标题：在AIX中如何使用vg镜像的方法将数据转移到新存储设备

产品：P-Server,DS4000,DS6000,DS8000

主机平台：IBM eServer pSerise

操作系统：AIX

其他软件版本：N/A

随着设备的更新，用户会经常遇到数据转移的问题。如何将老的存储设备上的数据转移到新的存储设备上呢？我们下面将举例子，讲解如何使用AIX的vg镜像的方法实现。

  mirrorvg功能可以将一个vg中的所有lv都进行mirror。

  mirror的目的地盘必须在同一个vg中。

  如果将一个vg中的所有逻辑卷进行 mklvcopy ，效果等同于mirrorvg。

{smit法：smit vg/Set Characteristics of a VolumeGroup/Add a Physical Volume to a Volume Group}

 

现有的环境：

我们有

2、1）本地磁盘（需要转储的源盘）：

pv:hdisk1

          vg:vg-local

                   lv:lv-local

                            fs:/mnt/lv-local

2、2）fastt上提供（与本实验无关）：

pv:hdisk2;hdisk3

          vg:vg-fastt600

                   lv:lv-fastt600-1

                            fs:/mnt/lv-fastt600-1

2、3）fastt上提供（需要转储的目的）提供了一个裸盘：pv:hdisk4

 

我们下面的操作是将数据从原始位置pv:hdisk1，移动到fastt上提供（需要转储的目的）提供了一个盘pv:hdisk4上。我们会利用IBM fastt 的管理软件观察目的盘hdisk4的流量。还要验证在这个过程中数据的访问是否中断以及移动的效率如何。

 

 

先将hdisk4上面的数据毁掉

p615:/>tar -cvf /dev/hdisk4 /etc

a /etc/test/b3 1 blocks.

a /etc/test/b4 1 blocks.

a /etc/test/b5 1 blocks.

a /etc/inittab.tsm 8 blocks.

……

检验是否毁掉

p615:/>tar–tvf /dev/hdisk4

-rw-r--r--  00      30 Oct 25 10:21:10 2004 /etc/test/b4

-rw-r--r--  00      31 Oct 25 10:21:29 2004 /etc/test/b5

-rw-------  00    3608 Dec 30 11:17:07 2004 /etc/inittab.tsm

drwxr-xr-x  00       0 Jul 16 10:44:15 2004 /etc/tivready/

……

查看当前情况，建立模拟环境

p615:/>lsvg -p vg-local

vg-local:

PV_NAME   PVSTATE   TOTAL PPs   FREE PPs   FREE DISTRIBUTION

hdisk1       active        8678        8672       1736..1730..1735..1735..1736

 

p615:/>lspv

hdisk0         005c39ff63baaa57                   rootvg         active

hdisk1         005c39ffbf1771fc                   vg-local       active

hdisk4         none                               None

hdisk2         0053f61fd0b7ca1e                   vg-fastt600    active

hdisk3         0053f5ffd0efed59                   vg-fastt600    active

为了观察fastt上的I/O情况，我们用StorageManager/Storage Subsystem/Monitor Performance

注：Logical Drive aix3是hdisk4

AIX系统如何导出镜像 aix 导入vg_数据

 

 

为了测试操作对I/O的连续性的影响，我们在另外的telnet中建立一个脚本work：

while [ "1" = "1" ]

do

   tar -cvf /mnt/lv-fastt600-1/usrlib.tar /mnt/lv-local/usrlib

   sleep 1

   tar -xvf /mnt/lv-fastt600-1/usrlib.tar /mnt/lv-local/usrlib

   sleep 1

done

让/mnt/lv-local文件系统持续被读写。

运行它：

p615:/>./work

……

a /mnt/lv-local/usrlib/libarm4.a 150 blocks.

a /mnt/lv-local/usrlib/libasl.a 395 blocks.

a /mnt/lv-local/usrlib/libauthm.a 22 blocks.

a /mnt/lv-local/usrlib/libc128.a 132 blocks.

a /mnt/lv-local/usrlib/libc_r.a 13847 blocks.

……

x /mnt/lv-local/usrlib/libasl.a, 202213 bytes, 395 media blocks.

x /mnt/lv-local/usrlib/libauthm.a, 11024 bytes, 22 media blocks.

x /mnt/lv-local/usrlib/libc128.a, 67571 bytes, 132 media blocks.

x /mnt/lv-local/usrlib/libc_r.a, 7089423 bytes, 13847 media blocks.

x /mnt/lv-local/usrlib/libc_t.a, 5152768 bytes, 10064 media blocks.

……

 

 

AIX系统如何导出镜像 aix 导入vg_f5_02

 

 

vg-local中加入新盘hdisk4（fastt600）

p615:/>extendvg vg-localhdisk4

0516-1254 extendvg: Changing the PVID in the ODM.

