Ip-san network storage services to build

Brief look SAN (storage area network and storage area network SAN protocol, abbreviated SAN), which is a high-speed network data transfer between the computer and storage systems. Common classification is FC-SAN and IP-SAN two kinds.
FC-SAN forwarded via Fiber Channel SCSI protocol; IP-SAN forwards the SCSI protocol over TCP protocol, i.e. the IP address of
the storage device in English means for storing one or more computer data disk device, usually a disk array, the main vendors EMC, Hitachi.

IP-SAN storage following configuration combat

service name	server address
Server: node01	192.168.137.101
Client: node02	192.168.137.102
Client: node03	192.168.137.103

First, the server installation
 1.1 IPSAN is C / S mode service port 3260

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1. [root @ node01〜]＃yum -y install scsi-target-utils #yum安装
2. [root @ node01~] #ll /etc/tgt/targets.conf# main profile
   -rw ------- 1 root. 4 On Sep 6945, 2013 /etc/tgt/targets.conf the root
   [the root @  node01~ ] #service tgtd restart # service start
   stop SCSI target daemon: not running [FAILED]
   to start the SCSI target daemon: [OK]
   [root @ node01~] #chkconfig tgtd located
   [root @ node01~] #netstat -antup | grep 3260 # inspection service port
   tcp 0 0 0.0.0.0:3260 0.0.0.0:* LISTEN 1125 / tgtd           
   tcp 0 0 ::: 3260 ::: * LISTEN 1125 / tgtd  [root @  node01~           
   ] # 

1.2 new storage partitions, where we add a new block size 10G disk / dev / sdb, restart the server by vmvare

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1. [Root @ node01~] #fdisk -l | grep "Disk"
2. Disk / dev / sda: 21.5 GB, 21474836480 bytes
3. Disk identifier: 0x0004a1ec
4. Disk / dev / sdb: 10.7 GB, 10737418240 bytes
5. Disk identifier: 0x00000000
6. [root @ node01〜]＃
7. [Root @ node01~] #fdisk / dev / sdb # partition, the size of 5G
   
   

1.3 shared storage partitions, modify /etc/tgt/targets.conf file

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1. [  Root NODE01~ @ ]  # VIM's / etc / TGT / target . conf # add the following, the following is the format iscsi
3. <Target iqn. 2016--08. cn. node01. www: target4_scan> # name 
4.         Support - Store / dev / sdb1 # shared partition
5.         Originator - address 192. 168. 137. # 102 allows access address
6.         Originator - address 192. 168. 137. 103
7.         vendor_id node labeled #
8.         product_id target4 # Number
9. </ Target>
10. [root @ node01~] # tgt- admin -show # view the status of
    goals 1: iqn.2016-08.cn.node01.www: target4_scan
        System Information:
            Driver: iscsi
            status: Ready
        I_T related information:
        LUN information:
            LUN: 0
                type: control
                the SCSI ID: 00010000 the IET
                the SCSI SEQ ID nO: beaf10
                size: 0 MB, the block size: 1
                line: a
                removable media: nO
                from deletion: no
                read-only: no
                backing store type: null
                backing store path: None
                backing store flag: 
            LUNs:. 1
                type: disk
                the SCSI ID: 00010001 the IET
                the SCSI SEQ ID NO: beaf11
                size: 5379 MB, the block size: 512
                online: yES
                Removable media: No
                prevented Delete: No
                read-only: no
                backing store type: rdwr backup
                storage path: / dev / sdb1  back-up
                storage flag: 
        Account Information:
        ACL information:
            192.168.137.102
            192.168.137.103
    [root @ node01~] # 
    
    

Second, the client configuration
2.1 Installation iscsi-initiator-utils, and configure the service information

