBC. As such, there is already support in Linux, allowing one to
perform the majority of tasks needed for managing ZNS SSDs.
The Zoned Namespace Command Set relies on another TP, known as
Namespace Types (NVMe TP 4056), which introduces support for having
multiple command sets per namespace.
Both ZNS and Namespace Types specifications can be downloaded by
visiting the following link -
https://nvmexpress.org/wp-content/uploads/NVM-Express-1.4-Ratified-TPs.zip
This patch series adds Namespace Types support and zoned namespace
emulation capability to the existing NVMe PCI device.
The patchset is organized as follows -
The first several patches are preparatory and are added to allow for
an easier review of the subsequent commits. The group of patches that
follows adds NS Types support with only NVM Command Set being
available. Finally, the last group of commits makes definitions and
adds new code to support Zoned Namespace Command Set.
Based-on: https://www.mail-archive.com/qemu-devel@nongnu.org/msg736817.html
*** BLURB HERE ***
Ajay Joshi (1):
hw/block/nvme: Define 64 bit cqe.result
Dmitry Fomichev (11):
hw/block/nvme: Report actual LBA data shift in LBAF
hw/block/nvme: Add Commands Supported and Effects log
hw/block/nvme: Define trace events related to NS Types
hw/block/nvme: Make Zoned NS Command Set definitions
hw/block/nvme: Define Zoned NS Command Set trace events
hw/block/nvme: Support Zoned Namespace Command Set
hw/block/nvme: Introduce max active and open zone limits
hw/block/nvme: Support Zone Descriptor Extensions
hw/block/nvme: Add injection of Offline/Read-Only zones
hw/block/nvme: Use zone metadata file for persistence
hw/block/nvme: Document zoned parameters in usage text
Niklas Cassel (3):
hw/block/nvme: Introduce the Namespace Types definitions
hw/block/nvme: Add support for Namespace Types
hw/block/nvme: Add support for active/inactive namespaces
block/nvme.c | 2 +-
block/trace-events | 2 +-
hw/block/nvme.c | 1932 ++++++++++++++++++++++++++++++++++++++++-
hw/block/nvme.h | 190 ++++
hw/block/trace-events | 38 +
include/block/nvme.h | 210 ++++-
6 files changed, 2308 insertions(+), 66 deletions(-)
--
2.21.0
- [PATCH v2 00/15] hw/block/nvme: Support Namespace Types and Zoned Namespace Command Set,
Dmitry Fomichev <=
- [PATCH v2 01/15] hw/block/nvme: Define 64 bit cqe.result, Dmitry Fomichev, 2020/09/12
- [PATCH v2 02/15] hw/block/nvme: Report actual LBA data shift in LBAF, Dmitry Fomichev, 2020/09/12
- [PATCH v2 03/15] hw/block/nvme: Add Commands Supported and Effects log, Dmitry Fomichev, 2020/09/12
- [PATCH v2 04/15] hw/block/nvme: Introduce the Namespace Types definitions, Dmitry Fomichev, 2020/09/12
- [PATCH v2 05/15] hw/block/nvme: Define trace events related to NS Types, Dmitry Fomichev, 2020/09/12
- [PATCH v2 06/15] hw/block/nvme: Add support for Namespace Types, Dmitry Fomichev, 2020/09/12
- [PATCH v2 07/15] hw/block/nvme: Add support for active/inactive namespaces, Dmitry Fomichev, 2020/09/12
- [PATCH v2 08/15] hw/block/nvme: Make Zoned NS Command Set definitions, Dmitry Fomichev, 2020/09/12
- [PATCH v2 09/15] hw/block/nvme: Define Zoned NS Command Set trace events, Dmitry Fomichev, 2020/09/12
- [PATCH v2 10/15] hw/block/nvme: Support Zoned Namespace Command Set, Dmitry Fomichev, 2020/09/12