可以看到，33个I/O用于写VGDA等：

AIX系统如何导出镜像 aix 导入vg_AIX系统如何导出镜像_03

 

p615:/>lsvg -p vg-local

vg-local:

PV_NAME PVSTATE   TOTAL PPs   FREE PPs   FREE DISTRIBUTION

hdisk1     active        8678       8672        1736..1730..1735..1735..1736

hdisk4     active        7679       7679        1536..1536..1535..1536..1536

 

p615:/>lspv

hdisk0         005c39ff63baaa57                   rootvg         active

hdisk1         005c39ffbf1771fc                   vg-local       active

hdisk4         005c39ffaddfd60e                   vg-local       active

hdisk2         0053f61fd0b7ca1e                   vg-fastt600    active

hdisk3         0053f5ffd0efed59                   vg-fastt600    active

 

p615:/>lslv -m lv-local

lv-local:/mnt/lv-local

LP   PP1 PV1               PP2 PV2               PP3  PV3

0001 1738 hdisk1

0002 1739 hdisk1

0003 1740 hdisk1

0004 1741 hdisk1

0005 1742 hdisk1

 

 

建立vg的镜像

p615:/>mirrorvg vg-local hdisk4

0516-1125 mirrorvg: Quorum requirement turned off,varyoff and varyon

       volumegroup for this to take effect.

上面的操作使用了10秒钟

 


我们在另外的telnet中的work的I/O操作始终没有停止：

……

a /mnt/lv-local/usrlib/libasl.a 395 blocks.

a /mnt/lv-local/usrlib/libauthm.a 22 blocks.

a /mnt/lv-local/usrlib/libc128.a 132 blocks.

a /mnt/lv-local/usrlib/libc_r.a 13847 blocks.

……

x /mnt/lv-local/usrlib/libauthm.a, 11024 bytes, 22 media blocks.

x /mnt/lv-local/usrlib/libc128.a, 67571 bytes, 132 media blocks.

x /mnt/lv-local/usrlib/libc_r.a, 7089423 bytes, 13847 media blocks.

x /mnt/lv-local/usrlib/libc_t.a, 5152768 bytes, 10064 media blocks.

……

 

Logical Drive aix3的I/O持续增长：

 

AIX系统如何导出镜像 aix 导入vg_数据_04

 

查看结果：

p615:/>lspv
 
 
hdisk0         005c39ff63baaa57                   rootvg         active
 
 
hdisk1         005c39ffbf1771fc                   vg-local       active
 
 
hdisk4         005c39ffadf71984                   vg-local       active
 
 
hdisk2         0053f61fd0b7ca1e                   vg-fastt600    active
 
 
hdisk3         0053f5ffd0efed59                   vg-fastt600    active
 
 
 
 
 
p615:/>lslv lv-local
 
 
LOGICAL VOLUME:    lv-local              VOLUMEGROUP:  vg-local
 
 
LVIDENTIFIER:     005c39ff00004c0000000101a86ef484.3PERMISSION: read/write
 
 
VG STATE:          active/complete       LVSTATE:      opened/syncd
 
 
TYPE:              jfs                  WRITEVERIFY:  off
 
 
MAX LPs:           512                 PP SIZE:       4 megabyte(s)
 
 
COPIES:            2                  SCHEDPOLICY:  parallel
 
 
LPs:                5                   PPs:           10
 
 
STALE PPs:          0                   BBPOLICY:     relocatable
 
 
INTER-POLICY:      minimum            RELOCATABLE:   yes
 
 
INTRA-POLICY:      middle              UPPERBOUND:   32
 
 
MOUNT POINT:       /mnt/lv-local        LABEL:         /mnt/lv-local
 
 
MIRROR WRITE CONSISTENCY: on/ACTIVE
 
 
EACH LP COPY ON A SEPARATE PV ?: yes
 
 
Serialize IO ?:    NO
 
 
 
 
 
p615:/>lslv -l lv-local
 
 
lv-local:/mnt/lv-local
 
 
PV               COPIES       IN BAND      DISTRIBUTION
 
 
hdisk1           005:000:000  100%         000:005:000:000:000
 
 
hdisk4           005:000:000  100%         000:005:000:000:000
 
 
 
 
 
p615:/>lslv -m lv-local
 
 
lv-local:/mnt/lv-local
 
 
LP   PP1 PV1               PP2 PV2               PP3  PV3
 
 
0001 1738hdisk1           1538 hdisk4
 
 
0002 1739hdisk1           1539 hdisk4
 
 
0003 1740hdisk1           1540 hdisk4
 
 
0004 1741hdisk1           1541 hdisk4
 
 
0005 1742 hdisk1           1542 hdisk4

 

把老盘hdisk1从镜像的vg中祛除出来：

8秒
 
 
p615:/>unmirrorvg vg-local hdisk1
 
 
0516-1133 unmirrorvg: Quorum requirement turned on,varyoff and varyon
 
 
       volumegroup for this to take effect.
 