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1. [root @ node02〜]＃yum -y install iscsi-initiator-utils
2. [Root @ node02~] #iscsiadm -m find -t sendtargets -p 192.168.137.101 # find the target storage
3. Start iscsid: [OK]
4. 192.168.137.101:3260,1 iqn.2016-08.cn.node01.www：target4_scan
5. [root @ node02〜]＃
6. [Root @ node02~] # / etc / init.d / iscsid status # View Client Services
7. iscsid (pid 1153) is running ...
8. [root @ node02〜]＃
9. [Root @ node02~] # tree / var / lib / iscsi / # find the target service, information will be written in / var / lib / iscsi directory
10. / var / lib / iscsi /
11. ├──ifaces
12. ├──isns
13. ├── node
14. │└──iqn.2016-08.cn.node01.www：target4_scan
15. │└──192.168.137.101,3260,1
16. │└── default
17. ├──send_targets
18. │└──192.168.137.101,3260
19. │├──iqn.2016-08.cn.node01.www：target4_scan，192.168.137.101,3260,1，默认-> /var/lib/iscsi/nodes/iqn.2016-08.cn.node01.www： target4_scan / 192.168.137.101,3260,1
20. │└──st_config
21. ├──slp
22. └── static
24. 10 directory, two files
25. [root @ node02〜]＃
26. [root @ node02~
    ] # / etc / init.d /  iscsid Start # first start iscsid service [root @  node02~ ] # / etc / init.d / iscsi Start # iscsi service to start the service in accordance with iscsid service information / var / lib / iscsi / device to identify
    start iscsi: [OK]
    [node02~ the root @] # 
    
    

2.2 Check whether the disk was found, as well as unloading equipment and login scsi

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1. [root @ node02〜]＃ll / dev / sdb
2. brw-rw ---- 1 root disks 8,8 Aug 16 00:48 / dev / sdb
3. [Root @ node02~] #lsblk #lsblk view block information command
4. Name MAJ: MIN RM RO Type Size MOUNTPOINT
   SDA. 8: 0 0 0 20G disk 
   ├─sda18: 1 0 200M 0 parts /
   boot├─sda28: 2 0 0 1OG parts /
   └─sda38: 0. 3 0 parts. 1G [the SWAP]
   11 SR0: 0 1 0 3.6G ROM / Media
   sdb 8:16 [NASB] 0 0 disk 5G 
6. [root @ node02〜]＃
7. [Root @ node02~] # tree / var / lib / iscsi /
8. In / var / lib in / of the iSCSI /
   ├──ifaces
   ├──ISNS
   ├── node
   │└──iqn.2016-08.cn.node01.www: target4_scan
   │└──192.168.137.101,3260,1
   │└─ ─ default
   ├──send_targets
   │└──192.168.137.101,3260
   │├──iqn.2016-08.cn.node01.www: target4_scan, 192.168.137.101,3260,1, by default -> a / var / lib in / iSCSI is /nodes/iqn.2016-08.cn.node01.www:target4_scan/192.168.137.101,3260,1
   │└──st_config
   ├──SLP
   └── static
   
   10 directory, 2 files
9. [Root @ node02~] #iscsiadm -m node -T iqn.2016-08.cn.node01.www: target4_scan -u # scsi unloading equipment
10. Cancellation of the session [sid: 1, target: iqn.2016-08.cn.node01.www: target4_scan, Portal: 192.168.137.101,3260]
11. Successful logout [sid: 1, target: iqn.2016-08.cn.node01.www: target4_scan, Portal: 192.168.137.101,3260].
12. [root @ node02〜]＃lsblk
13. Name MAJ: MIN RM RO Type Size MOUNTPOINT
    SDA. 8: 0 0 0 20G disk 
    ├─sda18: 1 0 200M 0 parts /
    boot├─sda28: 2 0 0 1OG parts /
    └─sda38: 0. 3 0 parts. 1G [the SWAP]
    sr0 11: 0 1 3.6G 0 rom / media
14. [Root @ node02~] #iscsiadm -m node -T iqn.2016-08.cn.node01.www: target4_scan -l # Login scsi devices
15. Login [iface: default target: iqn.2016-08.cn.node01.www: target4_scan, Portal: 192.168.137.101,3260] (more)
16. Successfully logged on to [iface: default target: iqn.2016-08.cn.node01.www: target4_scan, Portal: 192.168.137.101,3260].
17. [root @ node02〜]＃lsblk
18. Name MAJ: MIN RM RO Type Size MOUNTPOINT
    SDA. 8: 0 0 0 20G disk 
    ├─sda18: 1 0 200M 0 parts /
    boot├─sda28: 2 0 0 1OG parts /
    └─sda38: 0. 3 0 parts. 1G [the SWAP]
    11 SR0: 0 1 0 3.6G ROM / Media
    sdb 8:16 [NASB] 0 0 disk 5G 
19. [root @ node02〜]＃

