e is online: ORCL:CRSVOL1; details in /u02/app/11.2.0.3/grid/log/vmrac2/cssd/ocssd.log.
2014-06-16 16:56:40.342
[cssd(2947)]CRS-1601:CSSD Reconfiguration complete. Active nodes are vmrac1 vmrac2 .
2014-06-16 16:56:42.635
[ctssd(3009)]CRS-2401:The Cluster Time Synchronization Service started on host vmrac2.
2014-06-16 16:56:42.635
[ctssd(3009)]CRS-2407:The new Cluster Time Synchronization Service reference node is host vmrac1.
2014-06-16 16:56:46.726
[ctssd(3009)]CRS-2408:The clock on host vmrac2 has been updated by the Cluster Time Synchronization Service to be
synchronous with the mean cluster time.
[client(3047)]CRS-10001:16-Jun-14 16:56 ACFS-9391: Checking for existing ADVM/ACFS installation.
[client(3060)]CRS-10001:16-Jun-14 16:56 ACFS-9392: Validating ADVM/ACFS installation files for operating system.
[client(3062)]CRS-10001:16-Jun-14 16:56 ACFS-9393: Verifying ASM Administrator setup.
[client(3065)]CRS-10001:16-Jun-14 16:56 ACFS-9308: Loading installed ADVM/ACFS drivers.
[client(3069)]CRS-10001:16-Jun-14 16:56 ACFS-9154: Loading 'oracleoks.ko' driver.
[client(3080)]CRS-10001:16-Jun-14 16:56 ACFS-9154: Loading 'oracleadvm.ko' driver.
[client(3096)]CRS-10001:16-Jun-14 16:56 ACFS-9154: Loading 'oracleacfs.ko' driver.
[client(3180)]CRS-10001:16-Jun-14 16:56 ACFS-9327: Verifying ADVM/ACFS devices.
[client(3183)]CRS-10001:16-Jun-14 16:56 ACFS-9156: Detecting control device '/dev/asm/.asm_ctl_spec'.
[client(3187)]CRS-10001:16-Jun-14 16:56 ACFS-9156: Detecting control device '/dev/ofsctl'.
[client(3193)]CRS-10001:16-Jun-14 16:56 ACFS-9322: completed
测试二：清空olr的内容，使用一个空文件来代替：
观察alert.log内容如下：
[ohasd(5451)]CRS-0704:Oracle High Availability Service aborted due to Oracle Local Registry error [PROCL-26: Error while
accessing the physical storage]. Details at (:OHAS00106:) in /u02/app/11.2.0.3/grid/log/vmrac2/ohasd/ohasd.log.
2014-06-16 17:19:02.723
[ohasd(5462)]CRS-0704:Oracle High Availability Service aborted due to Oracle Local Registry error [PROCL-26: Error while
accessing the physical storage]. Details at (:OHAS00106:) in /u02/app/11.2.0.3/grid/log/vmrac2/ohasd/ohasd.log.
[client(5477)]CRS-10001:CRS-10132: No msg for has:crs-10132 [10][60]
观察相应的ohasd.log 日志的内容：
[grid@vmrac2 vmrac2]$ tail -300 /u02/app/11.2.0.3/grid/log/vmrac2/ohasd/ohasd.log
2014-06-16 17:19:02.722: [ OCROSD][1923920288]utread:3: Problem reading buffer 150c4000 buflen 4096 retval 0 phy_offset
102400 retry 5
2014-06-16 17:19:02.722: [ OCRRAW][1923920288]propriogid:1_1: Failed to read the whole bootblock. Assumes invalid format.
2014-06-16 17:19:02.722: [ OCRRAW][1923920288]proprioini: all disks are not OCR/OLR formatted
2014-06-16 17:19:02.722: [ OCRRAW][1923920288]proprinit: Could not open raw device
2014-06-16 17:19:02.722: [ OCRAPI][1923920288]a_init:16!: Backend init unsuccessful : [26]
2014-06-16 17:19:02.723: [ CRSOCR][1923920288] OCR context init failure. Error: PROCL-26: Error while accessing the
physical storage
2014-06-16 17:19:02.723: [ default][1923920288] Created alert : (:OHAS00106:) : OLR initialization failed, error: PROCL-
26: Error while accessing the physical storage
2014-06-16 17:19:02.723: [ default][1923920288][PANIC] OHASD exiting; Could not init OLR
2014-06-16 17:19:02.723: [ default][1923920288] Done
总结：
根据以上测试 可以发现ohasd （Oracle High Availability Service） 依赖于 o