 
p615:/>lspv
 
 
hdisk0         005c39ff63baaa57                   rootvg         active
 
 
hdisk1         005c39ffbf1771fc                   vg-local       active
 
 
hdisk4         005c39ffadf71984                   vg-local       active
 
 
hdisk2         0053f61fd0b7ca1e                   vg-fastt600    active
 
 
hdisk3         0053f5ffd0efed59                   vg-fastt600    active
 
 
 
 
 
p615:/>reducevg vg-local hdisk1
 
 
 
 
 
p615:/>lspv
 
 
hdisk0         005c39ff63baaa57                   rootvg         active
 
 
hdisk1         005c39ffbf1771fc                   None
 
 
hdisk4         005c39ffadf71984                   vg-local       active
 
 
hdisk2         0053f61fd0b7ca1e                   vg-fastt600    active
 
 
hdisk3         0053f5ffd0efed59                   vg-fastt600    active
 
 
 
 
 
p615:/>lsvg -p vg-local
 
 
vg-local:
 
 
PV_NAME    PVSTATE     TOTAL PPs   FREE PPs   FREE DISTRIBUTION
 
 
hdisk4        active       7679       7673        1536..1530..1535..1536..1536

 

 


我们在另外的telnet中的work的I/O操作始终没有停止：


……

a /mnt/lv-local/usrlib/libasl.a 395 blocks.

a /mnt/lv-local/usrlib/libauthm.a 22 blocks.

a /mnt/lv-local/usrlib/libc128.a 132 blocks.

a /mnt/lv-local/usrlib/libc_r.a 13847 blocks.

……

x /mnt/lv-local/usrlib/libauthm.a, 11024 bytes, 22 media blocks.

x /mnt/lv-local/usrlib/libc128.a, 67571 bytes, 132 media blocks.

x /mnt/lv-local/usrlib/libc_r.a, 7089423 bytes, 13847 media blocks.

x /mnt/lv-local/usrlib/libc_t.a, 5152768 bytes, 10064 media blocks.

……


 

 

 

Logical Drive aix3的I/O持续增长：

AIX系统如何导出镜像 aix 导入vg_f5_05

 

查看结果

我们得到了一个被置换的vg:

p615:/>lsdev -Cc disk
 
 
hdisk0 Available 1S-08-00-8,0 16 Bit LVD SCSI Disk Drive
 
 
hdisk1 Available 1S-08-00-5,0 16 Bit LVD SCSI Disk Drive
 
 
hdisk2 Available 1n-08-01    1722-600 (600) Disk Array Device
 
 
hdisk3 Available 1H-08-01    1722-600 (600) Disk ArrayDevice
 
 
hdisk4 Available 1n-08-01    1722-600 (600) Disk Array Device
 
 
p615:/>lspv
 
 
hdisk0         005c39ff63baaa57                   rootvg         active
 
 
hdisk1         005c39ffbf1771fc                   None
 
 
hdisk4         005c39ffadf71984                   vg-local       active
 
 
hdisk2         0053f61fd0b7ca1e                   vg-fastt600    active
 
 
hdisk3         0053f5ffd0efed59                   vg-fastt600    active
 
 
p615:/>lsvg -p vg-local
 
 
vg-local:
 
 
PV_NAME   PV STATE     TOTAL PPs  FREE PPs  FREE DISTRIBUTION
 
 
hdisk4       active         7679       7673        1536..1530..1535..1536..1536
 
 
 
 
 
p615:/>lsvg -l vg-local
 
 
vg-local:
 
 
LV NAME      TYPE   LPs  PPs  PVs  LV STATE    MOUNT POINT
 
 
loglv00         jfslog   1    1    1    open/syncd    N/A
 
 
lv-local         jfs      5    5    1   open/syncd    /mnt/lv-local
 
 
 
 
 
p615:/>mount
 
 
 node      mounted        mounted over   vfs      date       options
 
 
-------- --------------- --------------- ------------------ ---------------
 
 
        /dev/hd4        /               jfs    Jan 17 17:15 rw,log=/dev/hd8
 
 
        /dev/hd2        /usr            jfs    Jan 17 17:15 rw,log=/dev/hd8
 
 
        /dev/hd9var     /var            jfs    Jan 17 17:15 rw,log=/dev/hd8
 
 
        /dev/hd3        /tmp            jfs    Jan 17 17:15 rw,log=/dev/hd8
 
 
        /dev/hd1        /home           jfs    Jan 17 17:17 rw,log=/dev/hd8
 
 
        /proc           /proc            procfs Jan 17 17:17 rw
 
 
        /dev/hd10opt    /opt             jfs    Jan 17 17:17 rw,log=/dev/hd8
 
 
        /dev/lv00       /ptf            jfs    Jan 17 17:17 rw,log=/dev/hd8
 
 
        /dev/lv01       /TSM            jfs    Jan 17 17:17 rw,log=/dev/hd8
 
 
        /dev/lv-fastt600-1 /mnt/lv-fastt600-1 jfs   Jan 25 17:28 rw,log=/dev/loglv03
 
 
        /dev/lv-local   /mnt/lv-local   jfs   Jan 26 15:10 rw,log=/dev/loglv00
 
 
 
