Exadata关于磁盘部分,新增加了lun,celldisk,griddisk的概念,这里简单介绍一下,如下图:
我们可以看到一个物理硬盘添加到Cell之后,会自动创建LUN,LUN对应的是创建一个celldisk,一个celldisk对应一个或者多个griddisk,而griddisk就可以提供给ASM实例使用了。
这里我主要记录一下我在将一个正在运行的Exadata机器, 它的一个磁盘正常删除并添加的完整过程。
(这里强调一下“CellCLI>”都是在Cell上执行的命令,“SQL>” 都是在compute node(既数据库节点)上执行的命令)
1.首先要确定我需要删除的硬盘的LUN的位置,celldisk名字,通过下面命令可以查询
- CellCLI> LIST CELLDISK WHERE name LIKE 'CD_03.*' detail
- name: CD_03_dmorlcel08 <<<<<<<<< celldisk名字
- comment:
- creationTime: 2012-04-20T04:37:54-04:00
- deviceName: /dev/sdd
- devicePartition: /dev/sdd
- diskType: HardDisk
- errorCount: 0
- freeSpace: 0
- id: 772cc8b1-ca81-468e-8b65-16e2724ef4da
- interleaving: none
- lun: 0_3 <<<<<<<<< 在0_3 这个LUN
- raidLevel: 0
- size: 557.859375G
- status: normal
2.查询griddisk的信息,这个可以找到asm中的disk name,以及diskgroup的name。
通过这个命令还可以看到这个celldisk对应三个griddisk。
- CellCLI> LIST GRIDDISK WHERE cellDisk LIKE 'CD_03.*' detail
- name: DATA_CD_03_dmorlcel08
- asmDiskGroupName: DATA
- asmDiskName: DATA_CD_03_DMORLCEL08 <<<<<<<<<<<<<<<<<<<<<<<<<ASM disk name
- availableTo:
- cellDisk: CD_03_dmorlcel08
- comment:
- creationTime: 2012-04-20T04:39:48-04:00
- diskType: HardDisk
- errorCount: 0
- id: 524f59b3-32af-4926-bc40-bf094d05a71d
- offset: 32M
- size: 423G
- status: active
- name: DBFS_DG_CD_03_dmorlcel08
- asmDiskGroupName: DBFS_DG
- asmDiskName: DBFS_DG_CD_03_DMORLCEL08 <<<<<<<<<<<<<<<<<<<<<<<<<ASM disk name
- availableTo:
- cellDisk: CD_03_dmorlcel08
- comment:
- creationTime: 2012-04-20T04:57:22-04:00
- diskType: HardDisk
- errorCount: 0
- id: 001ef1df-5d41-4fab-b1ad-5a8983a63b8c
- offset: 528.734375G
- size: 29.125G
- status: active
- name: RECO_CD_03_dmorlcel08
- asmDiskGroupName: RECO <<<<<<<<<<<<<<<<<<<<<<<<<ASM diskgroup name
- asmDiskName: RECO_CD_03_DMORLCEL08 <<<<<<<<<<<<<<<<<<<<<<<<<ASM disk name
- availableTo:
- cellDisk: CD_03_dmorlcel08
- comment:
- creationTime: 2012-04-20T04:56:28-04:00
- diskType: HardDisk
- errorCount: 0
- id: 544c54c0-2969-4ad3-bea0-f3e2b4f1bf31
- offset: 423.046875G
- size: 105.6875G
- status: active
3.通过ASM实例查询磁盘信息
- $more /etc/oratab
- #Backup file is /u01/app/oracle/product/11.2.0.3/db_home1/srvm/admin/oratab.bak.dmorldb05 line added by Agent
- +ASM1:/u01/app/11.2.0.3/grid:N # line added by Agent
- $ export ORACLE_SID=+ASM1
- $ export ORACLE_HOME=/u01/app/11.2.0.3/grid
- $ sqlplus / as sysasm
- SQL> set line 400
- SQL> select GROUP_NUMBER,DISK_NUMBER,LABEL,NAME,MOUNT_STATUS,state,FAILGROUP,MODE_STATUS,PATH from v$asm_disk where name='RECO_CD_03_DMORLCEL08'; <<<<<<<disk name need to correct
- GROUP_NUMBER DISK_NUMBER LABEL NAME PATH
- ------------ ----------- ------------------------------- ------------------------------
- 4 10 RECO_CD_03_DMORLCEL08 RECO_CD_03_DMORLCEL08 o/192.168.10.16/RECO_CD_03_dmorlcel08
- 查询对应的磁盘组
- SQL> select GROUP_NUMBER,NAME from v$asm_diskgroup; <<<<<determine the diskgroup number
- GROUP_NUMBER NAME
- ------------ ------------------------------