2.3 scsi devices, and make a write operation

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1. [root @ node02〜]＃df -h
2. File system size has been used in the percentage of the available installed
3. / dev / sda2 9.9G 869M 8.5G 10％/
4. tmpfs 238M 0 238M 0％/ dev / shm
5. / Dev / sda1 194M 27M 158M 15% / boot
6. / Dev / sr0 3.6G 3.6G 0 100% / Media
8. [root @ node02〜]＃
9. [Root @ node02~] #fdisk / dev / sdb # partition
10.  
11. [Root @ node02~] # lsblk # view the partition block
12. NNAME MAJ: MIN RM RO Type Size MOUNTPOINT
    SDA. 8: 0 0 0 20G disk 
    ├─sda18: 1 0 200M 0 parts /
    boot├─sda28: 2 0 0 1OG parts /
    └─sda38: 0. 3 0 parts. 1G [the SWAP]
    . 11 SR0: 3.6G. 1 0 0 ROM / Media
    SDB. 5G 0 0 8:16 disk 
    └─sdb18: 17 0 5G 0 part 
14. [Root @ node02~] # mkfs.ext4 / dev / sdb1 # formatted partition
15. mke2fs 1.41.12 (2010 Nian 5 17 May)
16. File system label =
17. OS type: Linux
18. Block size = 4096 (log = 2)
19. Fragment size = 4096 (log = 2)
20. Stride = 0, stripe width = 0
21. Inode 328656, 1312222
22. Superuser has reserved blocks 65611 (5.00%)
23. The first data block = 0
24. Maximum number of blocks filesystem = 1346371584
25. Group 41
26. Each 32,768 blocks, each segment 32768
27. Each group inode 8016
28. Superblock stored on the backup block:
29. 32768、98304、163840、229376、294912、819200、884736
31. Writing inode table: Finish
32. Create a log (32768): Completed
33. Write super block and file system billing information: Completed
35. The installed file system will automatically check once every 21 times, or
36. 180 days, whichever comes first. Use tune2fs -c or -i coverage.
37. [Root @ node02~] #mkdir / scsi # Mount partition to the new directory / scsi
38. [root @ node02〜]＃mount / dev / sdb1 / scsi /
39. [root @ node02〜]＃df -h
40. File system size has been used in the percentage of the available installed
41. / dev / sda2 9.9G 869M 8.5G 10％/
42. tmpfs 238M 0 238M 0％/ dev / shm
43. / Dev / sda1 194M 27M 158M 15% / boot
44. / Dev / sr0 3.6G 3.6G 0 100% / Media
45. / dev / sdb1 5.0G 139M 4.6G 3％/ scsi
46. [Root @ node02~] #cp -r / root / * / scsi / # write verification
47. [root @ node02〜]＃ll / scsi /
48. A total of 36
49. -rw ------- 1 root 980, August 12 00:59 anaconda-ks.cfg
50. -rw-r - r-- 1 th root root 10197 Aug 12 00:59 install.log
51. -rw-r - r-- 1 th root root 3161 Aug 12 00:59 install.log.syslog
52. drwx ------ 2根root 16384 Aug 12 00:58 lost + found
53. [root @ node02〜]＃df -h / scsi /
54. File system size has been used in the percentage of the available installed
55. / dev / sdb1 5.0G 139M 4.6G 3％/ scsi
56. [root @ node02〜]＃

Third, additional client 192.168.137.103. 192.168.137.102 same operation is substantially similar, except that this is no longer necessary to format the partition

