modules.d/95nvmf/nvmf-autoconnect.sh

   1 #!/bin/sh
   2 # Argument $1 is "settled", "online", or "timeout", indicating
   3 # the queue from which the script is called.
   4 # In the "timeout" case, try everything.
   5 # Otherwise, try options according to the priorities below.
   6
   7 [ "$RD_DEBUG" != yes ] || set -x
   8
   9 if [ "$1" = timeout ]; then
  10     [ ! -f /sys/class/fc/fc_udev_device/nvme_discovery ] \
  11         || echo add > /sys/class/fc/fc_udev_device/nvme_discovery
  12     /usr/sbin/nvme connect-all
  13     exit 0
  14 fi
  15
  16 NVMF_HOSTNQN_OK=
  17 [ ! -f "/etc/nvme/hostnqn" ] || [ ! -f "/etc/nvme/hostid" ] || NVMF_HOSTNQN_OK=1
  18
  19 # Only nvme-cli 2.5 or newer supports the options --nbft and --no-nbft
  20 # for the connect-all command.
  21 # Make sure we don't use unsupported options with earlier versions.
  22 NBFT_SUPPORTED=
  23 # shellcheck disable=SC2016
  24 /usr/sbin/nvme connect-all --help 2>&1 | sed -n '/[[:space:]]--nbft[[:space:]]/q1;$q0' \
  25     || NBFT_SUPPORTED=1
  26
  27 if [ -e /tmp/nvmf-fc-auto ] && [ "$NVMF_HOSTNQN_OK" ] \
  28     && [ -f /sys/class/fc/fc_udev_device/nvme_discovery ]; then
  29     # prio 1: cmdline override "rd.nvmf.discovery=fc,auto"
  30     echo add > /sys/class/fc/fc_udev_device/nvme_discovery
  31     exit 0
  32 fi
  33 if [ "$NBFT_SUPPORTED" ] && [ -e /tmp/valid_nbft_entry_found ]; then
  34     # prio 2: NBFT
  35     /usr/sbin/nvme connect-all --nbft
  36     exit 0
  37 fi
  38 if [ -f /etc/nvme/discovery.conf ] || [ -f /etc/nvme/config.json ] \
  39     && [ "$NVMF_HOSTNQN_OK" ]; then
  40     # prio 3: configuration from initrd and/or kernel command line
  41     # We can get here even if "rd.nvmf.nonbft" was given, thus use --no-nbft
  42     if [ "$NBFT_SUPPORTED" ]; then
  43         /usr/sbin/nvme connect-all --no-nbft
  44     else
  45         /usr/sbin/nvme connect-all
  46     fi
  47     exit 0
  48 fi
  49 if [ "$NVMF_HOSTNQN_OK" ] \
  50     && [ -f /sys/class/fc/fc_udev_device/nvme_discovery ]; then
  51     # prio 4: no discovery entries, try NVMeoFC autoconnect
  52     echo add > /sys/class/fc/fc_udev_device/nvme_discovery
  53 fi
  54 exit 0