- 1 DATA
- 2 DBFS_DG
- 4 RECO
- SQL> select NAME,ALLOCATION_UNIT_SIZE,STATE,TOTAL_MB,OFFLINE_DISKS,TOTAL_MB,FREE_MB,REQUIRED_MIRROR_FREE_MB from v$asm_diskgroup;
4.下面开始我们的删除操作,如果删除celldisk,首先应该从最上层,ASM层面开始删除磁盘
- SQL> alter diskgroup RECO drop disk RECO_CD_03_DMORLCEL08 REBALANCE power 8;
- SQL> alter diskgroup DBFS_DG drop disk DBFS_DG_CD_03_DMORLCEL08 REBALANCE power 8;
- SQL> alter diskgroup DATA drop disk DATA_CD_03_DMORLCEL08 REBALANCE power 8;
5.删除的过程中,通过这个命令查收reblance进度,确保ASM删除磁盘的动作完成,再进行下一步操作。
- SQL> set line 200
- SQL> select * from v$asm_operation;
- GROUP_NUMBER OPERA STAT POWER ACTUAL SOFAR EST_WORK EST_RATE EST_MINUTES ERROR_CODE
- ------------ ----- ---- ---------- ---------- ---------- ---------- ----------
- 1 REBAL RUN 8 8 58593 207611 7586 19
- SQL> /
- GROUP_NUMBER OPERA STAT POWER ACTUAL SOFAR EST_WORK EST_RATE EST_MINUTES ERROR_CODE
- ------------ ----- ---- ---------- ---------- ---------- ---------- ----------
- 1 REBAL RUN 8 8 58856 207656 7643 19
- SQL> /
- no rows selected <<<<<<<<<<<<表示reblance已经完成
6.ASM中删除掉DBFS_DG_CD_03_DMORLCEL08磁盘后,通过griddisk命令查询,发现对应的asmDiskName,asmDiskGroupName,已经没有值了。
- CellCLI> list GRIDDISK DBFS_DG_CD_03_DMORLCEL08 detail
- name: DBFS_DG_CD_03_dmorlcel08
- asmDiskGroupName:
- asmDiskName:
- availableTo:
- cellDisk: CD_03_dmorlcel08
- comment:
- creationTime: 2012-04-20T04:57:22-04:00
- diskType: HardDisk
- errorCount: 0
- id: 001ef1df-5d41-4fab-b1ad-5a8983a63b8c
- offset: 528.734375G
- size: 29.125G
- status: active
7.删除griddisk,并查询,发现已经查询不到griddisk DBFS_DG_CD_03_DMORLCEL08的信息
- CellCLI> DROP GRIDDISK DBFS_DG_CD_03_DMORLCEL08;
- GridDisk DBFS_DG_CD_03_dmorlcel08 successfully dropped
- CellCLI> list GRIDDISK DBFS_DG_CD_03_DMORLCEL08 detail
- CELL-02007: Grid disk does not exist: DBFS_DG_CD_03_DMORLCEL08
- CellCLI> LIST gridDISK WHERE cellDisk LIKE '.*CD_03.*' detail
- name: DATA_CD_03_dmorlcel08
- asmDiskGroupName: DATA
- asmDiskName: DATA_CD_03_DMORLCEL08
- availableTo:
- cellDisk: CD_03_dmorlcel08
- comment:
- creationTime: 2012-04-20T04:39:48-04:00
- diskType: HardDisk
- errorCount: 0
- id: 524f59b3-32af-4926-bc40-bf094d05a71d
- offset: 32M
- size: 423G
- status: active
- name: RECO_CD_03_dmorlcel08
- asmDiskGroupName:
- asmDiskName:
- availableTo:
- cellDisk: CD_03_dmorlcel08
- comment:
- creationTime: 2012-04-20T04:56:28-04:00
- diskType: HardDisk
- errorCount: 0
- id: 544c54c0-2969-4ad3-bea0-f3e2b4f1bf31
- offset: 423.046875G
- size: 105.6875G
- status: active
8.继续删除RECO_CD_03_dmorlcel08并查询
- CellCLI> DROP GRIDDISK RECO_CD_03_dmorlcel08;
- GridDisk RECO_CD_03_dmorlcel08 successfully dropped
- CellCLI> LIST gridDISK WHERE cellDisk LIKE '.*CD_03.*' detail
- name: DATA_CD_03_dmorlcel08
- asmDiskGroupName: DATA
- asmDiskName: DATA_CD_03_DMORLCEL08
- availableTo:
- cellDisk: CD_03_dmorlcel08
- comment:
- creationTime: 2012-04-20T04:39:48-04:00
- diskType: HardDisk
- errorCount: 0
