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分类: LINUX

2009-10-26 10:17:36

CentOS5.4下单网卡多连接到一个iscsi target

实验环境:

客户端:

vmware上面虚拟的CentOS5.4 32bit

网卡1:192.168.198.91

网卡2:192.168.198.92

 

服务端:

vmware上面虚拟的openfiler2.3 32bit

网卡1192.168.198.90

卷信息,均模拟成iscsi形式:

Volume name

Volume description

Volume size

File system type

File system size

FS used space

FS free space

Delete

Properties

Snapshots

v1

v1

512 MB

iSCSI

Not applicable

Not applicable

Not applicable

In use

v2

v2

224 MB

iSCSI

Not applicable

Not applicable

Not applicable

In use

 

下面操作均为在客户端操作:

【发现iSCSI Target

[root@localhost iscsi]# iscsiadm -m discovery -t st -p 192.168.198.90:3260

192.168.198.90:3260,1 iqn.2006-01.com.openfiler:tsn.37314e76b65a

【登录iSCSI Target连接】

[root@localhost iscsi]# iscsiadm -m node -l

Logging in to [iface: default, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]

Login to [iface: default, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]: successful

【退出iSCSI Target 连接】

[root@localhost iscsi]# iscsiadm -m node -u

Logging out of session [sid: 1, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]

Logout of [sid: 1, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]: successful

 

【生成aaa,bbb,ccciSCSI访问接口文件】

 [root@localhost send_targets]# iscsiadm -m iface -I aaa --op=new

New interface aaa added

[root@localhost send_targets]# iscsiadm -m iface -I bbb --op=new

New interface bbb added

[root@localhost send_targets]# iscsiadm -m iface -I ccc --op=new

New interface ccc added

iSCSI生成的接口文件】

[root@localhost ifaces]# pwd

/var/lib/iscsi/ifaces

[root@localhost ifaces]# ll

total 12

-rw------- 1 root root 91 Oct 25 23:15 aaa

-rw------- 1 root root 91 Oct 25 23:15 bbb

-rw------- 1 root root 91 Oct 25 23:15 ccc

[root@localhost ifaces]#

 

【检查eth1MAC地址】

[root@localhost send_targets]# ifconfig eth1

eth1      Link encap:Ethernet  HWaddr 00:0C:29:6B:1D:0D 

          inet addr:192.168.198.92  Bcast:192.168.198.255  Mask:255.255.255.0

          inet6 addr: fe80::20c:29ff:fe6b:1d0d/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:2537 errors:0 dropped:0 overruns:0 frame:0

          TX packets:1910 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:3057486 (2.9 MiB)  TX bytes:163372 (159.5 KiB)

          Interrupt:193 Base address:0x2080

 

【绑定eth1MAC地址到访问接口文件】下面记录的是同一个MAC地址,意思是通过一个网卡(eth1)发起三个连接。

 [root@localhost iscsi]# iscsiadm -m iface -I aaa --op=update -n iface.hwaddress -v 00:0C:29:6B:1D:0D

aaa updated.

[root@localhost iscsi]# iscsiadm -m iface -I bbb --op=update -n iface.hwaddress -v 00:0C:29:6B:1D:0D

bbb updated.

[root@localhost iscsi]# iscsiadm -m iface -I ccc --op=update -n iface.hwaddress -v 00:0C:29:6B:1D:0D

ccc updated.

