前回でInfiniBandのHBAが認識できたので、次はIPoverIBでiSCSIの設定をします。

次のコマンドで接続情報を追加します。

#nmcli con add type infiniband con-name ib0 ifname ib0 ip4 192.168.8.10/24

ディスクを確認します。8TBがsdbとsdcに割りあたっています。

# fdisk -l
Disk /dev/sdc: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O サイズ (最小 / 推奨): 4096 バイト / 4096 バイト

Disk /dev/sdb: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O サイズ (最小 / 推奨): 4096 バイト / 4096 バイト

次にSoftwareRAIDのmdadm をインストールします。

#yum install mdadm

sdbとsdcをmd8tbに割り当てます。

#mdadm --create /dev/md/md8tb --level=raid1 --name=md8tb --raid-devices=2 /dev/sdb /dev/sdc
#mdadm --detail --scan > /etc/mdadm.conf

作成結果を確認します。

#  mdadm --detail /dev/md/md8tb
/dev/md/md8tb:
           Version : 1.2
     Creation Time : Sun Jun  9 19:25:32 2019
        Raid Level : raid1
        Array Size : 7813894464 (7451.91 GiB 8001.43 GB)
     Used Dev Size : 7813894464 (7451.91 GiB 8001.43 GB)
      Raid Devices : 2
     Total Devices : 2
       Persistence : Superblock is persistent

     Intent Bitmap : Internal

       Update Time : Sun Jun  9 19:26:33 2019
             State : clean, resyncing
    Active Devices : 2
   Working Devices : 2
    Failed Devices : 0
     Spare Devices : 0

Consistency Policy : bitmap

     Resync Status : 0% complete

              Name : d525.gurees.net:md8tb  (local to host d525.gurees.net)
              UUID : 393e8c29:25544971:c4194dc0:8280fde3
            Events : 12

    Number   Major   Minor   RaidDevice State
       0       8       16        0      active sync   /dev/sdb
       1       8       32        1      active sync   /dev/sdc

iSCSIターゲットを構成します。

#yum install targetcli
#systemctl enable target.service
#systemctl start target.service
#targetcli /backstores/block create name=lun1 dev=/dev/md/md8tb
#targetcli /iscsi create iqn.2019-06.net.gurres:d525
#targetcli /iscsi/iqn.2019-06.net.gurres:d525/tpg1/luns create /backstores/block/lun1
#targetcli ls
o- / ..................................................................... [...]
  o- backstores .......................................................... [...]
  | o- block .............................................. [Storage Objects: 1]
  | | o- lun1 .................... [/dev/md/md8tb (7.3TiB) write-thru activated]
  | |   o- alua ............................................... [ALUA Groups: 1]
  | |     o- default_tg_pt_gp ................... [ALUA state: Active/optimized]
  | o- fileio ............................................. [Storage Objects: 0]
  | o- pscsi .............................................. [Storage Objects: 0]
  | o- ramdisk ............................................ [Storage Objects: 0]
  o- iscsi ........................................................ [Targets: 1]
  | o- iqn.2019-06.d525.net.gurres:d525 .............................. [TPGs: 1]
  |   o- tpg1 ........................................... [no-gen-acls, no-auth]
  |     o- acls ...................................................... [ACLs: 0]
  |     o- luns ...................................................... [LUNs: 1]
  |     | o- lun0 .............. [block/lun1 (/dev/md/md8tb) (default_tg_pt_gp)]
  |     o- portals ................................................ [Portals: 1]
  |       o- 0.0.0.0:3260 ................................................. [OK]
  o- loopback ..................................................... [Targets: 0]
  o- srpt ......................................................... [Targets: 0]
#targetcli saveconfig

iqn.2019-06.net.gurres:d525でIQNを構成しました。

接続もとのイニシエータのIQN調べて接続できるようにします。

#targetcli
> cd /iscsi/iqn.2019-06.net.gurres:d525/tpg1/acls
> create iqn.1998-01.com.vmware:5cec6c13-0c4d-e2b8-206d-6805ca32c43e-1310a439

これでiSCSIの設定は完了です。