- id: 524f59b3-32af-4926-bc40-bf094d05a71d
- offset: 32M
- size: 423G
- status: active
9.继续删除DATA_CD_03_DMORLCEL08,并查询
- CellCLI> DROP GRIDDISK DATA_CD_03_DMORLCEL08
- GridDisk DATA_CD_03_dmorlcel08 successfully dropped
- CellCLI> LIST gridDISK WHERE cellDisk LIKE '.*CD_03.*' detail
- CellCLI> LIST CELLDISK WHERE name LIKE 'CD_03.*' detail
- name: CD_03_dmorlcel08
- comment:
- creationTime: 2012-04-20T04:37:54-04:00
- deviceName: /dev/sdd
- devicePartition: /dev/sdd
- diskType: HardDisk
- errorCount: 0
- freeSpace: 557.8125G
- freeSpaceMap: offset=32M,size=19.96875G
- offset=20.015625G,size=537.84375G
- id: 772cc8b1-ca81-468e-8b65-16e2724ef4da
- interleaving: none
- lun: 0_3
- raidLevel: 0
- size: 557.859375G
- status: normal
- CellCLI> LIST CELLDISK WHERE name LIKE 'CD_03.*' detail
- name: CD_03_dmorlcel08
- comment:
- creationTime: 2012-04-20T04:37:54-04:00
- deviceName: /dev/sdd
- devicePartition: /dev/sdd
- diskType: HardDisk
- errorCount: 0
- freeSpace: 557.8125G
- freeSpaceMap: offset=32M,size=19.96875G
- offset=20.015625G,size=537.84375G
- id: 772cc8b1-ca81-468e-8b65-16e2724ef4da
- interleaving: none
- lun: 0_3
- raidLevel: 0
- size: 557.859375G
- status: normal
- CellCLI> drop celldisk CD_03_dmorlcel08
- CellDisk CD_03_dmorlcel08 successfully dropped
10.删除celldisk,并查询LUN信息
- CellCLI> LIST CELLDISK WHERE name LIKE 'CD_03.*' detail
- CellCLI> LIST LUN 0_3 DETAIL
- name: 0_3
- cellDisk:
- deviceName: /dev/sdd
- diskType: HardDisk
- id: 0_3
- isSystemLun: FALSE
- lunAutoCreate: FALSE
- lunSize: 557.861328125G
- lunUID: 0_3
- physicalDrives: 28:3
- raidLevel: 0
- lunWriteCacheMode: "WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU"
- status: normal
- 比较一个正常的LUN信息
- CellCLI> LIST LUN 0_4 DETAIL
- name: 0_4
- cellDisk: CD_04_dmorlcel08 <<<<<<<
- deviceName: /dev/sde
- diskType: HardDisk
- id: 0_4
- isSystemLun: FALSE
- lunAutoCreate: FALSE
- lunSize: 557.861328125G
- lunUID: 0_4
- physicalDrives: 28:4
- raidLevel: 0
- lunWriteCacheMode: "WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU"
- status: normal
11.在删除完成后,我们要开始添加的过程,实际troubleshooting中,会遇到Exadata在磁盘更换完成后,并没有正常的创建celldisk和griddisk,我们需要手动创建celldisk和griddisk。
手动创建之前,我们需要查询physicaldisk状态,确认physicalSerial和你更换的磁盘是对应的
- CellCLI> list physicaldisk where luns=0_3 detail
- name: 28:3
- deviceId: 24
- diskType: HardDisk
- enclosureDeviceId: 28
- errMediaCount: 0
- errOtherCount: 0
- foreignState: false
- luns: 0_3
- makeModel: "SEAGATE ST360057SSUN600G"
- physicalFirmware: 0A25
- physicalInsertTime: 2012-01-20T15:57:20-05:00
- physicalInterface: sas
- physicalSerial: E12EQY
- physicalSize: 558.9109999993816G
- slotNumber: 3
- status: normal
12.创建celldisk,根据前面的信息,确认需要创建的celldisk与LUN能准确的匹配上,不要写错
- CellCLI> create celldisk CD_03_dmorlcel08 lun=0_4(如果没有正确匹配,会遇到如下错误)
- CELL-04527: Cannot complete the creation of cell disk CD_03_dmorlcel08. Received error: CELL-04522: The LUN 0_4 has a valid celldisk.