【发现Target

[root@localhost iscsi]# iscsiadm -m discovery -t st -p 192.168.198.90 -I aaa -I bbb -I ccc

192.168.198.90:3260,1 iqn.2006-01.com.openfiler:tsn.37314e76b65a

192.168.198.90:3260,1 iqn.2006-01.com.openfiler:tsn.37314e76b65a

192.168.198.90:3260,1 iqn.2006-01.com.openfiler:tsn.37314e76b65a

【通过iSCSI访问接口,aaa,bbb,ccc建立与Target的连接】

[root@localhost iscsi]# iscsiadm -m node -l

Logging in to [iface: aaa, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]

Logging in to [iface: bbb, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]

Logging in to [iface: ccc, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]

Login to [iface: aaa, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]: successful

Login to [iface: bbb, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]: successful

Login to [iface: ccc, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]: successful

【检查到Target的网络连接】

[root@localhost iscsi]# netstat -anp | grep 3260

tcp        0      0 192.168.198.92:44707        192.168.198.90:3260         ESTABLISHED 2519/iscsid        

tcp        0      0 192.168.198.92:44708        192.168.198.90:3260         ESTABLISHED 2519/iscsid        

tcp        0      0 192.168.198.92:44709        192.168.198.90:3260         ESTABLISHED 2519/iscsid        

tcp        0      0 192.168.198.91:59123        192.168.198.90:3260         TIME_WAIT   -                  

[root@localhost iscsi]#

【退出Target的连接】

[root@localhost iscsi]# iscsiadm -m node -u

Logging out of session [sid: 2, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]

Logging out of session [sid: 4, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]

Logging out of session [sid: 3, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]

Logout of [sid: 2, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]: successful

Logout of [sid: 4, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]: successful

Logout of [sid: 3, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]: successful

【退出的连接后,检查到Target的网络连接情况】

[root@localhost iscsi]# netstat -anp | grep 3260

tcp        0      0 192.168.198.91:59123        192.168.198.90:3260         TIME_WAIT   -                  

[root@localhost iscsi]#

 

 

 

 【检查mutipath映射的设备信息】

[root@localhost iscsi]# ls /dev/mapper/

VolGroup00-LogVol00  VolGroup00-LogVol01  control

[root@localhost iscsi]#

【重启multipath多路径软件】

root@localhost iscsi]# /etc/init.d/multipathd restart

Stopping multipathd daemon: [  OK  ]

Starting multipathd daemon: [  OK  ]

【检查并列出mutipath设备】

 [root@localhost iscsi]# multipath –ll

【刷新multiipath设备】

[root@localhost iscsi]# multipath -F

【检查mutipath服务信息】

[root@localhost iscsi]# multipath -v2

上面没有任何输出,说明多路径软件并没有查到多设备

 

【重新用iscsiadm登入一下。再用多路径软件查询就可以发现了】

 [root@localhost iscsi]#  iscsiadm -m node -l

Logging in to [iface: aaa, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]

Logging in to [iface: bbb, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]

Logging in to [iface: ccc, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]

Login to [iface: aaa, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]: successful

Login to [iface: bbb, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]: successful

Login to [iface: ccc, target: iqn.2006-01.com.openfiler:tsn.37314e76b65a, portal: 192.168.198.90,3260]: successful

因为我在openfiler这一端虚拟两块iscsi磁盘,下面显示两个设备的uuid,记下他们。

[root@localhost iscsi]# multipath -ll

14f504e46494c4500425450594d6d2d633859502d53304d4d dm-3 OPNFILER,VIRTUAL-DISK

[size=224M][features=0][hwhandler=0][rw]

\_ round-robin 0 [prio=1][active]

 \_ 5:0:0:1 sde 8:64  [active][ready]

\_ round-robin 0 [prio=1][enabled]

 \_ 6:0:0:1 sdf 8:80  [active][ready]

\_ round-robin 0 [prio=1][enabled]

 \_ 7:0:0:1 sdg 8:96  [active][ready]

14f504e46494c4500365178454b492d4a3473582d426f4f4d dm-2 OPNFILER,VIRTUAL-DISK

[size=512M][features=0][hwhandler=0][rw]

\_ round-robin 0 [prio=1][enabled]

 \_ 5:0:0:0 sdb 8:16  [active][ready]

\_ round-robin 0 [prio=1][enabled]

 \_ 6:0:0:0 sdc 8:32  [active][ready]

\_ round-robin 0 [prio=1][enabled]

