rhel7 iscsi

rhel7 iscsi

服务器

[root@server0 /]# yum -y install target*

[root@server0 /]# fdisk /dev/vdb

[root@server0 /]# partprobe

[root@server0 /]# ll /dev/vd*

brw-rw----. 1 root disk 253, 0 Oct 14 12:52 /dev/vda

brw-rw----. 1 root disk 253, 1 Oct 14 2015 /dev/vda1

brw-rw----. 1 root disk 253, 16 Oct 14 12:52 /dev/vdb

brw-rw----. 1 root disk 253, 17 Oct 14 2015 /dev/vdb1

brw-rw----. 1 root disk 253, 18 Oct 14 12:52 /dev/vdb2

[root@server0 /]# targetcli

/> backstores/block create dev=/dev/vdb2 name=hrr

/> cd iscsi

/iscsi> create iqn.2015-10.com.example:server0

/iscsi> cd iqn.2015-10.com.example:server0/tpg1/

/iscsi/iqn.20...:server0/tpg1> acls/ create iqn.2015-10.com.example:desktop0

/iscsi/iqn.20...:server0/tpg1> luns/ create /backstores/block/hrr

/iscsi/iqn.20...:server0/tpg1> portals/ create 172.25.0.11

/iscsi/iqn.20...:server0/tpg1> exit

[root@server0 /]# systemctl start target

[root@server0 /]# systemctl enable target

[root@server0 /]# firewall-cmd --permanent --add-port=3260/tcp

success

[root@server0 /]# firewall-cmd --reload

success

客户机

[root@desktop0 /]# yum -y install iscsi-initiator-utils.i686

[root@desktop0 /]# mkdir /mnt/abc

[root@desktop0 /]# man iscsiadm |grep EXAMPLE -A10

EXAMPLES

Discover targets at a given IP address:

iscsiadm --mode discoverydb --type sendtargets --portal 192.168.1.10 --discover

Login, must use a node record id found by the discovery:

iscsiadm --mode node --targetname iqn.2001-05.com.doe:test --portal 192.168.1.1:3260 --login

Logout:

[root@desktop0 /]# systemctl restart iscsi iscsid

[root@desktop0 /]# systemctl enable iscsi iscsid

[root@desktop0 /]# iscsiadm --mode discoverydb --type sendtargets --portal 172.25.0.11 --discover

172.25.0.11:3260,1 iqn.2015-10.com.example:server0

[root@desktop0 /]# iscsiadm --mode node --targetname iqn.2015-10.com.example:desktop0 --portal 172.25.0.11:3260 --login

iscsiadm: No records found

[root@desktop0 /]# ls -L /dev/sd*

/dev/sda

[root@desktop0 /]# ls -l /dev/disk/by-path/ip-172.25.0.11\:3260-iscsi-iqn.2015-10.com.example\:server0-lun-0

lrwxrwxrwx. 1 root root 9 Oct 14 15:39 /dev/disk/by-path/ip-172.25.0.11:3260-iscsi-iqn.2015-10.com.example:server0-lun-0 -> ../../sda

[root@desktop0 /]# fdisk /dev/sda

[root@desktop0 /]# ll /dev/sd*

brw-rw----. 1 root disk 8, 0 Oct 14 15:40 /dev/sda

brw-rw----. 1 root disk 8, 1 Oct 14 15:40 /dev/sda1

[root@desktop0 /]# mkfs.xfs /dev/sda1

meta-data=/dev/sda1 isize=256 agcount=8, agsize=16000 blks

= sectsz=512 attr=2, projid32bit=1

= crc=0

data = bsize=4096 blocks=128000, imaxpct=25

= sunit=0 s blks

naming =version 2 bsize=4096 ascii-ci=0 ftype=0

log =internal log bsize=4096 blocks=853, version=2

= sectsz=512 sunit=0 blks, lazy-count=1

realtime =none extsz=4096 blocks=0, rtextents=0

[root@desktop0 /]# mount /dev/sda1 /mnt/abc/

[root@desktop0 /]# df -TH

Filesystem Type Size Used Avail Use% Mounted on

/dev/vda1 xfs 11G 3.4G 7.4G 32% /

devtmpfs devtmpfs 950M 0 950M 0% /dev

tmpfs tmpfs 966M 82k 966M 1% /dev/shm

tmpfs tmpfs 966M 18M 948M 2% /run

tmpfs tmpfs 966M 0 966M 0% /sys/fs/cgroup

//server0/hrr cifs 11G 3.3G 7.5G 31% /mnt/hrr

/dev/sda1 xfs 521M 27M 495M 6% /mnt/abc

[root@desktop0 /]# vim /etc/fstab

/dev/sda1/mnt/abc xfs defaults,_netdev 0 0

[root@desktop0 ~]# ll /dev/sd*

brw-rw----. 1 root disk 8, 0 Oct 14 16:44 /dev/sda

brw-rw----. 1 root disk 8, 1 Oct 14 15:43 /dev/sda1

brw-rw----. 1 root disk 8, 2 Oct 14 16:44 /dev/sda2

[root@desktop0 ~]# mkfs.xfs /dev/sda2

[root@desktop0 ~]# blkid /dev/sda2

/dev/sda2: UUID="d8b12595-9d5d-4988-a4fa-387774242ca8" TYPE="xfs"

[root@desktop0 ~]# vim /etc/fstab

UUID=d8b12595-9d5d-4988-a4fa-387774242ca8 /mnt/uuid xfs defaults,_netdev 0 0

[root@desktop0 ~]# mkdir /mnt/uuid

[root@desktop0 ~]# mount -a

[root@desktop0 ~]# df -TH

Filesystem Type Size Used Avail Use% Mounted on

/dev/vda1 xfs 11G 3.4G 7.4G 32% /

devtmpfs devtmpfs 950M 0 950M 0% /dev

tmpfs tmpfs 966M 82k 966M 1% /dev/shm

tmpfs tmpfs 966M 18M 948M 2% /run

tmpfs tmpfs 966M 0 966M 0% /sys/fs/cgroup

//server0/hrr