- Cell disks are not created: CD_03_dmorlcel08
- 成功创建
- CellCLI> create celldisk CD_03_dmorlcel08 lun=0_3
- CellDisk CD_03_dmorlcel08 successfully created
14.首先查询一个正常的磁盘,确认后续需要设置的信息,如name,size,offset
- CellCLI> list griddisk where celldisk=CD_04_dmorlcel08 attributes name,size,offset
- DATA_CD_04_dmorlcel08 423G 32M
- DBFS_DG_CD_04_dmorlcel08 29.125G 528.734375G
- RECO_CD_04_dmorlcel08 105.6875G 423.046875G
15.创建griddisk磁盘
- CellCLI> create griddisk DATA_CD_03_dmorlcel08 celldisk=CD_03_dmorlcel08,size=423G
- CellCLI> create griddisk DBFS_DG_CD_03_dmorlcel08 celldisk=CD_03_dmorlcel08,size=29.125G
- CellCLI> create griddisk RECO_CD_03_dmorlcel08 celldisk=CD_03_dmorlcel08,size=105.6875G
- 下面是执行的记录,以及查询结果
- CellCLI> create celldisk CD_03_dmorlcel08 lun=0_3
- CellDisk CD_03_dmorlcel08 successfully created
- CellCLI> create griddisk DATA_CD_03_dmorlcel08 celldisk=CD_03_dmorlcel08,size=423G
- GridDisk DATA_CD_03_dmorlcel08 successfully created
- CellCLI> create griddisk DBFS_DG_CD_03_dmorlcel08 celldisk=CD_03_dmorlcel08,size=29.125G
- GridDisk DBFS_DG_CD_03_dmorlcel08 successfully created
- CellCLI> create griddisk RECO_CD_03_dmorlcel08 celldisk=CD_03_dmorlcel08,size=105.6875G
- GridDisk RECO_CD_03_dmorlcel08 successfully created
- 可以查询到celldisk信息
- CellCLI> LIST CELLDISK WHERE name LIKE 'CD_03.*' detail
- name: CD_03_dmorlcel08
- comment:
- creationTime: 2013-02-07T02:13:17-05:00
- deviceName: /dev/sdd
- devicePartition: /dev/sdd
- diskType: HardDisk
- errorCount: 0
- freeSpace: 0
- id: 2f3e651e-6fb6-47e7-a227-692645519ce4
- interleaving: none
- lun: 0_3
- raidLevel: 0
- size: 557.859375G
- status: normal
- 可以查询到griddisk信息
- CellCLI> LIST gridDISK WHERE cellDisk LIKE '.*CD_03.*' detail
- name: DATA_CD_03_dmorlcel08
- availableTo:
- cellDisk: CD_03_dmorlcel08
- comment:
- creationTime: 2013-02-07T02:14:17-05:00
- diskType: HardDisk
- errorCount: 0
- id: 6f9cb08e-fd8f-4063-b902-439387237f5d
- offset: 32M
- size: 423G
- status: active
- name: DBFS_DG_CD_03_dmorlcel08
- availableTo:
- cellDisk: CD_03_dmorlcel08
- comment:
- creationTime: 2013-02-07T02:14:26-05:00
- diskType: HardDisk
- errorCount: 0
- id: 055710ce-216a-4b10-a215-b38763ea65df
- offset: 423.046875G
- size: 29.125G
- status: active
- name: RECO_CD_03_dmorlcel08
- availableTo:
- cellDisk: CD_03_dmorlcel08
- comment:
- creationTime: 2013-02-07T02:14:33-05:00
- diskType: HardDisk
- errorCount: 0
- id: fdf9a255-0a0d-4152-a557-de80b112ddff
- offset: 452.171875G
- size: 105.6875G
- status: active
- CellCLI> list griddisk where celldisk=CD_03_dmorlcel08 attributes name,size,offset
- DATA_CD_03_dmorlcel08 423G 32M
- DBFS_DG_CD_03_dmorlcel08 29.125G 423.046875G
- RECO_CD_03_dmorlcel08 105.6875G 452.171875G
16.如果磁盘没有删除的情况下,需要force再次删除一下,但是我们的测试中,前面已经正常删除磁盘 .