 \_ 7:0:0:0 sdd 8:48  [active][ready]

[root@localhost iscsi]#

修改/etc/multipath.conf软件,添下如下内容:

multipaths {

       multipath {

               wwid                    14f504e46494c4500425450594d6d2d633859502d53304d4d

               alias                   iscsidisk1

               path_grouping_policy    multibus

               path_checker            readsector0

               path_selector           "round-robin 0"

               failback                manual

               rr_weight               priorities

               no_path_retry           5

       }

multipaths {

      multipath {

               wwid                    14f504e46494c4500365178454b492d4a3473582d426f4f4d

               alias                   iscsidisk2

               path_grouping_policy    multibus

               path_checker            readsector0

               path_selector           "round-robin 0"

               failback                manual

               rr_weight               priorities

               no_path_retry           5

       }

}

 

注释如下部分:

#blacklist {

#        devnode "*"

#}

这样mutlipath.conf就配置好了。

 

【重启multipath多路径软件】

[root@localhost iscsi]# /etc/init.d/multipathd restart

Stopping multipathd daemon: [  OK  ]

Starting multipathd daemon: [  OK  ]

 

 

【检查mutipath设备】

[root@localhost iscsi]# multipath -ll

iscsidisk2 (14f504e46494c4500365178454b492d4a3473582d426f4f4d) dm-2 OPNFILER,VIRTUAL-DISK

[size=512M][features=1 queue_if_no_path][hwhandler=0][rw]

\_ round-robin 0 [prio=1][enabled]

 \_ 5:0:0:0 sdb 8:16  [active][ready]

\_ round-robin 0 [prio=1][enabled]

 \_ 6:0:0:0 sdc 8:32  [active][ready]

\_ round-robin 0 [prio=1][enabled]

 \_ 7:0:0:0 sdd 8:48  [active][ready]

iscsidisk1 (14f504e46494c4500425450594d6d2d633859502d53304d4d) dm-3 OPNFILER,VIRTUAL-DISK

[size=224M][features=1 queue_if_no_path][hwhandler=0][rw]

\_ round-robin 0 [prio=1][active]

 \_ 5:0:0:1 sde 8:64  [active][ready]

\_ round-robin 0 [prio=1][enabled]

 \_ 6:0:0:1 sdf 8:80  [active][ready]

\_ round-robin 0 [prio=1][enabled]

 \_ 7:0:0:1 sdg 8:96  [active][ready]

[root@localhost iscsi]#

【刷新multiipath设备】

[root@localhost iscsi]# multipath –F

【检查mutipath服务信息】

[root@localhost iscsi]# multipath -v2

/sbin/scsi_id exitted with 1

error calling out /sbin/scsi_id -g -u -s /block/sda

/sbin/scsi_id exitted with 1

error calling out /sbin/scsi_id -g -u -s /block/sda

create: iscsidisk2 (14f504e46494c4500365178454b492d4a3473582d426f4f4d)  OPNFILER,VIRTUAL-DISK

[size=512M][features=0][hwhandler=0][n/a]

\_ round-robin 0 [prio=3][undef]

 \_ 5:0:0:0 sdb 8:16  [undef][ready]

 \_ 6:0:0:0 sdc 8:32  [undef][ready]

 \_ 7:0:0:0 sdd 8:48  [undef][ready]

create: iscsidisk1 (14f504e46494c4500425450594d6d2d633859502d53304d4d)  OPNFILER,VIRTUAL-DISK

[size=224M][features=0][hwhandler=0][n/a]

\_ round-robin 0 [prio=3][undef]

 \_ 5:0:0:1 sde 8:64  [undef][ready]

 \_ 6:0:0:1 sdf 8:80  [undef][ready]

 \_ 7:0:0:1 sdg 8:96  [undef][ready]

