LINUX 11G RAC ASM磁盘组在线增加磁盘扩容
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LINUX 11G RAC ASM磁盘组在线增加磁盘扩容1.操作系统版本 OEL 6.1[root@cqltjcpt1 ~]# more /etc/redhat-release Red Hat Enterprise Linux Server release 6.1 (Santiago)2.数据库版本 oracle 11g racSQL> select * from v$version;BANNER--------------------------------------------------------------------------------Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit ProductionPL/SQL Release 11.2.0.3.0 - ProductionCORE 11.2.0.3.0 ProductionTNS for Linux: Version 11.2.0.3.0 - ProductionNLSRTL Version 11.2.0.3.0 - Production3.存储环境VMWARE exsi5.0虚拟EMC存储4.在节点1，2上查看所有系统磁盘[root@cqltjcpt1 ~]# fdisk -l | grep sd*Disk /dev/sda: 128.8 GB, 128849018880 bytes/dev/sda1 * 1 14 103424 83 Linux/dev/sda2 14 4191 33554432 82 Linux swap / Solaris/dev/sda3 4191 15666 92170240 8e Linux LVMDisk /dev/sdb: 2147 MB, 2147483648 bytes/dev/sdb1 1 261 2096451 83 LinuxDisk /dev/sdc: 2147 MB, 2147483648 bytes/dev/sdc1 1 261 2096451 83 LinuxDisk /dev/sdd: 2147 MB, 2147483648 bytes/dev/sdd1 1 261 2096451 83 LinuxDisk /dev/sde: 536.9 GB, 536870912000 bytes/dev/sde1 1 65270 524281243+ 83 LinuxDisk /dev/sdf: 536.9 GB, 536870912000 bytes/dev/sdf1 1 65270 524281243+ 83 LinuxDisk /dev/sdg: 536.9 GB, 536870912000 bytes/dev/sdg1 1 65270 524281243+ 83 LinuxDisk /dev/sdh: 214.7 GB, 214748364800 bytesDisk /dev/sdi: 107.4 GB, 107374182400 bytes5.当前系统硬盘为sda到sdi,现在需要增加一块500G的共享硬盘，来扩容ASM磁盘组,增加新硬盘后系统识别应为sdj查看伪文件系统下的/proc/scsi/scsi文件有scsi1,scsi2，scsi3 三个通道[root@cqltjcpt1 ~]# more /proc/scsi/scsi Attached devices:Host: scsi1 Channel: 00 Id: 00 Lun: 00 Vendor: NECVMWar Model: VMware IDE CDR10 Rev: 1.00 Type: CD-ROM ANSI SCSI revision: 05Host: scsi2 Channel: 00 Id: 00 Lun: 00 Vendor: VMware Model: Virtual disk Rev: 1.0 Type: Direct-Access ANSI SCSI revision: 02Host: scsi3 Channel: 00 Id: 00 Lun: 00 Vendor: VMware Model: Virtual disk Rev: 1.0 Type: Direct-Access ANSI SCSI revision: 02Host: scsi3 Channel: 00 Id: 01 Lun: 00 Vendor: VMware Model: Virtual disk Rev: 1.0 Type: Direct-Access ANSI SCSI revision: 02Host: scsi3 Channel: 00 Id: 02 Lun: 00 Vendor: VMware Model: Virtual disk Rev: 1.0 Type: Direct-Access ANSI SCSI revision: 02Host: scsi3 Channel: 00 Id: 03 Lun: 00 Vendor: VMware Model: Virtual disk Rev: 1.0 Type: Direct-Access ANSI SCSI revision: 02Host: scsi3 Channel: 00 Id: 04 Lun: 00 Vendor: VMware Model: Virtual disk Rev: 1.0 Type: Direct-Access ANSI SCSI revision: 02Host: scsi3 Channel: 00 Id: 05 Lun: 00 Vendor: VMware Model: Virtual disk Rev: 1.0 Type: Direct-Access ANSI SCSI revision: 02Host: scsi3 Channel: 00 Id: 06 Lun: 00 Vendor: VMware Model: Virtual disk Rev: 1.0 Type: Direct-Access ANSI SCSI revision: 02Host: scsi3 Channel: 00 Id: 08 Lun: 00 Vendor: VMware Model: Virtual disk Rev: 1.0 Type: Direct-Access ANSI SCSI revision: 02 6.在节点1,2执行echo 命令，[root@cqltjcpt1 ~]# echo "- - -" > /sys/class/scsi_host/host3/scan 当前的最大ID号为08，执行完echo命令后，系统的/proc/scsi/scsi文件下会出现ID为09的标识号如下：Host: scsi3 Channel: 00 Id: 09 Lun: 00 Vendor: VMware Model: Virtual disk Rev: 1.0 Type: Direct-Access ANSI SCSI revision: 02 7.