Oracle 11g RAC CRS磁盘丢失后恢复

一、概述 为了方便相关问题测试，我在本机搭建了一套RAC环境，但昨天打开后却发现RAC无法启动了，不错，就当一次实战演练了。

一、概述

为了方便相关问题测试，我在本机搭建了一套RAC环境，但昨天打开后却发现RAC无法启动了，不错，，就当一次实战演练了。   
测试环境：RedHat6.3_x64+ Oracle11gr2 RAC 

二、处理过程：
    在启动虚拟机一段时间后，通过命令查看，信息如下：

[grid@rac01 ~]$ crs_stat -t

CRS-0184: Cannot communicate with the CRS daemon.
 [grid@rac01 ~]$ crsctl status res -t

CRS-4535: Cannot communicate with Cluster Ready Services

CRS-4000: Command Status failed, or completed with errors.
 

    查看CRS服务状态

[root@rac01 rac-cluster]# crsctl check crs

CRS-4638: Oracle High Availability Services is online

CRS-4535: Cannot communicate with Cluster Ready Services

CRS-4530: Communications failure contacting Cluster Synchronization Services daemon

CRS-4534: Cannot communicate with Event Manager
 

  启动Cluster资源

[root@rac01 bin]#crsctl start cluster

CRS-2800: Cannot start resource 'ora.asm' as it is already in the INTERMEDIATE state on server 'rac01'

CRS-4000: Command Start failed, or completed with errors.
 

相关相关日志，获取到如下信息，并未在其他日志中找到更有效的参考信息，如果有好的建议，请联系在下：

---alter.log

[ohasd(2017)]CRS-2807:Resource 'ora.crsd' failed to start automatically.

---ocssd.log
    2015-06-12 03:07:14.722: [    CLSF][2402883328]Allocated CLSF context

2015-06-12 03:07:14.723: [  SKGFD][2402883328]Handle 0x16f57d0 from lib :UFS:: for disk :/dev/asm-diskb:

2015-06-12 03:07:14.723: [    CSSD][2402883328]clssnmlalloccx:phyname rac01

2015-06-12 03:07:14.742: [    CSSD][2402883328]clssnmvDiskAvailabilityChange: voting file /dev/asm-diskb now online

2015-06-12 03:07:14.742: [    CSSD][2402883328]clssnmlgetfileslot: found expired slot 1 for host rac01 leasename rac01

2015-06-12 03:07:14.747: [  SKGFD][2381424384]NOTE: No asm libraries found in the system

2015-06-12 03:07:14.747: [    CLSF][2381424384]Allocated CLSF context

2015-06-12 03:07:14.748: [  SKGFD][2381424384]Handle 0x7f4d7008e6b0 from lib :UFS:: for disk :/dev/asm-diskb:

2015-06-12 03:07:14.748: [  SKGFD][2381424384]Lib :UFS:: closing handle 0x7f4d7008e6b0 for disk :/dev/asm-diskb:

2015-06-12 03:07:15.749: [  SKGFD][2381424384]NOTE: No asm libraries found in the system
 

查看CSS信息

[grid@rac01 ~]$ crsctl query css votedisk

##  STATE    File Universal Id                File Name Disk group

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

    1. ONLINE  aaaf9f57bc9c4fc7bfb57ac937d2d149 (/dev/asm-diskb) [CRS]
 

下面我通过ASM实例查看相关ASM磁盘信息：

SQL> select NAME , STATE FROM V$ASM_DISKGROUP; 

NAME                          STATE

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

DATA                          DISMOUNTED

CRS                            DISMOUNTED
 

OK，尝试MOUNT磁盘组（后续，整理是发现奇怪问题，既然前边我们查看css信息时 磁盘是online，那么这我们却无法mount，并未尝试强制mount，有待进一步研究）

SQL> alter diskgroup crs mount;

alter diskgroup crs mount

*

ERROR at line 1:

ORA-15032: not all alterations performed

ORA-15040: diskgroup is incomplete

ORA-15042: ASM disk "1" is missing from group number "1"
 

尝试MOUNT DATA磁盘组

SQL> alter diskgroup data mount;

Diskgroup altered.

SQL> select NAME , STATE FROM V$ASM_DISKGROUP; 

NAME                          STATE

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

DATA                          MOUNTED

CRS                            DISMOUNTED
 

注：现在写下当时处理问题的过程，并未过多深入研究问题，在整理文档时有了更多思考，暂且不讨论。
  既然磁盘组DATA可以用，那么我们先将CRS等信息存储到DATA磁盘组中，之前并未手动备份过CRS等信息，只能通过自动备份信息恢复。
  停止CRS服务，两个节点都执行

[root@rac01 rac-cluster]# crsctl stop has -f
 

  再次启动，以NOCRS方式启动CRS，节点1执行

[root@rac01 rac-cluster]# crsctl start crs -excl -nocrs

CRS-4123: Oracle High Availability Services has been started.

