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明确htrac数据库存储迁移需求
将现有的EMC存储替换为PowerStore X1000存储，采用asm rebalance技术进行在线迁移。
前期准备工作
查看ASM磁盘组信息
- login in as grid user
$ asmcmd lsdg
[grid@htrac1 ~]$ asmcmd lsdg State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name MOUNTED EXTERN N 512 4096 1048576 624628 183534 0 183534 0 N DATA/ MOUNTED EXTERN N 512 4096 1048576 102398 27343 0 27343 0 N RECO/ MOUNTED NORMAL N 512 4096 1048576 15345 14419 5115 4652 0 Y SYSTEM/
查看ASM 磁盘空间使用情况
- login in as grid user
$ asmcmd lsdsk -k
Total_MB Free_MB OS_MB Name Failgroup Failgroup_Type Library Label UDID Product Redund Path
307196 90267 307196 DATA1 DATA1 REGULAR ASM Library - Generic Linux, version 2.0.4 (KABI_V2) DATA1 UNKNOWN ORCL:DATA1
112635 33092 112635 DATA2 DATA2 REGULAR ASM Library - Generic Linux, version 2.0.4 (KABI_V2) DATA2 UNKNOWN ORCL:DATA2
204797 60175 204797 DATA3 DATA3 REGULAR ASM Library - Generic Linux, version 2.0.4 (KABI_V2) DATA3 UNKNOWN ORCL:DATA3
5115 4807 5115 OCR1 OCR1 REGULAR ASM Library - Generic Linux, version 2.0.4 (KABI_V2) OCR1 UNKNOWN ORCL:OCR1
5115 4805 5115 OCR2 OCR2 REGULAR ASM Library - Generic Linux, version 2.0.4 (KABI_V2) OCR2 UNKNOWN ORCL:OCR2
5115 4807 5115 OCR3 OCR3 REGULAR ASM Library - Generic Linux, version 2.0.4 (KABI_V2) OCR3 UNKNOWN ORCL:OCR3
102398 27343 102398 RECO1 RECO1 REGULAR ASM Library - Generic Linux, version 2.0.4 (KABI_V2) RECO1 UNKNOWN ORCL:RECO1$ sqlplus / as sysasm
SQL> set linesize 300 column path format a50 column NAME format a15; select GROUP_NUMBER,DISK_NUMBER,HEADER_STATUS,MODE_STATUS,MOUNT_STATUS,STATE,total_mb,free_mb,NAME,PATH from v$asm_disk; GROUP_NUMBER DISK_NUMBER HEADER_STATUS MODE_STATUS MOUNT_STATUS TOTAL_MB FREE_MB NAME PATH ------------ ----------- ------------------------ -------------- -------------- ---------- ---------- ---------------- -------------------- 2 0 MEMBER ONLINE CACHED 30719690267 DATA1 ORCL:DATA1 1 0 MEMBER ONLINE CACHED 5115 4807 OCR1 ORCL:OCR1 1 1 MEMBER ONLINE CACHED 5115 4805 OCR2 ORCL:OCR2 1 2 MEMBER ONLINE CACHED 5115 4807 OCR3 ORCL:OCR3 3 0 MEMBER ONLINE CACHED 10239827343 RECO1 ORCL:RECO1 2 1 MEMBER ONLINE CACHED 11263533092 DATA2 ORCL:DATA2 2 2 MEMBER ONLINE CACHED 20479760175 DATA3 ORCL:DATA3 7 rows selected.