分别在节点1,2查看/proc/scsi/scsi文件，此时节点1,2已识别到 Host: scsi3 Channel: 00 Id: 09 Lun: 00[root@cqltjcpt1 ~]# more /proc/scsi/scsi | grep 09Host: scsi3 Channel: 00 Id: 09 Lun: 00[root@cqltjcpt2 ~]# more /proc/scsi/scsi | grep 09Host: scsi3 Channel: 00 Id: 09 Lun: 008.在节点1上对sdj分区[root@cqltjcpt1 ~]#fdisk /dev/sdj[root@cqltjcpt1 ~]#partprobe9.节点1,2查看sdj1分区，以后成功识别[root@cqltjcpt1 ~]# fdisk -l | grep sdjDisk /dev/sdj: 536.9 GB, 536870912000 bytes/dev/sdj1 1 65270 524281243+ 83 Linux[root@cqltjcpt2 ~]# fdisk -l | grep sdjDisk /dev/sdj: 536.9 GB, 536870912000 bytes/dev/sdj1 10.节点1上用grid用户登录，查看当前ASM磁盘组[root@cqltjcpt1 ~]#su - grid查看asm磁盘组[grid@cqltjcpt1 ~]$sqlplus / as sysasmSQL> select group_number,name,TOTAL_MB, FREE_MB from v$asm_diskgroupGROUP_NUMBER NAME TOTAL_MB FREE_MB------------ ----------------- ---------- ---------- 1 CQDATA 1547972 525323 2 FRA 511993 477058 3 OCR 6141 574111.查看asm磁盘[root@cqltjcpt1 ~]# oracleasm listdisksDATA1DATA2FRAOCR_VOT1OCR_VOT2OCR_VOT312.现在是要将500G的磁盘扩容到CQDATA的ASM的磁盘组中去首先需要创建新的ASM磁盘节点1上执行[root@cqltjcpt1 ~]#oracleasm createdisk DATA3 /dev/sdj1[root@cqltjcpt1 ~]#oracleasm scandisks[root@cqltjcpt1 ~]#oracleasm listdisksDATA1DATA2DATA3FRAOCR_VOT1OCR_VOT2OCR_VOT3节点2上执行[root@cqltjcpt2 ~]# oracleasm scandisksReloading disk partitions: doneCleaning any stale ASM disks...Scanning system for ASM disks...[root@cqltjcpt2 ~]#oracleasm listdisksDATA1DATA2DATA3FRAOCR_VOT1OCR_VOT2OCR_VOT3 此时，节点1,2都已经识别到新的ASM磁盘DATA313.节点1执行，查看ASM磁盘，确定PATH[root@cqltjcpt1 ~]# su - grid[grid@cqltjcpt1 ~]$ sqlplus / as sysasmSQL> select name, path, mode_status, state, disk_number,failgroup from v$asm_disk;NAME PATH MODE_STATUS STATE DISK_NUMBER FAILGROUP-------- ------------------ -------------- ----------- ----------- ----------DATA1 ORCL:DATA1 ONLINE NORMAL 0 DATA1DATA2 ORCL:DATA2 ONLINE NORMAL 1 DATA2DATA3 ORCL:DATA3 ONLINE NORMAL 2 DATA3FRA ORCL:FRA ONLINE NORMAL 0 FRAOCR_VOT1 ORCL:OCR_VOT1 ONLINE NORMAL 0 OCR_VOT1OCR_VOT2 ORCL:OCR_VOT2 ONLINE NORMAL 1 OCR_VOT214.在节点1上，grid用户已sysasm登录ASM实例，给CQDATA磁盘组增加新的ASM磁盘DATA3SQL> alter diskgroup CQDATA add disk 'ORCL:DATA3' rebalance power 10;GROUP_NUMBER OPERATION STATE POWER ACTUAL SOFAR EST_WORK EST_RATE EST_MINUTES ERROR_CODE------------ ---------- -------- ---------- ---------- ---------- ---------- ---------- ----------- ---------- 1 REBAL RUN 1 1 130396 340324 1224 171查看当前reblance 时间，500G 需要1小时左右SQL>select * from v$asm_opration；GROUP_NUMBER OPERATION STATE POWER ACTUAL SOFAR EST_WORK EST_RATE EST_MINUTES ERROR_CODE------------ ---------- -------- ---------- ---------- ---------- ---------- ---------- ----------- ------------------------------ 1 REBAL RUN 1 1 13327 332978 1242 5715.当查询v$asm_operation时无数据输出时，意味着ASM的reblance动作结束SQL> select * from v$asm_operation;no rows selected修改reblance 参数为默认 SQL> ALTER DISKGROUP DATA1 REBALANCE POWER 1;16.在节点1,2上分别查询，以下结果SQL> SELECT,NAME,FREE_MB,TOTAL_MB FROM V$ASM_DISKGROUPNAME FREE_MB TOTAL_MB-------------------- ---------- ----------CQDATA 1025323 2047972FRA 477058 511993OCR 5741 6141CQDATA磁盘组已经成功完成扩容 本文基于VMware下测试，存储多路径问题在本实验已被vmware忽略，若有遗漏或不明处欢迎拍砖
