linux下asm磁盘扩容，此次扩容添加4块480G磁盘
第一步：multipath -ll ： 查看多路径映射磁盘（两节点都做）
配置 /etc/multipath.conf文件，配置新加磁盘的alias 的wwid （两节点都做）
第二步：停库 （最好停库，有时候start_udev容易发生磁盘错误） （两节点都做）
第三步： 1、multipath -F ： 删除现有路径 （两节点都做）
2、multipath -v2 ： 格式化路径 两节点都做）
3、multipath -ll ： 查看多路径 （两节点都做）
[root@chicbi1 bin]# multipath -F Dec 15 21:53:43 | mpathk: map in use [root@chicbi1 bin]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup-LogVol02 419G 33G 364G 9% / tmpfs 126G 72K 126G 1% /dev/shm /dev/sda1 194M 35M 150M 19% /boot /dev/mapper/VolGroup-LogVol01 99G 18G 76G 19% /u01 /dev/mapper/rman_vg-rman_lv 2.0T 994G 876G 54% /oracle_rman [root@chicbi1 bin]# [root@chicbi1 bin]# [root@chicbi1 bin]# [root@chicbi1 bin]# multipath -v2 Dec 15 21:54:03 | mpathb: ignoring map create: data3 (3600a0980383046304a5d4c68436b6775) undef NETAPP,LUN C-Mode size=480G features='3 queue_if_no_path pg_init_retries 50' hwhandler='0' wp=undef `-+- policy='round-robin 0' prio=50 status=undef |- 1:0:0:1 sdc 8:32 undef ready running `- 2:0:0:1 sdk 8:160 undef ready running create: ocr2 (3600a0980383046304a5d4c68436b6832) undef NETAPP,LUN C-Mode size=5.0G features='3 queue_if_no_path pg_init_retries 50' hwhandler='0' wp=undef `-+- policy='round-robin 0' prio=50 status=undef |- 1:0:0:5 sdg 8:96 undef ready running `- 2:0:0:5 sdo 8:224 undef ready running create: ocr1 (3600a0980383046304a5d4c68436b6777) undef NETAPP,LUN C-Mode size=5.0G features='3 queue_if_no_path pg_init_retries 50' hwhandler='0' wp=undef `-+- policy='round-robin 0' prio=50 status=undef |- 1:0:0:3 sde 8:64 undef ready running `- 2:0:0:3 sdm 8:192 undef ready running create: data1 (3600a0980383046304a5d4c68436b6774) undef NETAPP,LUN C-Mode size=480G features='3 queue_if_no_path pg_init_retries 50' hwhandler='0' wp=undef
第四步：配置udev规则 （两节点都做），此次添加四块磁盘
for i in data4 data5 data6 data7; do echo "KERNEL==\"dm-*\", SUBSYSTEM==\"block\", PROGRAM==\"/sbin/scsi_id --whitelisted --replace-whitespace --device=/dev/\$name\", RESULT==\"`/sbin/scsi_id --whitelisted --replace-whitespace --device=/dev/mapper/$i`\", NAME=\"asm$i\", OWNER=\"grid\", GROUP=\"asmadmin\", MODE=\"0660\"" >> /etc/udev/rules.d/99-oracle-asmdevices.rules done
查看udev规则，确认配置正确： （两节点都做）
[root@chicbi1 rules.d]# cat 99-oracle-asmdevices.rules KERNEL=="dm-*", SUBSYSTEM=="block", PROGRAM=="/sbin/scsi_id --whitelisted --replace-whitespace --device=/dev/$name", RESULT=="3600a0980383046304a5d4c68436b6777", NAME="asmocr1", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="dm-*", SUBSYSTEM=="block", PROGRAM=="/sbin/scsi_id --whitelisted --replace-whitespace --device=/dev/$name", RESULT=="3600a0980383046304a5d4c68436b6832", NAME="asmocr2", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="dm-*", SUBSYSTEM=="block", PROGRAM=="/sbin/scsi_id --whitelisted --replace-whitespace --device=/dev/$name", RESULT=="3600a0980383046304a5d4c68436b6778", NAME="asmocr3", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="dm-*", SUBSYSTEM=="block", PROGRAM=="/sbin/scsi_id --whitelisted --replace-whitespace --device=/dev/$name", RESULT=="3600a0980383046304a5d4c68436b6774", NAME="asmdata1", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="dm-*", SUBSYSTEM=="block", PROGRAM=="/sbin/scsi_id --whitelisted --replace-whitespace --device=/dev/$name", RESULT=="3600a0980383046304a5d4c68436b6835", NAME="asmdata2", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="dm-*", SUBSYSTEM=="block", PROGRAM=="/sbin/scsi_id --whitelisted --replace-whitespace --device=/dev/$name", RESULT=="3600a0980383046304a5d4c68436b6775", NAME="asmdata3", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="dm-*", SUBSYSTEM=="block", PROGRAM=="/sbin/scsi_id --whitelisted --replace-whitespace --device=/dev/$name", RESULT=="3600a0980383046304a5d4c68436b6844", NAME="asmdata4", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="dm-*", SUBSYSTEM=="block", PROGRAM=="/sbin/scsi_id --whitelisted --replace-whitespace --device=/dev/$name", RESULT=="3600a0980383046304a5d4c68436b6849", NAME="asmdata5", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="dm-*", SUBSYSTEM=="block", PROGRAM=="/sbin/scsi_id --whitelisted --replace-whitespace --device=/dev/$name", RESULT=="3600a0980383046304a5d4c68436b684b", NAME="asmdata6", OWNER="grid", GROUP="asmadmin", MODE="0660" KERNEL=="dm-*", SUBSYSTEM=="block", PROGRAM=="/sbin/scsi_id --whitelisted --replace-whitespace --device=/dev/$name", RESULT=="3600a0980383046304a5d4c68436b684c", NAME="asmdata7", OWNER="grid", GROUP="asmadmin", MODE="0660"
[root@chicbi1 rules.d]# start_udev （两节点都做）
Starting udev: [ OK ]
[root@chicbi1 rules.d]# ll /dev/asm*
brw-rw---- 1 grid asmadmin 253, 5 Dec 15 22:00 /dev/asmdata1
brw-rw---- 1 grid asmadmin 253, 6 Dec 15 22:00 /dev/asmdata2
brw-rw---- 1 grid asmadmin 253, 2 Dec 15 21:54 /dev/asmdata3
brw-rw---- 1 grid asmadmin 253, 8 Dec 15 22:00 /dev/asmdata4
brw-rw---- 1 grid asmadmin 253, 12 Dec 15 22:00 /dev/asmdata5
brw-rw---- 1 grid asmadmin 253, 13 Dec 15 22:00 /dev/asmdata6
brw-rw---- 1 grid asmadmin 253, 14 Dec 15 22:00 /dev/asmdata7
brw-rw---- 1 grid asmadmin 253, 4 Dec 15 22:00 /dev/asmocr1
brw-rw---- 1 grid asmadmin 253, 3 Dec 15 22:00 /dev/asmocr2
brw-rw---- 1 grid asmadmin 253, 7 Dec 15 22:00 /dev/asmocr3
