关于Oracle asmlib配置文件中的ORACLEASM_USE_LOGICAL_BLOCK_SIZE参数: 参考文章:New Block Size Feature for OracleASM and oracleasm-support (文档 ID 1530578.1) 注意:本文说的是asmlib方式,不是udev方式. 1.ORACLEASM_USE_LOGICAL_BLOCK_SIZE参数的引入时间:oracleasm-support-2.1.8-1 and kernel-uek 2.6.39-400.4.0 or later. 2.ORACLEASM_USE_LOGICAL_BLOCK_SIZE参数在/etc/sysconfig/oracleasm文件中的解释: # ORACLEASM_USE_LOGICAL_BLOCK_SIZE: 'true' means use the logical block size # reported by the underlying disk instead of the physical. The default # is 'false' 3.ORACLEASM_USE_LOGICAL_BLOCK_SIZE=true的含义:asmlib使用底层disk的 logical block size 4.ORACLEASM_USE_LOGICAL_BLOCK_SIZE=false的含义:asmlib使用底层disk的 physical block size. 另外的参考文章: Alert: After SAN Firmware Upgrade,ASM Diskgroups ( Using ASMLIB) Cannot Be Mounted Due To ORA-15085: ASM disk "" has inconsistent sector size. (文档 ID 1500460.1)
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