- SQL> alter diskgroup data drop disk DATA_CD_07_dm03cel13 force;
- select GROUP_NUMBER,DISK_NUMBER,LABEL,NAME,MOUNT_STATUS,state,FAILGROUP,MODE_STATUS,PATH from v$asm_disk where name like '%CD_03_DMORLCEL08';
17.添加磁盘
- SQL> ALTER DISKGROUP DATA ADD DISK 'o/192.168.10.16/DATA_CD_03_dmorlcel08' rebalance power 10;
- SQL> ALTER DISKGROUP DBFS_DG ADD DISK 'o/192.168.10.16/DBFS_DG_CD_03_dmorlcel08' rebalance power 10;
- SQL> ALTER DISKGROUP RECO ADD DISK 'o/192.168.10.16/RECO_CD_03_dmorlcel08' rebalance power 10;
- 添加完成两个磁盘后,查询ASM的结果
- GROUP_NUMBER DISK_NUMBER LABEL NAME MOUNT_S STATE FAILGROUP MODE_ST PATH
- ------------ ----------- ------------------------------- ------------------------------ ------- -------- ------------------------------ ------- ------------------
- 1 3 DATA_CD_03_DMORLCEL08 DATA_CD_03_DMORLCEL08 CACHED NORMAL DMORLCEL08 ONLINE o/192.168.10.16/DATA_CD_03_dmorlcel08
- 2 6 DBFS_DG_CD_03_DMORLCEL08 DBFS_DG_CD_03_DMORLCEL08 CACHED NORMAL DMORLCEL08 ONLINE o/192.168.10.16/DBFS_DG_CD_03_dmorlcel08
18.添加磁盘的过程,通过这个命令来检查完成状况
SQL> select * from v$asm_operation;
19.最后,全部完成的状态
- SQL> select GROUP_NUMBER,DISK_NUMBER,LABEL,NAME,MOUNT_STATUS,state,FAILGROUP,MODE_STATUS,PATH from v$asm_disk where name like '%CD_03_DMORLCEL08';
- GROUP_NUMBER DISK_NUMBER LABEL NAME MOUNT_S STATE FAILGROUP MODE_ST PATH
- ------------ ----------- ------------------------------- ------------------------------ ------- -------- ------------------------------ -------
- 1 3 DATA_CD_03_DMORLCEL08 DATA_CD_03_DMORLCEL08 CACHED NORMAL DMORLCEL08 ONLINE o/192.168.10.16/DATA_CD_03_dmorlcel08
- 4 6 RECO_CD_03_DMORLCEL08 RECO_CD_03_DMORLCEL08 CACHED NORMAL DMORLCEL08 ONLINE o/192.168.10.16/RECO_CD_03_dmorlcel08
- 2 6 DBFS_DG_CD_03_DMORLCEL08 DBFS_DG_CD_03_DMORLCEL08 CACHED NORMAL DMORLCEL08 ONLINE o/192.168.10.16/DBFS_DG_CD_03_dmorlcel08
- 查询griddisk信息,可以看到asmDiskGroupName,asmDiskName都已经有了。
- CellCLI> list griddisk where celldisk=CD_03_dmorlcel08 detail
- name: DATA_CD_03_dmorlcel08
- asmDiskGroupName: DATA
- asmDiskName: DATA_CD_03_DMORLCEL08
- availableTo:
- cellDisk: CD_03_dmorlcel08
- comment:
- creationTime: 2013-02-07T02:14:17-05:00
- diskType: HardDisk
- errorCount: 0
- id: 6f9cb08e-fd8f-4063-b902-439387237f5d
- offset: 32M
- size: 423G
- status: active
- name: DBFS_DG_CD_03_dmorlcel08
- asmDiskGroupName: DBFS_DG
- asmDiskName: DBFS_DG_CD_03_DMORLCEL08
- availableTo:
- cellDisk: CD_03_dmorlcel08
- comment:
- creationTime: 2013-02-07T02:14:26-05:00
- diskType: HardDisk
- errorCount: 0
- id: 055710ce-216a-4b10-a215-b38763ea65df
- offset: 423.046875G
- size: 29.125G
- status: active
- name: RECO_CD_03_dmorlcel08
- asmDiskGroupName: RECO
- asmDiskName: RECO_CD_03_DMORLCEL08
- availableTo:
- cellDisk: CD_03_dmorlcel08
- comment:
- creationTime: 2013-02-07T02:14:33-05:00
- diskType: HardDisk
- errorCount: 0
- id: fdf9a255-0a0d-4152-a557-de80b112ddff
- offset: 452.171875G
- size: 105.6875G
- status: active
至此,全部的实验已经完成,如果在更换磁盘后没有正常添加,可以参考这个实验。
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