SQL> select GROUP_NUMBER,DISK_NUMBER, MODE_STATUS,HEADER_STATUS, MODE_STATUS,state,TOTAL_MB,FREE_MB,name,PATH from v$asm_disk; GROUP_NUMBER DISK_NUMBER MODE_STATUS HEADER_STATUS MODE_STATUS STATE TOTAL_MB FREE_MB NAME PATH ------------ ----------- -------------- ------------------------ -------------- ---------------- ---------- ---------- ------------------------------------------------------------ -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 0 0 ONLINE CANDIDATE ONLINE NORMAL 0 0 /dev/asmdata4 0 1 ONLINE CANDIDATE ONLINE NORMAL 0 0 /dev/asmdata7 0 2 ONLINE CANDIDATE ONLINE NORMAL 0 0 /dev/asmdata6 0 3 ONLINE CANDIDATE ONLINE NORMAL 0 0 /dev/asmdata5 2 2 ONLINE MEMBER ONLINE NORMAL 5120 4772 OCR_0002 /dev/asmocr3 1 1 ONLINE MEMBER ONLINE NORMAL 491568 74540 DATA_0001 /dev/asmdata2 1 0 ONLINE MEMBER ONLINE NORMAL 491568 74545 DATA_0000 /dev/asmdata1 2 0 ONLINE MEMBER ONLINE NORMAL 5120 4776 OCR_0000 /dev/asmocr1 2 1 ONLINE MEMBER ONLINE NORMAL 5120 4772 OCR_0001 /dev/asmocr2 1 2 ONLINE MEMBER ONLINE NORMAL 491568 74552 DATA_0002
[grid@chicbi1 ~]$ sqlplus / as sysasm （单节点执行）
SQL*Plus: Release 11.2.0.4.0 Production on Sun Dec 16 02:24:49 2018
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
SQL> set time on 02:25:06 SQL> set timing on 02:25:08 SQL> alter diskgroup DATA add disk '/dev/asmdata4' rebalance power 10 ; alter diskgroup DATA add disk '/dev/asmdata5' rebalance power 10; alter diskgroup DATA add disk '/dev/asmdata6' rebalance power 10; alter diskgroup DATA add disk '/dev/asmdata7' rebalance power 10; Diskgroup altered. Elapsed: 00:00:11.51 02:25:28 SQL> Diskgroup altered. Elapsed: 00:00:15.13 02:25:43 SQL> Diskgroup altered. Elapsed: 00:00:15.09 02:25:58 SQL> Diskgroup altered. Elapsed: 00:00:13.20 02:27:37 SQL> 02:27:37 SQL> 02:27:37 SQL>
查看扩容后配置：
02:28:30 SQL> set lines 1000 pages 1000 02:28:38 SQL> select name,free_mb/1024,total_mb/1024 from v$asm_diskgroup; NAME FREE_MB/1024 TOTAL_MB/1024 -------------------- ------------ ------------- DATA 2138.70801 3360.47656 OCR 13.984375 15 select GROUP_NUMBER,DISK_NUMBER, MODE_STATUS,HEADER_STATUS, MODE_STATUS,state,TOTAL_MB,FREE_MB,name,PATH from v$asm_disk; GROUP_NUMBER DISK_NUMBER MODE_STATUS HEADER_STATUS MODE_STATUS STATE TOTAL_MB FREE_MB NAME PATH ------------ ----------- -------------- ------------------------ -------------- ---------------- ---------- ---------- ------------------------------------------------------------ -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 1 4 ONLINE MEMBER ONLINE NORMAL 491568 478768 DATA_0004 /dev/asmdata4 1 7 ONLINE MEMBER ONLINE NORMAL 491644 478845 DATA_0007 /dev/asmdata7 1 6 ONLINE MEMBER ONLINE NORMAL 491644 478841 DATA_0006 /dev/asmdata6 1 5 ONLINE MEMBER ONLINE NORMAL 491568 478768 DATA_0005 /dev/asmdata5 2 2 ONLINE MEMBER ONLINE NORMAL 5120 4772 OCR_0002 /dev/asmocr3 1 1 ONLINE MEMBER ONLINE NORMAL 491568 91600 DATA_0001 /dev/asmdata2 1 0 ONLINE MEMBER ONLINE NORMAL 491568 91605 DATA_0000 /dev/asmdata1 2 0 ONLINE MEMBER ONLINE NORMAL 5120 4776 OCR_0000 /dev/asmocr1 2 1 ONLINE MEMBER ONLINE NORMAL 5120 4772 OCR_0001 /dev/asmocr2 1 2 ONLINE MEMBER ONLINE NORMAL 491568 91610 DATA_0002