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多路径软件的用法

原创 Linux操作系统 作者:qgrape 时间:2011-10-20 13:47:29 0 删除 编辑

1ibmaix系统在5.3之前,默认的多路径软件为rdac,这时主机到每个控制器的路径只有一条。

2aix6.1以后,默认安装的多路径软件为mpio
IBM存储支持的多路径情况:
DS3000: native MPIO only
DS4000: RDAC, native MPIO, MPIO w/SDDPCM
DS5000: native MPIO, MPIO w/SDDPCM
下面命令可以查看当前系统使用的多路径情况:
# manage_disk_drivers
1: DS4100: currently MPIO; supported: RDAC/fcparray, MPIO
2: DS4300: currently MPIO; supported: RDAC/fcparray, MPIO
3: DS4500: currently MPIO; supported: RDAC/fcparray, MPIO
4: DS4700/DS4200: currently MPIO; supported: RDAC/fcparray, MPIO
5: DS4800: currently MPIO; supported: RDAC/fcparray, MPIO

3IBM的高端存储可以使用SDDSDDPCM作为主机的多路径软件
SDDPCM就是让MPIO支持IBMESS800/DS6000/DS8000/SVC的一个aix module.
同理,windows下面也有MPIO,而使windows上的MPIO支持ESS800/DS6000/DS8000/SVCmoduleSDDDSM
SDDPCM/SDDDSM都只是模块,还需要启用nativeMPIO功能。
ibm sdd support matrix 上能看出
Support Matrix for AIX SDD
Support Matrix for Windows SDD
Support Matrix for Linux SDD
Support Matrix for HP SDD
Support Matrix for Solaris SDD
Support Matrix for Novell SDD
Support Matrix for AIX SDDPCM
Support Matrix for Windows SDDDSM
Support Matrix for Linux DM-Multipath
IBM存储在不同系统下的多路径软件。其中只有aixwindows下才能使用PCMDSM。(SDDPCM must use MPIO in AIX , SDDSCM use in windows
AIX6.1是缺省带有MPIO,在lsdev里看到的设备如下:
#lsdev -Cc disk
hdisk0 Available 00-08-00 SAS Disk Drive
hdisk1 Available 00-08-00 SAS Disk Drive
hdisk2 Available 04-00-01 MPIO other FC disk
hdisk3 Available 04-00-01 MPIO other FC disk
hdisk4 Available 04-00-01 MPIO other FC disk
hdisk5 Available 04-00-01MPIO other FC disk
hdisk6 Available 04-00-01 MPIO other FC disk
在安装完SDDPCM后,在lsdev里看到的设备如下:
#lsdev -Cc disk
hdisk0 Available 00-08-00 SAS Disk Drive
hdisk1 Available 00-08-00 SAS Disk Drive
hdisk2 Available 04-00-01 IBM MPIO FC 1750
hdisk3 Available 04-00-01 IBM MPIO FC 1750
hdisk4 Available 04-00-01 IBM MPIO FC 1750
hdisk5 Available 04-00-01 IBM MPIO FC 1750
hdisk6 Available 04-00-01 IBM MPIO FC 1750
另外,两种情况下,lspv显示的都是hdisk:
#lspv
hdisk0 00f64cd35ba7253f rootvg active
hdisk1 00f64cd3743abfeb rootvg active
hdisk2 00f64cd3744116ff None
hdisk3 00f64cd3744117ef None
hdisk4 00f64cd674693920 None
hdisk5 none None
hdisk6 none None
支持AIX6.1sddpcm包为:
devices.sddpcm.61.2.4.0.2.bff
devices.sddpcm.61.rte
devices.fcp.disk.ibm.mpio.rte

The SDDPCM fileset also provides the sddpcm_get_config command for DS4000/DS5000 devices which displays information about all MPIO-based DS4K/DS5K subsystems
# sddpcm_get_config -Av
Frame. id 0:
Storage Subsystem worldwide name: 60ab8001143a0000049b88968
Controller count: 2
Partition count: 1
Partition 0:
Storage Subsystem Name = 'VIOS_DS4800'
hdisk LUN # Ownership User Label
hdisk3 0 A (non-preferred) lpar3_vol01

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