vg镜像的方法将数据转移到新存储设备.doc

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 Volume Group/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:hdisk1vg:vg-locallv:lv-localfs:/mnt/lv-local2、2）fastt上提供（与本实验无关）：pv:hdisk2;hdisk3vg:vg-fastt600lv: lv-fastt600-1fs: /mnt/lv-fastt600-12、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 /etca /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- 0 0 30 Oct 25 10:21:10 2004 /etc/test/b4-rw-r-r- 0 0 31 Oct 25 10:21:29 2004 /etc/test/b5-rw- 0 0 3608 Dec 30 11:17:07 2004 /etc/inittab.tsmdrwxr-xr-x 0 0 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-localvg-local:PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTIONhdisk1 active 8678 8672 1736.1730.1735.1735.1736p615:/lspvhdisk0 005c39ff63baaa57 rootvg activehdisk1 005c39ffbf1771fc vg-local activehdisk4 none Nonehdisk2 0053f61fd0b7ca1e vg-fastt600 activehdisk3 0053f5ffd0efed59 vg-fastt600 active为了观察fastt上的I/O情况，我们用Storage Manager/Storage Subsystem/Monitor Performance注：Logical Drive aix3是hdisk4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 1done让/mnt/lv-local文件系统持续被读写。运行它：p615:/./worka /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.vg-local中加入新盘hdisk4（fastt600）p615:/extendvg vg-local hdisk40516-1254 extendvg: Changing the PVID in the ODM.可以看到，33个I/O用于写VGDA等：p615:/lsvg -p vg-localvg-local:PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTIONhdisk1 active 8678 8672 1736.1730.1735.1735.1736hdisk4 active 7679 7679 1536.1536.1535.1536.1536p615:/lspvhdisk0 005c39ff63baaa57 rootvg activehdisk1 005c39ffbf1771fc vg-local activehdisk4 005c39ffaddfd60e vg-local activehdisk2 0053f61fd0b7ca1e vg-fastt600 activehdisk3 0053f5ffd0efed59 vg-fastt600 activep615:/lslv -m lv-locallv-local:/mnt/lv-localLP PP1 PV1 PP2 PV2 PP3 PV30001 1738 hdisk10002 1739 hdisk10003 1740 hdisk10004 1741 hdisk10005 1742 hdisk1建立vg的镜像p615:/mirrorvg vg-local hdisk40516-1125 mirrorvg: Quorum requirement turned off, varyoff and varyon volume group 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：查看结果：p615:/lspvhdisk0 005c39ff63baaa57 rootvg activehdisk1 005c39ffbf1771fc vg-local activehdisk4 005c39ffadf71984 vg-local activehdisk2 0053f61fd0b7ca1e vg-fastt600 activehdisk3 0053f5ffd0efed59 vg-fastt600 activep615:/lslv lv-localLOGICAL VOLUME: lv-local VOLUME GROUP: vg-localLV IDENTIFIER: 005c39ff00004c0000000101a86ef484.3 PERMISSION: read/writeVG STATE: active/complete LV STATE: opened/syncdTYPE: jfs WRITE VERIFY: offMAX LPs: 512 PP SIZE: 4 megabyte(s)COPIES: 2 SCHED POLICY: parallelLPs: 5 PPs: 10STALE PPs: 0 BB POLICY: relocatableINTER-POLICY: minimum RELOCATABLE: yesINTRA-POLICY: middle UPPER BOUND: 32MOUNT POINT: /mnt/lv-local LABEL: /mnt/lv-localMIRROR WRITE CONSISTENCY: on/ACTIVEEACH LP COPY ON A SEPARATE PV ?: yesSerialize IO ?: NOp615:/lslv -l lv-locallv-local:/mnt/lv-localPV COPIES IN BAND DISTRIBUTIONhdisk1 005:000:000 100% 000:005:000:000:000hdisk4 005:000:000 100% 000:005:000:000:000p615:/lslv -m lv-locallv-local:/mnt/lv-localLP PP1 PV1 PP2 PV2 PP3 PV30001 1738 hdisk1 1538 hdisk40002 1739 hdisk1 1539 hdisk40003 1740 hdisk1 1540 hdisk40004 1741 hdisk1 1541 hdisk40005 1742 hdisk1 1542 hdisk4把老盘hdisk1从镜像的vg中祛除出来：8秒p615:/unmirrorvg vg-local hdisk10516-1133 unmirrorvg: Quorum requirement turned on, varyoff and varyon volume group for this to take effect.p615:/lspvhdisk0 005c39ff63baaa57 rootvg activehdisk1 005c39ffbf1771fc vg-local activehdisk4 005c39ffadf71984 vg-local activehdisk2 0053f61fd0b7ca1e vg-fastt600 activehdisk3 0053f5ffd0efed59 vg-fastt600 activep615:/reducevg vg-local hdisk1p615:/lspvhdisk0 005c39ff63baaa57 rootvg activehdisk1 005c39ffbf1771fc Nonehdisk4 005c39ffadf71984 vg-local activehdisk2 0053f61fd0b7ca1e vg-fastt600 activehdisk3 0053f5ffd0efed59 vg-fastt600 activep615:/lsvg -p vg-localvg-local:PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTIONhdisk4 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：查看结果我们得到了一个被置换的vg:p615:/lsdev -Cc diskhdisk0 Available 1S-08-00-8,0 16 Bit LVD SCSI Disk Drivehdisk1 Available 1S-08-00-5,0 16 Bit LVD SCSI Disk Drivehdisk2 Available 1n-08-01 1722-600 (600) Disk Array Devicehdisk3 Available 1H-08-01 1722-600 (600) Disk Array Devicehdisk4 Available 1n-08-01 1722-600 (600) Disk Array Devicep615:/lspvhdisk0 005c39ff63baaa57 rootvg activehdisk1 005c39ffbf1771fc Nonehdisk4 005c39ffadf71984 vg-local activehdisk2 0053f61fd0b7ca1e vg-fastt600 activehdisk3 0053f5ffd0efed59 vg-fastt600 activep615:/lsvg -p vg-localvg-local:PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTIONhdisk4 active 7679 7673 1536.1530.1535.1536.1536p615:/lsvg -l vg-localvg-local:LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINTloglv00 jfslog 1 1 1 open/syncd N/Alv-local jfs 5 5 1 open/syncd /mnt/lv-localp615:/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/loglv00p615:/dfFilesystem 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-localp615:/删除老盘：p615:/rmdev -dl hdisk1hdisk1 deletedp615:/lsdev -Cc diskhdisk0 Available 1S-08-00-8,0 16 Bit LVD SCSI Disk Drivehdisk2 Available 1n-08-01 1722-600 (600) Disk Array Devicehdisk3 Available 1H-08-01 1722-600 (600) Disk Array Devicehdisk4 Available 1n-08-01 1722-600 (600) Disk Array Devicep615:/lspvhdisk0 005c39ff63baaa57 rootvg activehdisk4 005c39ffadf71984 vg-local activehdisk2 0053f61fd0b7ca1e vg-fastt600 activehdisk3 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