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asmlib创建的磁盘在线扩容

发布时间：2020-12-14 00:21:18 所属栏目：Linux 来源：网络整理
导读：说明 本环境的asm磁盘是通过asmlib创建的，不适用于scsi的磁盘。 新增磁盘为/dev/xvdd 操作过程 分区 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 [ [email?protected] ~]# fdisk /dev/xvdd Device contains neither a

说明

本环境的asm磁盘是通过asmlib创建的，不适用于scsi的磁盘。

新增磁盘为/dev/xvdd

操作过程

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       [
       
       [email?protected] ~]# fdisk /dev/xvdd 
      
      

      
      

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

      
      

       
       Building a new DOS disklabel with disk identifier 0x36af11d0.
      
      

      
      

       
       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)
      
      

      
      

      
      

       
       WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
      
      

      
      

       
                switch off the mode (command 'c') and change display units to
      
      

      
      

       
                sectors (command 'u').
      
      

      
      

      
      

       
       Command (m for help): n
      
      

      
      

       
       Command action
      
      

      
      

       
          e   extended
      
      

      
      

       
          p   primary partition (1-4)
      
      

      
      

       
       p
      
      

      
      

       
       Partition number (1-4): 1
      
      

      
      

       
       First cylinder (1-65270,default 1): 
      
      

      
      

       
       Using default value 1
      
      

      
      

       
       Last cylinder,+cylinders or +size{K,M,G} (1-65270,default 65270): 
      
      

      
      

       
       Using default value 65270
      
      

      
      

      
      

       
       Command (m for help): w
      
      

      
      

       
       The partition table has been altered!
      
      

      
      

      
      

       
       Calling ioctl() to re-read partition table.
      
      

      
      

       
       Syncing disks.
      
      

      
      

       
       [
       
       [email?protected] ~]#

查看现有ASM磁盘

      
      

       
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       [
       
       [email?protected] ~]# oracleasm listdisks
      
      

      
      

       
       DATA
      
      

      
      

       
       DATA2

添加新的asm磁盘

      
      

       
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       [
       
       [email?protected] ~]# oracleasm createdisk DATA3 /dev/xvdd1
      
      

      
      

       
       Writing disk header: done
      
      

      
      

       
       Instantiating disk: done
      
      

      
      

       
       [
       
       [email?protected] ~]# oracleasm listdisks
      
      

      
      

       
       DATA
      
      

      
      

       
       DATA2
      
      

      
      

       
       DATA3
      
      

      
      

       
       [
       
       [email?protected] ~]#

查看数据库中记录的asm磁盘

      
      

       
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       [
       
       [email?protected] ~]# su - grid
      
      

      
      

       
       [
       
       [email?protected] ~]$ sqlplus  / as sysasm 
      
      

      
      

      
      

       
       SQL*Plus: Release 12.2.0.1.0 Production on Thu Jan 11 19:42:07 2018
      
      

      
      

      
      

       
       Copyright (c) 1982,2016,Oracle.  All rights reserved.
      
      

      
      

      
      

      
      

       
       Connected to:
      
      

      
      

       
       Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
      
      

      
      

      
      

       
       SQL> select name,path,mode_status,state,disk_number,failgroup from v$asm_disk;
      
      

      
      

      
      

       
       NAME
      
      

      
      

       
       ------------------------------
      
      

      
      

       
       PATH
      
      

      
      

       
       --------------------------------------------------------------------------------
      
      

      
      

       
       MODE_ST STATE	 DISK_NUMBER FAILGROUP
      
      

      
      

       
       ------- -------- ----------- ------------------------------
      
      

      
      

      
      

       
       /dev/oracleasm/disks/DATA3
      
      

      
      

       
       ONLINE	NORMAL		   0
      
      

      
      

      
      

       
       DATA_0000
      
      

      
      

       
       /dev/oracleasm/disks/DATA
      
      

      
      

       
       ONLINE	NORMAL		   0 DATA_0000
      
      

      
      

      
      

       
       NAME
      
      

      
      

       
       ------------------------------
      
      

      
      

       
       PATH
      
      

      
      

       
       --------------------------------------------------------------------------------
      
      

      
      

       
       MODE_ST STATE	 DISK_NUMBER FAILGROUP
      
      

      
      

       
       ------- -------- ----------- ------------------------------
      
      

      
      

      
      

       
       DATA_0001
      
      

      
      

       
       /dev/oracleasm/disks/DATA2
      
      

      
      

       
       ONLINE	NORMAL		   1 DATA_0001
      
      

      
      

      
      

      
      

       
       SQL>

新增的asm磁盘为/dev/oracleasm/disks/DATA3

查看磁盘组名称

      
      

       
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       SQL> select group_number,name,TOTAL_MB,FREE_MB from v$asm_diskgroup
      
      

      
      

       
         2  ;
      
      

      
      

      
      

       
       GROUP_NUMBER NAME			      TOTAL_MB	  FREE_MB
      
      

      
      

       
       ------------ ------------------------------ ---------- ----------
      
      

      
      

       
       	   1 DATA			       1023988	    36588
      
      

      
      

      
      

       
       SQL>

DATA磁盘组就是要扩容的磁盘组

扩容DATA磁盘组

      
      

       
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       SQL> alter diskgroup DATA add disk '/dev/oracleasm/disks/DATA3' rebalance power 10;
      
      

      
      

      
      

       
       Diskgroup altered.
      
      

      
      

      
      

       
       SQL>

观察reblance

      
      

       
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       SQL> select * from v$asm_operation;
      
      

      
      

      
      

       
       GROUP_NUMBER OPERA PASS      STAT      POWER	 ACTUAL      SOFAR   EST_WORK
      
      

      
      

       
       ------------ ----- --------- ---- ---------- ---------- ---------- ----------
      
      

      
      

       
         EST_RATE EST_MINUTES ERROR_CODE					CON_ID
      
      

      
      

       
       ---------- ----------- -------------------------------------------- ----------
      
      

      
      

       
       	   1 REBAL COMPACT   WAIT	  10	     10 	 0	    0
      
      

      
      

       
       	 0	     0							     0
      
      

      
      

      
      

       
       	   1 REBAL REBALANCE RUN	  10	     10       5531	82304
      
      

      
      

       
             2268	    33							     0
      
      

      
      

      
      

       
       	   1 REBAL REBUILD   DONE	  10	     10 	 0	    0
      
      

      
      

       
       	 0	     0							     0
      
      

      
      

      
      

      
      

       
       SQL>

当没有输出时，则表明reblance完成

修改reblance power

      
      

       
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       ALTER DISKGROUP DATA REBALANCE POWER 1;

原文:大专栏 ?asmlib创建的磁盘在线扩容

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