#!/bin/sh # # # NVMe-oF (rdma, tcp, fc) OCF RA. Exports and manages NVMe targets. # # (c) 2021 LINBIT HA-Solutions GmbH, written by Philipp Reisner # # This program is free software; you can redistribute it and/or modify # it under the terms of version 2 of the GNU General Public License as # published by the Free Software Foundation. # # This program is distributed in the hope that it would be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # # Further, this software is distributed without any warranty that it is # free of the rightful claim of any third person regarding infringement # or the like. Any license provided herein, whether implied or # otherwise, applies only to this software file. Patent licenses, if # any, provided herein do not apply to combinations of this program with # other software, or any other product whatsoever. # # You should have received a copy of the GNU General Public License # along with this program; if not, write the Free Software Foundation, # Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. # ####################################################################### # Initialization: : ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat} . ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs OCF_RESKEY_allowed_initiators_default="" : ${OCF_RESKEY_allowed_initiators=${OCF_RESKEY_allowed_initiators_default}} OCF_RESKEY_serial_default="" : ${OCF_RESKEY_serial=${OCF_RESKEY_serial_default}} ####################################################################### meta_data() { cat < 0.9 Manages NVMe-oF subsystems. An NVMe-oF subsystem is part of an NVMe-oF target. A subsystem must be created first, before namespace(s) and port(s). NVMe-oF target export agent The NVMe Qualified Name (NQN) is used to identify the remote NVMe storage target. It is similar to an iSCSI Qualified Name (IQN). While it is a free-form string, you should follow the convention: nqn.2014-08.com.vendor:nvme:nvm-subsystem-sn-12345 NVMe Qualified Name Allowed initiators. A space-separated list of initiators allowed to connect to this target. Initiators are identified by their NQN. If the list is empty, any initiator will be allowed to connect. List of NVMe initiators allowed to connect to this target The serial of the subsystem. Set it to a random 16 character hex value. Use hexdump -n 8 -e '4/4 "%08x" 1 "\n"' /dev/urandom List of NVMe initiators allowed to connect to this target END } ####################################################################### nvmet_subsystem_usage() { cat < ${subsys}/attr_serial if [ -z "${OCF_RESKEY_allowed_initiators}" ]; then echo 1 > ${subsys}/attr_allow_any_host else local hosts_dir=/sys/kernel/config/nvmet/hosts echo 0 > ${subsys}/attr_allow_any_host for hostnqn in "${OCF_RESKEY_allowed_initiators}"; do mkdir -p ${hosts_dir}/${hostnqn} ln -s ${hosts_dir}/${hostnqn} ${subsys}/allowed_hosts done fi nvmet_subsystem_monitor } nvmet_subsystem_stop() { nvmet_subsystem_monitor if [ $? -eq $OCF_NOT_RUNNING ]; then return $OCF_SUCCESS fi rmdir /sys/kernel/config/nvmet/subsystems/${OCF_RESKEY_nqn} return $OCF_SUCCESS } nvmet_subsystem_monitor() { [ -d /sys/kernel/config/nvmet/subsystems/${OCF_RESKEY_nqn} ] || return $OCF_NOT_RUNNING return $OCF_SUCCESS } nvmet_subsystem_validate() { if [ ! -d /sys/kernel/config/nvmet ]; then ocf_log err "/sys/kernel/config/nvmet does not exist -- Load the nvmet.ko linux kernel module." exit $OCF_ERR_INSTALLED fi return $OCF_SUCCESS } case $1 in meta-data) meta_data exit $OCF_SUCCESS ;; usage|help) nvmet_subsystem_usage exit $OCF_SUCCESS ;; esac # Everything except usage and meta-data must pass the validate test nvmet_subsystem_validate case $__OCF_ACTION in start) nvmet_subsystem_start;; stop) nvmet_subsystem_stop;; monitor|status) nvmet_subsystem_monitor;; reload) ocf_log info "Reloading..." nvmet_subsystem_start ;; validate-all) ;; *) nvmet_subsystem_usage exit $OCF_ERR_UNIMPLEMENTED ;; esac rc=$? ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION : $rc" exit $rc