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1. [root @ node03〜]＃yum -y install iscsi-initiator-utils
2. [root @ node03〜]＃
3. [root @ node03〜]＃iscsiadm -m发现-t sendtargets -p 192.168.137.101
4. Start iscsid: [OK]
5. 192.168.137.101:3260,1 iqn.2016-08.cn.node01.www：target4_scan
6. [Root @ node03~] #yum -y installation tree
8. [Root @ node03~] # tree / var / lib / iscsi /
9. / var / lib / iscsi /
10. ├──ifaces
11. ├──isns
12. ├── node
13. │└──iqn.2016-08.cn.node01.www：target4_scan
14. │└──192.168.137.101,3260,1
15. │└── default
16. ├──send_targets
17. │└──192.168.137.101,3260
18. │├──iqn.2016-08.cn.node01.www：target4_scan，192.168.137.101,3260,1，默认-> /var/lib/iscsi/nodes/iqn.2016-08.cn.node01.www： target4_scan / 192.168.137.101,3260,1
19. │└──st_config
20. ├──slp
21. └── static
23. 10 directory, two files
25. [Root @ node03~] # / etc / init.d / iscsid restart
26. Stop iscsid:
27. Start iscsid: [OK]
28. [root @ node03〜]＃lsblk
29. Name MAJ: MIN RM RO Type Size MOUNTPOINT
    SDA. 8: 0 0 0 20G disk 
    ├─sda18: 1 0 200M 0 parts /
    boot├─sda28: 2 0 0 1OG parts /
    └─sda38: 0. 3 0 parts. 1G [the SWAP]
    sr0 11: 0 1 3.6G 0 rom / media
31. [Root @ node03~] # / etc / init.d / iscsi restart
32. Stop iscsi: [OK]
33. Start iscsi: [OK]
34. [Root @ node03~] # lsblk # can see the device sdb1
35. Name MAJ: MIN RM RO Type Size MOUNTPOINT
    SDA. 8: 0 0 0 20G disk 
    ├─sda18: 1 0 200M 0 parts /
    boot├─sda28: 2 0 0 1OG parts /
    └─sda38: 0. 3 0 parts. 1G [the SWAP]
    . 11 SR0: 3.6G. 1 0 0 ROM / Media
    SDB. 5G 0 0 8:16 disk 
    └─sdb18: 17 0 5G 0 part 
37. [root @ node03〜]＃
38. [root @ node03〜]＃
39. [root @ node03〜]＃mkdir / scsi           
40. [Root @ node03~] #mount / dev / sdb1 / scsi / # mount
41. [root @ node03〜]＃cd！$
42. cd / scsi /
43. [Root @ node03 scsi] # ll # can be seen in content written in node02
44. A total of 36
45. -rw ------- 1 root 980, August 12 00:59 anaconda-ks.cfg
46. -rw-r - r-- 1 th root root 10197 Aug 12 00:59 install.log
47. -rw-r - r-- 1 th root root 3161 Aug 12 00:59 install.log.syslog
48. drwx ------ 2根root 16384 Aug 12 00:58 lost + found
49. [Root @ node03 scsi] #cp / etc / passwd / scsi / # to write new passwd file on node03, node02 verification
50. [root @ node03 scsi]＃ll
51. A total of 40
52. -rw ------- 1 root 980, August 12 00:59 anaconda-ks.cfg
53. -rw-r - r-- 1 th root root 10197 Aug 12 00:59 install.log
54. -rw-r - r-- 1 th root root 3161 Aug 12 00:59 install.log.syslog
55. drwx ------ 2根root 16384 Aug 12 00:58 lost + found
56. -rw-r - r-- 1 th root root 901 Aug 12 01:11 passwd
57. [root @ node03 scsi]＃
58. # Passwd file in identifying alternative node02 node03 written, there is no synchronization, because we use the ext4 file system does not support the use of GFS can be synchronized
59. [root @ node02 scsi] #ll
    Total 36
    -rw ------- root. 1-Aug 12 is 00:59 Anaconda 980 the root-the ks.cfg
    -rw-R & lt - r--. 1 root root 10197 Aug 12 00: 59 the install.log
    -rw-R & lt - r--. 1 12 is root-Aug 3161 00:59 install.log.syslog the root
    drwx ------ 2 root root 16384 Aug 12 00:58 lost + found
    [root @ node02 scsi] #