[grid@htrac1 ~]$ crsctl query css votedisk ## STATE File Universal Id File Name Disk group -- ----- ----------------- --------- --------- 1. ONLINE 6a7669a7d58c4f22bf06341bbacde673 (ORCL:OCR1) [SYSTEM] 2. ONLINE 076dc3fef5374f2cbf8af0958ffc5a9b (ORCL:OCR2) [SYSTEM] 3. ONLINE 9f6d65dc01364feebf566749760ced41 (ORCL:OCR3) [SYSTEM]
/etc/init.d/oracleasm querydisk -d OCR1
/etc/init.d/oracleasm querydisk -d OCR2
/etc/init.d/oracleasm querydisk -d OCR3
给htrac数据库虚拟化分配共享vmdk磁盘
参考VMware KB 1034165
htrac数据库存储迁移步骤
查看并确认新挂载的磁盘状态
$ lsblk
[root@htrac1 ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT loop0 7:0 0 3.6G 0 loop /mnt sr0 11:0 1 3.6G 0 rom sdb 8:16 0 5G 0 disk `-sdb1 8:17 0 5G 0 part sdc 8:32 0 5G 0 disk `-sdc1 8:33 0 5G 0 part sde 8:64 0 300G 0 disk `-sde1 8:65 0 300G 0 part sda 8:0 0 300G 0 disk |-sda1 8:1 0 500M 0 part /boot `-sda2 8:2 0 299.5G 0 part |-vg_htdb1-lv_root (dm-0) 253:0 0 83.5G 0 lvm / |-vg_htdb1-lv_swap (dm-1) 253:1 0 16G 0 lvm [SWAP] `-vg_htdb1-lv_backup (dm-2) 253:2 0 300G 0 lvm /backup sdd 8:48 0 5G 0 disk `-sdd1 8:49 0 5G 0 part sdf 8:80 0 100G 0 disk `-sdf1 8:81 0 100G 0 part sdg 8:96 0 100G 0 disk `-vg_htdb1-lv_backup (dm-2) 253:2 0 300G 0 lvm /backup sdh 8:112 0 110G 0 disk `-sdh1 8:113 0 110G 0 part sdi 8:128 0 200G 0 disk `-sdi1 8:129 0 200G 0 part
* 结合dmesg命令输出确认新增加的磁盘信息
分区对齐
分区LUN时，建议分区对齐1M边界。使用 fdisk 或 parted 创建分区。但是，只有 parted 可以创建大于 2 TB 的分区。 本项目中将使用 parted 创建分区
在创建分区之前，将设备标记为 GPT。然后，指定分区偏移量为 2048 扇区（1M）。以下命令创建一个占用整个 LUN 的分区。创建分区后，使用分区文件 /dev/mapper/ora-asm-data-001p1 创建 ASMLib 卷。
parted /dev/sdj mklabel gpt mkpart primary 2048s 100%
将磁盘X1000-DATA01p1、X1000-DATA02p1、X1000-DATA03p1、X1000-DATA04p1加入到 DATA
确认asm能够识别到udev规则生效后的磁盘
- login in as grid user
$ sqlplus / as sysasm
SQL> select GROUP_NUMBER,DISK_NUMBER,HEADER_STATUS,MODE_STATUS,MOUNT_STATUS,STATE,total_mb,free_mb,NAME,PATH from v$asm_disk;
首先在DATA中加入X1000存储的DATA LUN
alter diskgroup DATA add disk '/dev/oracleasm/disks/X1000-DATA01p1' rebalance power 8;
alter diskgroup DATA add disk '/dev/oracleasm/disks/X1000-DATA02p1' rebalance power 12;
SQL> select * from v$asm_operation;
GROUP_NUMBER OPERA STAT POWER ACTUAL SOFAR EST_WORK EST_RATE EST_MINUTES ERROR_CODE
------------ ----- ---- ---------- ---------- ---------- ---------- ---------- ----------- --------------------------------------------
2 REBAL RUN 11 11 11870 851620 37158 22alter diskgroup DATA add disk '/dev/oracleasm/disks/X1000-DATA03p1' rebalance power 12;
alter diskgroup DATA add disk '/dev/oracleasm/disks/X1000-DATA04p1' rebalance power 12;
