AIX环境下安装、卸载PowerPath

named \ If one is found run the command below to remove it and then re-run odmget command to confirm all are gone.

/usr/es/sbin/cluster/utilities/clrmcustom -t event -n'set_scsi_id' (or -n'set_scsi_id.sh')

2. Add the custom cluster event to your HACMP configuration. This event is the name given to the script that will be added later to select pre-defined HACMP events. Note that this is one long command with no carriage returns. /usr/es/sbin/cluster/utilities/claddcustom -t event -n'cfgscsi_id' -I'Set correct scsi id on EMC CLARiiON pseudo devices.' -v'/usr/sbin/cfgscsi_id'

3. Verify your custom cluster event was added correctly by running the command below and comparing the output. odmget HACMPcustom HACMPcustom:

name = \ type = \

description = \ value = \ relation = \ status = 0

4. Run the two commands below to modify the pre-defined HACMP event by giving the event command your custom cluster event as a pre-event command. /usr/es/sbin/cluster/utilities/clchevent -O'node_up' -s'/usr/es/sbin/cluster/events/node_up' -b 'cfgscsi_id' -c '0' /usr/es/sbin/cluster/utilities/clchevent -O'node_down' -s'/usr/es/sbin/cluster/events/node_down' -b 'cfgscsi_id' -c '0'

5. Verify the events were properly modified by running the two commands below and

comparing the output.

odmget -q name=node_up HACMPevent

HACMPevent:

name = \

desc = \ setno = 101 msgno = 7

catalog = \

cmd = \ notify = \ pre = \ post = \ recv = \ count = 0

event_duration = 0

odmget -q name=node_down HACMPevent HACMPevent:

name = \

desc = \ setno = 101 msgno = 8

catalog = \

cmd = \

notify = \ pre = \ post = \ recv = \ count = 0

event_duration = 0

6. Once the \synchronize the cluster and ensure there are no errors resulting from the addition of the pre-event scripts.

Notes: The modified script must reside in the same location on all nodes in the cluster. The script must be made executable on all nodes. Synchronization for the cluster will fail if it is not.

2.3 LV Striping

EMC建议在使用CLARiiON LUN时，如果在CLARiiON 内部已经做了RAID5 或RAID 10的情况下：（1）如果选择的LUN来在不同的Raid Group, 在主机层面, 可以做LV RAID 0 Striping设置, Striping的size建议选取64k的倍数，对于是否运用LV striping和striping szie大小取决于应用程序的I/O特性和I/O size. （2）如果选择的LUN来自同一个RAID Group，则不建议做LV Striping.

EMC强烈建议一个卷组内使用的LUN平均分布在CLARiiON的两个控制器上(SPA,SPB)，以提高控制器的利用率。

Best Regards

Chen Xiao Feng(陈晓峰) EMC Global Services - TIS China, EMC Corporation Office: 010-84538333-6143

24-hour Mandarin Support Line: 8008190009 / 8008103777

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