CRS-2672: Attempting to start 'ora.mdnsd' on 'rac01'

CRS-2676: Start of 'ora.mdnsd' on 'rac01' succeeded

CRS-2672: Attempting to start 'ora.gpnpd' on 'rac01'

CRS-2676: Start of 'ora.gpnpd' on 'rac01' succeeded

CRS-2672: Attempting to start 'ora.cssdmonitor' on 'rac01'

CRS-2672: Attempting to start 'ora.gipcd' on 'rac01'

CRS-2676: Start of 'ora.cssdmonitor' on 'rac01' succeeded

CRS-2676: Start of 'ora.gipcd' on 'rac01' succeeded

CRS-2672: Attempting to start 'ora.cssd' on 'rac01'

CRS-2672: Attempting to start 'ora.diskmon' on 'rac01'

CRS-2676: Start of 'ora.diskmon' on 'rac01' succeeded

CRS-2676: Start of 'ora.cssd' on 'rac01' succeeded

CRS-2672: Attempting to start 'ora.drivers.acfs' on 'rac01'

CRS-2679: Attempting to clean 'ora.cluster_interconnect.haip' on 'rac01'

CRS-2672: Attempting to start 'ora.ctssd' on 'rac01'

CRS-2681: Clean of 'ora.cluster_interconnect.haip' on 'rac01' succeeded

CRS-2672: Attempting to start 'ora.cluster_interconnect.haip' on 'rac01'

CRS-2676: Start of 'ora.drivers.acfs' on 'rac01' succeeded

CRS-2676: Start of 'ora.ctssd' on 'rac01' succeeded

CRS-2676: Start of 'ora.cluster_interconnect.haip' on 'rac01' succeeded

CRS-2672: Attempting to start 'ora.asm' on 'rac01'

CRS-2676: Start of 'ora.asm' on 'rac01' succeeded
 

修改/etc/oracle/ocr.loc文件，将OCR修改为DATA，两个节点都需要修改。
查看备份情况，选择一个最近时间节点恢复

查看命令：ocrconfig –showbackup
 [root@rac01 rac-cluster]# ocrconfig -restore /grid/crs_home/product/11.2.0/cdata/rac-cluster/week.ocr

[root@rac01 rac-cluster]# ocrcheck

Status of Oracle Cluster Registry is as follows :

        Version                  :          3

        Total space (kbytes)    :    262120

        Used space (kbytes)      :      3088

        Available space (kbytes) :    259032

        ID                      :  471595559

        Device/File Name        :      +DATA

                                    Device/File integrity check succeeded

                                    Device/File not configured

                                    Device/File not configured

                                    Device/File not configured

                                    Device/File not configured

        Cluster registry integrity check succeeded

        Logical corruption check succeeded
 

创建VOTEDISK

在创建时出现以下问题，解决办法如下：

[root@rac01 rac-cluster]# crsctl replace votedisk +DATA

CRS-4602: Failed 27 to add voting file 7255773670ae4fa9bf64a150a9fd5915.

Failure 27 with Cluster Synchronization Services while deleting voting disk.

Failed to replace voting disk group with +DATA.

CRS-4000: Command Replace failed, or completed with errors.
 

设置ASM磁盘搜索路径

SQL> show parameter asm_diskstring

NAME                                TYPE        VALUE

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

asm_diskstring                      string

SQL> alter system set asm_diskstring = '/dev/asm*';

System altered.

SQL> create spfile='+DATA' from memory;

File created.

SQL> startup force mount;
 

再次创建VOTEDISK

[root@rac01 rac-cluster]# crsctl replace votedisk +DATA

Successful addition of voting disk 383b8c3e4db34f72bf9dedd15e47471b.

Successful deletion of voting disk aaaf9f57bc9c4fc7bfb57ac937d2d149.

Successfully replaced voting disk group with +DATA.

CRS-4266: Voting file(s) successfully replaced
 

停止集群服务，再次启动

[root@rac01 rac-cluster]# crsctl stop has –f
……………………
--两个节点顺序启动
[root@rac01 rac-cluster]# crsctl start crs

CRS-4123: Oracle High Availability Services has been started.
 

  通过下面集群状态检查，我们可以看到CRS状态为OFFLINE，需要我们通过asm管理工具重新整理磁盘。

[root@rac01 bin]# crs_stat –t

Name          Type          Target    State    Host       

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

ora.CRS.dg    ora....up.type ONLINE  OFFNLINE             

ora.DATA.dg    ora....up.type ONLINE    ONLINE    rac01       

ora....ER.lsnr ora....er.type ONLINE    ONLINE    rac01       

ora....N1.lsnr ora....er.type ONLINE    ONLINE    rac01       

ora.asm        ora.asm.type  ONLINE    ONLINE    rac01       

ora.cvu        ora.cvu.type  ONLINE    ONLINE    rac01       

ora.gsd        ora.gsd.type  OFFLINE  OFFLINE               

ora....network ora....rk.type ONLINE    ONLINE    rac01       

ora.oc4j      ora.oc4j.type  ONLINE    ONLINE    rac01       

ora.ons        ora.ons.type  ONLINE    ONLINE    rac01       

ora....SM1.asm application    ONLINE    ONLINE    rac01       

ora....01.lsnr application    ONLINE    ONLINE    rac01       

ora.rac01.gsd  application    OFFLINE  OFFLINE               

ora.rac01.ons  application    ONLINE    ONLINE    rac01       

ora.rac01.vip  ora....t1.type ONLINE    ONLINE    rac01       

ora....SM2.asm application    ONLINE    ONLINE    rac02       

ora....02.lsnr application    ONLINE    ONLINE    rac02       

ora.rac02.gsd  application    OFFLINE  OFFLINE               

ora.rac02.ons  application    ONLINE    ONLINE    rac02       

ora.rac02.vip  ora....t1.type ONLINE    ONLINE    rac02       

ora.racdb.db  ora....se.type OFFLINE  OFFLINE               

ora....ry.acfs ora....fs.type ONLINE    ONLINE    rac01       

ora.scan1.vip  ora....ip.type ONLINE    ONLINE    rac01