SQL> alter diskgroup DATA add disk '/dev/oracleasm/disks/X1000-DATA05p1','/dev/oracleasm/disks/X1000-DATA06p1' rebalance power 12; Diskgroup altered. $ tail -f /u01/app/grid/diag/asm/+asm/+ASM/trace/alert.log SQL> alter diskgroup DATA add disk '/dev/oracleasm/disks/X1000-DATA05p1','/dev/oracleasm/disks/X1000-DATA06p1' rebalance power 12
备注：尽量在业务不繁忙的情况下操作;
然后在REDOVG中加入X1000存储的REDO LUN
alter diskgroup REDOVG add disk '/dev/oracleasm/disks/X1000-REDO01p1' rebalance power 8;
SQL> select * from v$asm_operation;
GROUP_NUMBER OPERA STAT POWER ACTUAL SOFAR EST_WORK EST_RATE EST_MINUTES ERROR_CODE
------------ ----- ---- ---------- ---------- ---------- ---------- ---------- ----------- --------------------------------------------
2 REBAL RUN 11 11 1082386 1082386 0 0
3 REBAL WAIT 8
$ tail -f alert_+ASM.logalter diskgroup REDOVG add disk '/dev/oracleasm/disks/X1000-REDO02p1' rebalance power 5;
查看rebalance情况与日志对比
- login in as grid user
使用以下命令查看观察:当没有输出时则表明reblance完成。
select * from v$asm_operation;
* 以下为加第一块时的输出，看EST_MINUTES大约需要29分钟。
SQL> select * from v$asm_operation;
GROUP_NUMBER OPERA STAT POWER ACTUAL SOFAR EST_WORK EST_RATE EST_MINUTES ERROR_CODE
------------ ----- ---- ---------- ---------- ---------- ---------- ---------- ----------- --------------------------------------------
2 REBAL RUN 8 8 33691 830701 26839 29$ asmcmd lsdsk -k
[grid@MCPOS-HOST-01 ~]$ asmcmd lsdsk -k
$ asmcmd -p lsop Group_Name Dsk_Num State Power EST_WORK EST_RATE EST_TIME DATA REBAL RUN 8 830701 0 0 $ tail -f alert.log
备注：确认所有磁盘rebalance完成后，再进行下一步删盘操作； 尽量在业务不繁忙的情况下操作;
逐次剔除旧存储AFF8040对应的asm disk
DROP AFF8040 REDOVG MEMBERs
sqlplus -s '/ as sysasm' << "EOF" alter diskgroup REDOVG drop disk REDOVG_0002 rebalance power 11; EOF
sqlplus -s '/ as sysasm' << "EOF" alter diskgroup REDOVG drop disk REDOVG_0003 rebalance power 11; EOF
DROP AFF8040 DATA MEMBERs
RETVAL=`sqlplus -s '/ as sysasm' << "EOF" select * from v$asm_operation; EXIT; EOF` if [ -z "$RETVAL" ]; then echo "No rows returned from database" exit 0 else echo $RETVAL echo "DROP FAILED" fi
sqlplus -s '/ as sysasm' << "EOF" alter diskgroup DATA drop disk DATA_0003 rebalance power 11; EOF
sqlplus -s '/ as sysasm' << "EOF" alter diskgroup DATA drop disk DATA_0004 rebalance power 11; EOF
sqlplus -s '/ as sysasm' << "EOF" alter diskgroup DATA drop disk DATA_0005 rebalance power 11; EOF
sqlplus -s '/ as sysasm' << "EOF" alter diskgroup DATA drop disk DATA_0006 rebalance power 11; EOF
sqlplus -s '/ as sysasm' << "EOF" alter diskgroup DATA drop disk DATA_0007 rebalance power 11; EOF
sqlplus -s '/ as sysasm' << "EOF" alter diskgroup DATA drop disk DATA_0008 rebalance power 11; EOF
- select * from v$asm_operation;
查看rebalance情况与asm日志对比
$ asmcmd -p lsop $ tail -f alert.log
删除ARCHVG磁盘组
sqlplus / as sysasm SQL> alter diskgroup ARCHVG dismount; SQL> drop diskgroup ARCHVG force including contents;