 
 
p615:/>df
 
 
Filesystem   512-blocks     Free %Used   Iused %Iused Mounted on
 
 
/dev/hd4        2621440  2175192  18%    2256    1% /
 
 
/dev/hd2        6291456  1610328  75%   57768    8% /usr
 
 
/dev/hd9var      131072    73712  44%     835    6% /var
 
 
/dev/hd3        9437184  3330480  65%    6391    1% /tmp
 
 
/dev/hd1         131072    11952  91%     548    4% /home
 
 
/proc                 -        -   -        -    -  /proc
 
 
/dev/hd10opt     131072    85848  35%     404    3% /opt
 
 
/dev/lv00       4194304   776776  82%     486    1% /ptf
 
 
/dev/lv01      10354688  6409096  39%     942    1% /TSM
 
 
/dev/lv-fastt600-1 1966080 1885912  5%      18    1% /mnt/lv-fastt600-1
 
 
/dev/lv-local     40960    20944   49%      27    1% /mnt/lv-local
 
 
 
 
 
p615:/>

删除老盘：

p615:/>rmdev -dl hdisk1

hdisk1 deleted

p615:/>lsdev -Cc disk

hdisk0 Available 1S-08-00-8,0 16 Bit LVD SCSI Disk Drive

hdisk2 Available 1n-08-01    1722-600 (600) Disk Array Device

hdisk3 Available 1H-08-01    1722-600 (600) Disk Array Device

hdisk4 Available 1n-08-01    1722-600 (600) Disk Array Device

p615:/>lspv

hdisk0         005c39ff63baaa57                   rootvg         active

hdisk4         005c39ffadf71984                   vg-local       active

hdisk2         0053f61fd0b7ca1e                   vg-fastt600    active

hdisk3         0053f5ffd0efed59                   vg-fastt600    active

 

 

我们在另外的telnet中的work的I/O操作始终没有停止：

……

a /mnt/lv-local/usrlib/libasl.a 395 blocks.

a /mnt/lv-local/usrlib/libauthm.a 22 blocks.

a /mnt/lv-local/usrlib/libc128.a 132 blocks.

a /mnt/lv-local/usrlib/libc_r.a 13847 blocks.

……

x /mnt/lv-local/usrlib/libauthm.a, 11024 bytes, 22 media blocks.

x /mnt/lv-local/usrlib/libc128.a, 67571 bytes, 132 media blocks.

x /mnt/lv-local/usrlib/libc_r.a, 7089423 bytes, 13847 media blocks.

x /mnt/lv-local/usrlib/libc_t.a, 5152768 bytes, 10064 media blocks.

……

 

 

Logical Drive aix3的I/O持续增长：

 

 

 

用ctrl-c停止

 

我们在另外的telnet中用ctrl-c停止work：

……

a /mnt/lv-local/usrlib/libauthm.a 22 blocks.

a /mnt/lv-local/usrlib/libc128.a 132 blocks.

a /mnt/lv-local/usrlib/libc_r.a 13847 blocks.

a /mnt/lv-local/usrlib/libc_t.a 3007 blocks.

^Cp615:/>

 

 

 

看数据都正确（fastt）：

p615:/mnt/lv-local>cd usrlib
 
 
p615:/mnt/lv-local/usrlib>ls
 
 
libamqccu2a_r.a libarm4.a       libc128.a
 
 
libarm.a        libasl.a        libc_r.a
 
 
libarm2.a       libauthm.a      libc_t.a
 
 
 
 
 
p615:/mnt/lv-local/usrlib>lspv
 
 
hdisk0         005c39ff63baaa57                   rootvg         active
 
 
hdisk4         005c39ffadf71984                   vg-local       active
 
 
hdisk2         0053f61fd0b7ca1e                   vg-fastt600    active
 
 
hdisk3         0053f5ffd0efed59                   vg-fastt600    active
 
 
 
 
 
p615:/mnt/lv-local/usrlib>lsdev -Cc disk
 
 
hdisk0 Available 1S-08-00-8,0 16 Bit LVD SCSI Disk Drive
 
 
hdisk2 Available 1n-08-01    1722-600 (600) Disk Array Device
 
 
hdisk3 Available 1H-08-01    1722-600 (600) Disk Array Device
 
 
hdisk4 Available 1n-08-01    1722-600 (600) Disk Array Device