[root@localhost iscsi]#

【检查mutipath映射的设备信息】

[root@localhost mapper]# pwd

/dev/mapper

[root@localhost mapper]# ls -l

total 0

brw------- 1 root root 253,  0 Oct 25 23:13 VolGroup00-LogVol00

brw------- 1 root root 253,  1 Oct 25 23:12 VolGroup00-LogVol01

crw------- 1 root root  10, 63 Oct 25 23:12 control

brw-rw---- 1 root disk 253,  3 Oct 25 23:23 iscsidisk1

brw-rw---- 1 root disk 253,  2 Oct 25 23:23 iscsidisk2

[root@localhost mapper]#

 

 

【给磁盘分区】

[root@localhost mapper]# fdisk iscsidisk1

Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel

Building a new DOS disklabel. Changes will remain in memory only,

until you decide to write them. After that, of course, the previous

content won't be recoverable.

 

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

 

Command (m for help): p

 

Disk iscsidisk1: 234 MB, 234881024 bytes

255 heads, 63 sectors/track, 28 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

      Device Boot      Start         End      Blocks   Id  System

 

Command (m for help): n

 

Iscsidisk1分成三个分区:

Command (m for help): p

 

Disk iscsidisk1: 234 MB, 234881024 bytes

255 heads, 63 sectors/track, 28 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

      Device Boot      Start         End      Blocks   Id  System

iscsidisk1p1               1          10       80293+  83  Linux

iscsidisk1p2              11          20       80325   83  Linux

iscsidisk1p3              21          28       64260   83  Linux

 

Command (m for help): w

The partition table has been altered!

 

Calling ioctl() to re-read partition table.

 

WARNING: Re-reading the partition table failed with error 22: Invalid argument.

The kernel still uses the old table.

The new table will be used at the next reboot.

Syncing disks.

[root@localhost mapper]#

【给第二个设备分区】

fdisk iscsidisk2

Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel

Building a new DOS disklabel. Changes will remain in memory only,

until you decide to write them. After that, of course, the previous

content won't be recoverable.

 

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

 

Command (m for help): p

 

Disk iscsidisk2: 536 MB, 536870912 bytes

255 heads, 63 sectors/track, 65 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

      Device Boot      Start         End      Blocks   Id  System

 

Command (m for help): n

 

Command (m for help): p

 

Disk iscsidisk2: 536 MB, 536870912 bytes

255 heads, 63 sectors/track, 65 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

      Device Boot      Start         End      Blocks   Id  System

iscsidisk2p1               1          65      522081   83  Linux

 

Command (m for help): w

The partition table has been altered!

 

Calling ioctl() to re-read partition table.

 

WARNING: Re-reading the partition table failed with error 22: Invalid argument.

The kernel still uses the old table.

The new table will be used at the next reboot.

Syncing disks.

[root@localhost mapper]#

【同步数据,并且重启服务器】

 [root@localhost mapper]# sync

[root@localhost mapper]# sync

[root@localhost mapper]# reboot

 

Broadcast message from root (pts/0) (Sun Oct 25 23:24:50 2009):

 

The system is going down for reboot NOW!

[root@localhost mapper]#

【重启之后,经验证已经是三个连接到openfiler3260端口】

 [root@localhost ~]# netstat -anp | grep 3260

tcp        0      0 192.168.198.92:40831        192.168.198.90:3260         ESTABLISHED 1638/iscsid        

tcp        0      0 192.168.198.92:40833        192.168.198.90:3260         ESTABLISHED 1638/iscsid        

tcp        0      0 192.168.198.92:40832        192.168.198.90:3260         ESTABLISHED 1638/iscsid  

 

[root@localhost ~]# cd /dev/mapper/

[root@localhost mapper]# ls

VolGroup00-LogVol00  VolGroup00-LogVol01  control  iscsidisk1  iscsidisk1p1  iscsidisk1p2  iscsidisk1p3  iscsidisk2  iscsidisk2p1

