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Thu, 22 Oct 2020 03:33:15 -0400 (EDT) From: Klaus Jensen To: qemu-devel@nongnu.org Subject: [PATCH v4 0/2] hw/block/nvme: dulbe and dsm support Date: Thu, 22 Oct 2020 09:33:11 +0200 Message-Id: <20201022073313.143794-1-its@irrelevant.dk> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=64.147.123.24; envelope-from=its@irrelevant.dk; helo=wout1-smtp.messagingengine.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/22 03:33:18 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , qemu-block@nongnu.org, Klaus Jensen , Max Reitz , Keith Busch , Klaus Jensen Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Klaus Jensen =0D This adds support for the Deallocated or Unwritten Logical Block error=0D recovery feature as well as the Dataset Management command.=0D =0D I wanted to add support for the NPDG and NPDA fields such that the host=0D could get a hint on how many blocks to request deallocation of for the=0D deallocation to actually happen, but I cannot find a realiable way to=0D get the actual block size of the underlying device. If it is an image on=0D a file system we could typically use the host page size, but if it is a=0D raw device, we might have 512 byte sectors that we can issue discards=0D on. And QEMU doesn't seem to provide this without root privileges at=0D least.=0D =0D See the two patches for some gotchas.=0D =0D I also integrated this into my zoned proposal. I'll spare you the v4, nobod= y=0D cares anyway. But I put it in my repo[1] for posterity.=0D =0D [1]: https://irrelevant.dk/g/pci-nvme.git/tag/?h=3Dzoned-v4.=0D =0D v4:=0D - Removed mixed declaration and code (Keith)=0D - Set NPDG and NPDA and account for the blockdev cluster size.=0D =0D Klaus Jensen (2):=0D hw/block/nvme: add dulbe support=0D hw/block/nvme: add the dataset management command=0D =0D hw/block/nvme-ns.h | 4 +=0D hw/block/nvme.h | 2 +=0D include/block/nvme.h | 12 ++-=0D hw/block/nvme-ns.c | 40 +++++++--=0D hw/block/nvme.c | 183 +++++++++++++++++++++++++++++++++++++++++-=0D hw/block/trace-events | 4 +=0D 6 files changed, 236 insertions(+), 9 deletions(-)=0D =0D -- =0D 2.28.0=0D =0D