Coolzsb的杂货铺子

经验教训 ：如果不是要安装windows或者是那几个大而庞杂的linux发行版本的话，最好不要再用这种hostraid的卡了，切记切记

到vmware esx 2.5.3为止，对于adaptec的hostraid都没有提供支持，看起来也没有支持的想法。可是目前进的这批x346都是adaptec的7902的scsi控制芯片，原先考虑的就是用hostraid提供raid 1镜像，这下可好，一开启hostraid，vmware就动不了了。！！

1. 先关闭hostraid，把vmware装上，然后装了个redhat7.2的系统用来编译vmware的模块。
2. 从vmware的网站上下了2.5.3的source，然后解到redhat 7.2里面，再用最新的79xx的源码覆盖vmware 2.5.3 source里面的相关源文件，重新make modules，得到支持hostraid的aic79xx.o

   验证新编译的aic79xx.o支持hostraid

   1. modinfo aic79xx.o

   输出

   filename:    aic79xx.o
   description: "Adaptec Aic790X U320 SCSI Host Bus Adapter driver"
   author:      "Maintainer: Luben Tuikov <luben_tuikov@adaptec.com>"
   parm:        aic79xx string, description "period delimited, options string.
           verbose                 Enable verbose/diagnostic logging
   attach_HostRAID:   Attach to controllers in HostRAID mode
          allow_memio             Allow device registers to be memory mapped
           debug                   Bitmask of debug values to enable
           no_reset                Supress initial bus resets
           extended                Enable extended geometry on all controllers
           periodic_otag           Send an ordered tagged transaction
                                    periodically to prevent tag starvation.
                                    This may be required by some older disk
                                   or drives/RAID arrays.
           reverse_scan            Sort PCI devices highest Bus/Slot to lowest
           tag_info:      Set per-target tag depth
           global_tag_depth:  Global tag depth for all targets on all buses
           rd_strm: Set per-target read streaming setting.
           dv:        Set per-controller Domain Validation Setting.
           slewrate:Set the signal slew rate (0-15).
           precomp:

   Set the signal precompensation (0-7).
           amplitude:         Set the signal amplitude (0-7).
            seltime:           Selection Timeout:
                                    (0/256ms,1/128ms,2/64ms,3/32ms)
           slowcrc                 Turn on the SLOWCRC bit (Rev B only)
   Sample module configuration line:
                   Enable verbose logging
                   Set tag depth on Controller 2/Target 2 to 10 tags
                   Shorten the selection timeout to 128ms
    
           options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'
    
           Sample module configuration line:
                   Change Read Streaming for Controller's 2 and 3
    
           options aic79xx 'aic79xx=rd_strm:{..0xFFF0.0xC0F0}'"

   留意上面加粗的那段，证明现在的aic79xx.o支持hostraid了 

3. 把新编译出来的aic79xx.o拿来替代vmware原有的/lib/modules/2.4.9-vmnix2/kernel/driver/scsi/aic79xx/aic79xx.o

记得关键要把aic79xx.o的initrd.img修改，insmod 的参数

然后重新把scsi bios里面的hostraid开启，设置主从盘，开机测试，重新引导的时候直接报链接出错，挂掉了。