[root@localhost mapper]# ls -l

total 0

brw------- 1 root root 253,  0 Oct 25 23:26 VolGroup00-LogVol00

brw------- 1 root root 253,  1 Oct 25 23:25 VolGroup00-LogVol01

crw------- 1 root root  10, 63 Oct 25 23:25 control

brw-rw---- 1 root disk 253,  3 Oct 25 23:26 iscsidisk1

brw-rw---- 1 root disk 253,  5 Oct 25 23:26 iscsidisk1p1

brw-rw---- 1 root disk 253,  6 Oct 25 23:26 iscsidisk1p2

brw-rw---- 1 root disk 253,  7 Oct 25 23:26 iscsidisk1p3

brw-rw---- 1 root disk 253,  2 Oct 25 23:26 iscsidisk2

brw-rw---- 1 root disk 253,  4 Oct 25 23:26 iscsidisk2p1

【可以直接生成ext3文件系统】

 [root@localhost mapper]# mkfs.ext3 iscsidiskp1

mke2fs 1.39 (29-May-2006)

Could not stat iscsidiskp1 --- No such file or directory

 

The device apparently does not exist; did you specify it correctly?

[root@localhost mapper]# mkfs.ext3 iscsidisk1p1

mke2fs 1.39 (29-May-2006)

Filesystem label=

OS type: Linux

Block size=1024 (log=0)

Fragment size=1024 (log=0)

20080 inodes, 80292 blocks

4014 blocks (5.00%) reserved for the super user

First data block=1

Maximum filesystem blocks=67371008

10 block groups

8192 blocks per group, 8192 fragments per group

2008 inodes per group

Superblock backups stored on blocks:

        8193, 24577, 40961, 57345, 73729

 

Writing inode tables: done                           

Creating journal (4096 blocks): done

Writing superblocks and filesystem accounting information: done

 

This filesystem will be automatically checked every 28 mounts or

180 days, whichever comes first.  Use tune2fs -c or -i to override.

[root@localhost mapper]#

做完文件系统后可以直接mount磁盘分区

 

[root@localhost multipath]#  mount -t ext3 /dev/mapper/iscsidisk1p1  /mnt

[root@localhost multipath]# df -h

Filesystem            Size  Used Avail Use% Mounted on

/dev/mapper/VolGroup00-LogVol00

                      5.7G  2.6G  2.9G  47% /

/dev/sda1              99M   12M   82M  13% /boot

tmpfs                 506M     0  506M   0% /dev/shm

/dev/mapper/iscsidisk1p1

                       76M  5.6M   67M   8% /mnt

[root@localhost multipath]#

 

【显示多路径设备】

[root@localhost multipath]# multipath -ll

iscsidisk2 (14f504e46494c4500365178454b492d4a3473582d426f4f4d) dm-2 OPNFILER,VIRTUAL-DISK

[size=512M][features=1 queue_if_no_path][hwhandler=0][rw]

\_ round-robin 0 [prio=3][active]

 \_ 2:0:0:0 sdc 8:32  [active][ready]

 \_ 3:0:0:0 sdd 8:48  [active][ready]

 \_ 1:0:0:0 sdb 8:16  [active][ready]

iscsidisk1 (14f504e46494c4500425450594d6d2d633859502d53304d4d) dm-3 OPNFILER,VIRTUAL-DISK

[size=224M][features=1 queue_if_no_path][hwhandler=0][rw]

\_ round-robin 0 [prio=3][active]

 \_ 2:0:0:1 sdf 8:80  [active][ready]

 \_ 1:0:0:1 sde 8:64  [active][ready]

 \_ 3:0:0:1 sdg 8:96  [active][ready]

注意上输出的磁盘符,是从sdb一直到sdg,一个6个,跟我开始三个连接,正好符合。正同是df –hfdisk -l列出来的结果。

[root@localhost multipath]# df -h

Filesystem            Size  Used Avail Use% Mounted on

/dev/mapper/VolGroup00-LogVol00

                      5.7G  2.6G  2.9G  47% /

/dev/sda1              99M   12M   82M  13% /boot

tmpfs                 506M     0  506M   0% /dev/shm

/dev/mapper/iscsidisk1p1

                       76M  5.6M   67M   8% /mnt

[root@localhost multipath]# fdisk -l

 

