From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Nicholas A. Bellinger" Subject: [RFC-v2 00/11] nvmet: Add support for multi-tenant configfs Date: Tue, 14 Jun 2016 04:35:35 +0000 Message-ID: <1465878946-26556-1-git-send-email-nab@linux-iscsi.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail.linux-iscsi.org ([67.23.28.174]:38464 "EHLO linux-iscsi.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932235AbcFNEgs (ORCPT ); Tue, 14 Jun 2016 00:36:48 -0400 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: target-devel Cc: linux-scsi , linux-nvme , Jens Axboe , Christoph Hellwig , Keith Busch , Jay Freyensee , Martin Petersen , Sagi Grimberg , Hannes Reinecke , Mike Christie , Dave B Minturn , Nicholas Bellinger =46rom: Nicholas Bellinger Hi folks, Here's the second pass of a nvmet multi-tenant configfs layout, following what we've learned in target_core_fabric_configfs.c wrt to independent operation of storage endpoints. Namely, it allows existing /sys/kernel/config/target/core/ backends to be configfs symlinked into ../nvmet/subsystems/$SUBSYS_NQN/ as nvme namespaces. Here is how the running RFC-v2 code currently looks: /sys/kernel/config/nvmet/subsystems/ =E2=94=94=E2=94=80=E2=94=80 nqn.2003-01.org.linux-iscsi.NVMf.skylake-ep =E2=94=9C=E2=94=80=E2=94=80 hosts =E2=94=9C=E2=94=80=E2=94=80 namespaces =E2=94=82 =E2=94=94=E2=94=80=E2=94=80 1 =E2=94=82 =E2=94=94=E2=94=80=E2=94=80 ramdisk0 -> ../../../..= /../target/core/rd_mcp_1/ramdisk0 =E2=94=94=E2=94=80=E2=94=80 ports =E2=94=94=E2=94=80=E2=94=80 loop =E2=94=9C=E2=94=80=E2=94=80 addr_adrfam =E2=94=9C=E2=94=80=E2=94=80 addr_portid =E2=94=9C=E2=94=80=E2=94=80 addr_traddr =E2=94=9C=E2=94=80=E2=94=80 addr_treq =E2=94=9C=E2=94=80=E2=94=80 addr_trsvcid =E2=94=9C=E2=94=80=E2=94=80 addr_trtype =E2=94=94=E2=94=80=E2=94=80 enable The series exposes T10-PI from /sys/kernel/config/target/core/ as ID_NS.ms + ID_NS.dps feature bits, and enables block integrity support with nvmet/loop driver. Note this series depends upon the following prerequisites of target-core: http://marc.info/?l=3Dlinux-scsi&m=3D146527281416606&w=3D2 and of course, last week's earlier release of nvmet + friends: http://lists.infradead.org/pipermail/linux-nvme/2016-June/004754.html Note the full set of patches is available from: https://git.kernel.org/cgit/linux/kernel/git/nab/target-pending.git/l= og/?h=3Dnvmet-configfs-ng v2 changes: - Introduce struct nvmet_port_binding in configfs-ng.c, in order to support 1:N mappings. - Convert nvmet_find_get_subsys() + discovery.c logic to use nvmet_port->port_binding_list. - Convert nvmet/loop to use nvmet_port_binding. (1:1 mapping) - Convert nvmet/rdma to use nvmet_port_binding + nvmet_rdma_ports. (1:N mapping) - Export nvmf_host_add + generate hostnqn if necessary. (HCH) - Make nvmet/loop multi-controller allocate it's own nvmf_host per controller. (HCH) - Change nvmet_fabric_ops get/put to use nvmf_disc_rsp_page_entry. - Convert nvmet_genctr to atomic_long_t. - Enable ../nvmet/subsystems/$NQN/hosts/$HOSTNQN group usage in configfs-ng.c. Comments..? --nab Nicholas Bellinger (11): nvme-fabrics: Export nvmf_host_add + generate hostnqn if necessary nvmet: Add nvmet_fabric_ops get/put transport helpers nvmet: Add support for configfs-ng multi-tenant logic nvmet: Hookup nvmet_ns->dev to nvmet_ns_enable nvmet/loop: Add support for controller-per-port model + nvmet_port_binding nvmet/rdma: Convert to struct nvmet_port_binding nvmet/io-cmd: Hookup sbc_ops->execute_rw backend ops nvmet/io-cmd: Hookup sbc_ops->execute_sync_cache backend ops nvmet/io-cmd: Hookup sbc_ops->execute_unmap backend ops nvmet/admin-cmd: Hookup T10-PI to ID_NS.ms + ID_NS.dps feature bits nvmet/loop: Add support for bio integrity handling drivers/nvme/host/fabrics.c | 18 +- drivers/nvme/host/fabrics.h | 1 + drivers/nvme/target/Makefile | 2 +- drivers/nvme/target/admin-cmd.c | 17 + drivers/nvme/target/configfs-ng.c | 661 ++++++++++++++++++++++++++++++= ++++++++ drivers/nvme/target/configfs.c | 12 +- drivers/nvme/target/core.c | 153 ++++++--- drivers/nvme/target/discovery.c | 31 +- drivers/nvme/target/io-cmd.c | 169 ++++++---- drivers/nvme/target/loop.c | 223 +++++++++++-- drivers/nvme/target/nvmet.h | 67 +++- drivers/nvme/target/rdma.c | 127 +++++++- 12 files changed, 1317 insertions(+), 164 deletions(-) create mode 100644 drivers/nvme/target/configfs-ng.c --=20 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html