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操作系统:2.6.18-194.el5 x86_64 GNU/Linux
数据库系统:oracle 11g R2 + 11g grid infrastructure
asm软件:(1)oracleasm-2.6.18-194.el5-2.0.5-1.el5.x86_64.rpm;(2)oracleasmlib-2.0.4-1.el5.x86_64.rpm;(3)oracleasm-support-2.1.7-1.el5.x86_64.rpm
软raid软件:mdadm
分区:/dev/sdb;/dev/sdc; /dev/sdd,总共三个分区,每个800GB,总共2.4TB
采用mdadm把三个分区做一个软raid0,聚合成一个大分区/dev/md0, fdisk -l /dev/md0 显示容量为2.4TB
#mdadm -C --verbose /dev/md0 --level=0 --raid-devices=3 /dev/sdb /dev/sdc /dev/sdd
#fdisk -l /dev/md0
Disk /dev/md0: 2576.9 GB, 2576980180992 bytes
2 heads, 4 sectors/track, 629145552 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Disk /dev/md0 doesn't contain a valid partition table
然后执行/etc/init.d/oracleasm createdisks VOL0 /dev/md0, 生成了个asm disk :VOL0,后执行fdisk -l显示只有800GB容量:
#fdisk -l /dev/oracleasm/disks/VOL0
Disk /dev/oracleasm/disks/VOL0: 858.9 GB, 858993459200 bytes
255 heads, 63 sectors/track, 104433 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/oracleasm/disks/VOL0 doesn't contain a valid partition table
用11g grid 建立asm diskgroup的时候也只能看到VOL0盘的800G容量
不知道是不是oracleasm不支持mdam做的软raid?还是我的设置有误?
请大家帮帮我,先谢谢了~ |
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