Disk /dev/sda: 8589 MB, 8589934592 bytes

255 heads, 63 sectors/track, 1044 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

   Device Boot      Start         End      Blocks   Id  System

/dev/sda1   *           1          13      104391   83  Linux

/dev/sda2              14        1044     8281507+  8e  Linux LVM

 

Disk /dev/sdb: 536 MB, 536870912 bytes

255 heads, 63 sectors/track, 65 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

   Device Boot      Start         End      Blocks   Id  System

/dev/sdb1               1          65      522081   83  Linux

 

Disk /dev/sdc: 536 MB, 536870912 bytes

255 heads, 63 sectors/track, 65 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

   Device Boot      Start         End      Blocks   Id  System

/dev/sdc1               1          65      522081   83  Linux

 

Disk /dev/sdd: 536 MB, 536870912 bytes

255 heads, 63 sectors/track, 65 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

   Device Boot      Start         End      Blocks   Id  System

/dev/sdd1               1          65      522081   83  Linux

 

Disk /dev/sdf: 234 MB, 234881024 bytes

255 heads, 63 sectors/track, 28 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

   Device Boot      Start         End      Blocks   Id  System

/dev/sdf1               1          10       80293+  83  Linux

/dev/sdf2              11          20       80325   83  Linux

/dev/sdf3              21          28       64260   83  Linux

 

Disk /dev/sde: 234 MB, 234881024 bytes

255 heads, 63 sectors/track, 28 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

   Device Boot      Start         End      Blocks   Id  System

/dev/sde1               1          10       80293+  83  Linux

/dev/sde2              11          20       80325   83  Linux

/dev/sde3              21          28       64260   83  Linux

 

Disk /dev/sdg: 234 MB, 234881024 bytes

255 heads, 63 sectors/track, 28 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

   Device Boot      Start         End      Blocks   Id  System

/dev/sdg1               1          10       80293+  83  Linux

/dev/sdg2              11          20       80325   83  Linux

/dev/sdg3              21          28       64260   83  Linux

 

Disk /dev/dm-2: 536 MB, 536870912 bytes

255 heads, 63 sectors/track, 65 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

     Device Boot      Start         End      Blocks   Id  System

/dev/dm-2p1               1          65      522081   83  Linux

 

Disk /dev/dm-3: 234 MB, 234881024 bytes

255 heads, 63 sectors/track, 28 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

     Device Boot      Start         End      Blocks   Id  System

/dev/dm-3p1               1          10       80293+  83  Linux

/dev/dm-3p2              11          20       80325   83  Linux

/dev/dm-3p3              21          28       64260   83  Linux

 

Disk /dev/dm-4: 534 MB, 534610944 bytes

255 heads, 63 sectors/track, 64 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

Disk /dev/dm-4 doesn't contain a valid partition table

 

Disk /dev/dm-5: 82 MB, 82220544 bytes

255 heads, 63 sectors/track, 9 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

Disk /dev/dm-5 doesn't contain a valid partition table

 

Disk /dev/dm-6: 82 MB, 82252800 bytes

255 heads, 63 sectors/track, 10 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

Disk /dev/dm-6 doesn't contain a valid partition table

 

Disk /dev/dm-7: 65 MB, 65802240 bytes

255 heads, 63 sectors/track, 8 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

Disk /dev/dm-7 doesn't contain a valid partition table

[root@localhost multipath]#

最后把启动磁盘和mount点对应添写到/etc/fstab,并且重启服务器,查看是否可以自动mount磁盘

/dev/mapper/iscsidisk1p1 /mnt                   ext3    defaults        1 2

重启后发现这个问题,文件系统变成read-only状态,不知如何修复-_-!

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