reboot服务器RAC1/2，oracleAsm自动scandisks实效，无磁盘list

[ePower518]

环境：

root@stlin3p ~]# uname -a
Linux stlin3p.quist.ch 2.6.18-164.el5 #1 SMP Tue Aug 18 15:51:48 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
[root@stlin3p ~]# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.4 (Tikanga)
[root@stlin3p ~]# rpm -qa|grep oracleasm
oracleasm-2.6.18-164.el5-2.0.5-1.el5
oracleasm-support-2.1.3-1.el5
oracleasmlib-2.0.4-1.el5

oracleasm日志：
1、如下为reboot服务器后，自动scandisks的日志信息：
Creating /dev/oracleasm mount point: /dev/oracleasm
Loading module "oracleasm": oracleasm
Mounting ASMlib driver filesystem: /dev/oracleasm
Reloading disk partitions: done
Cleaning any stale ASM disks...
Scanning system for ASM disks...

我的判断是：自动scandisks的时候，在等待某个信息超时，scanning 超时，没有成功scan.
2、如下为服务器起来后，手工执行scandisks的日志信息：
Reloading disk partitions: done
Cleaning any stale ASM disks...
Scanning system for ASM disks...
Disk "VOL1" does not exist or is not instantiated
Instantiating disk "VOL1"
Disk "VOL2" does not exist or is not instantiated
Instantiating disk "VOL2"
Disk "VOL3" does not exist or is not instantiated
Instantiating disk "VOL3"
Disk "VOL4" does not exist or is not instantiated
Instantiating disk "VOL4"
Disk "ORADATA1" does not exist or is not instantiated
Instantiating disk "ORADATA1"
Disk "ORADATA2" does not exist or is not instantiated
Instantiating disk "ORADATA2"
Disk "FRADATA1" does not exist or is not instantiated
Instantiating disk "FRADATA1"

这个为什么不去验证disk “VOL1”“VOL2”等？只是instantiating disk?
3、如下是，过一段时间后：第二次手工scandisks的日志信息
Reloading disk partitions: done
Cleaning any stale ASM disks...
Validating disk "FRADATA1"
Validating disk "ORADATA1"
Validating disk "ORADATA2"
Validating disk "VOL1"
Validating disk "VOL2"
Validating disk "VOL3"
Validating disk "VOL4"
Scanning system for ASM disks...
Disk "VOL1" is a valid ASM disk
Disk "VOL2" is a valid ASM disk
Disk "VOL3" is a valid ASM disk
Disk "VOL4" is a valid ASM disk
Disk "ORADATA1" is a valid ASM disk
Disk "ORADATA2" is a valid ASM disk
Disk "FRADATA1" is a valid ASM disk

[ePower518]

而在rac02的oracleasm日志信息日下：
1、为reboot服务器后，自动scandisks的日志信息

2、手工scandisks的日志信息
Reloading disk partitions: done
Cleaning any stale ASM disks...
Scanning system for ASM disks...
oracleasm-read-label: Unable to open device "/dev/sdb1": No such file or directory
Disk "VOL1" does not exist or is not instantiated
Instantiating disk "VOL1"
Disk "VOL2" does not exist or is not instantiated
Instantiating disk "VOL2"
Disk "VOL3" does not exist or is not instantiated
Instantiating disk "VOL3"
Disk "VOL4" does not exist or is not instantiated
Instantiating disk "VOL4"
Disk "ORADATA1" does not exist or is not instantiated
Instantiating disk "ORADATA1"
Disk "ORADATA2" does not exist or is not instantiated
Instantiating disk "ORADATA2"
Disk "FRADATA1" does not exist or is not instantiated
Instantiating disk "FRADATA1"

中间有一个错误：
oracleasm-read-label: Unable to open device "/dev/sdb1": No such file or directory

以后无论scandisks不会出现？
3、如下是，过一段时间后：第二次手工scandisks的日志信息

Reloading disk partitions: done
Cleaning any stale ASM disks...
Validating disk "FRADATA1"
Validating disk "ORADATA1"
Validating disk "ORADATA2"
Validating disk "VOL1"
Validating disk "VOL2"
Validating disk "VOL3"
Validating disk "VOL4"
Scanning system for ASM disks...
Disk "VOL1" is a valid ASM disk
Disk "VOL2" is a valid ASM disk
Disk "VOL3" is a valid ASM disk
Disk "VOL4" is a valid ASM disk
Disk "ORADATA1" is a valid ASM disk
Disk "ORADATA2" is a valid ASM disk
Disk "FRADATA1" is a valid ASM disk

[ePower518]

补充环境信息：
SAN存储：IBM DS3950
oracle 11.2.0.1 RAC + ASM

[ePower518]

问题没有彻底解决。使用了折中的办法，手工scandisk。