ETA emc163961: AIX, PowerPath: AIX host lost access to storage during powermt restore.
cfgmgr and "powermt config" may hang. A REBOOT IS REQUIRED TO CLEAR THIS! Some Solution Enabler commands (TimeFinder, SRDF, etc.) that pass instructions to the array may hang. Hanging commands may stack up behind each other and never complete. A REBOOT IS REQUIRED TO CLEAR THIS! powermt restore command hangs. A reboot is required to clear this condition. CLARiiON trespasses but I/O fails. Host may hang. IBM's MPIO may hang. Error: LVM I/O failure.
EMC Technical Advisory EMC SW: PowerPath OS: IBM AIX 5.2 TL9 SP6 OS: IBM AIX 5.3 TL5 SP6 OS: IBM AIX 5.3 TL5 CSP OS: IBM AIX 5300-05-05 Product: CLARiiON Product: Symmetrix Product: Symmetrix DMX Series Product: Invista
IBM made a change to the devices.fcp.disk.rte file set. For details on these changes please see the IBM support web site or contact IBM.
Some event caused a CLARiiON trespass and caused PowerPath paths to fail. The fault was corrected and powermt restore was issued to bring LUNs back to default SP or to restore lost paths. The powermt restore command can also be used on the DMX if paths are lost.
Customers running PowerPath should not upgrade to versions 5.2 TL9 SP6 or 5.3 TL5 SP6. If circumstances require upgrading to these levels, customers should upgrade to AIX 5.3 TL6 SP1 WITH APAR IY98352 or AIX 5.2 TL10 WITH APAR IY98572.
Additionally, customers should contact IBM for a fix for the following: IZ04838 and IZ08170 for AIX 5.3, IZ08652 for AIX 5.2 and IZ08365 for AIX 6.1, which correct a similar hang condition during error recovery.
Customers should consider the versions of the AIX operating system described in this advisory as unsupported by EMC for installing or running any EMC software.
Also other versions of AIX 5.2 and AIX 5.3 have seen this problem, beyond what is listed here in this advisory.
Depending on what type of pass-through command hangs, symptoms will vary on different configurations. If any I/O hang condition is encountered, it is best to upgrade to the AIX versions referenced in this article to eliminate this as the cause. This problem is related to the pass-through issue that has been going on for some time. The problem has appeared before these levels of code, but at these levels the problem was most severe.
IBM will be releasing a final set of APARs to address this issue for AIX versions 5.2 and 5.3 in Q1/08.
Customers already at the levels that have these problems should not issue powermt restore commands until they can withstand a possible outage.
Note:
Warning! ETAs constitute formal notification from EMC to customers, partners, and EMC field personnel. Changes to this solution require approval of the Customer Service TS2 ETA Approver, and this approval must be recorded in the Comments of the solution. To identify the CS ETA Approver, go to the Comments tab or the List of ETA Approvers, located on the ETA web page of the GS web site.
cxemc
362 消息
0
2013年9月15日 00:00
哎，你这个情况，重启就好了。下面请参考理由：
1、
powermt restore
功能：恢复路径
平台：所有PowerPath平台
存储系统：所有存储系统
格式：powermt restore
[class=symm|clariion|ess|hitachi|hpxp|hphsx|invista|all]
[hba=hba#|all] [dev=path|device|all]
注释：此命令测试并恢复指定路径，发出测试I/O并针对测试结果作出反应如下：
此外，该命令还会尝试复活dead卷：
参数：
class=symm|clariion|ess|hitachi|hpxp|hphsx|invista|all：将命令限制在指定存储系统，默认为all。
hba=hba#|all：恢复指定HBA的路径，默认为all。
dev=path|device|all：恢复指定路径，或连接指定磁盘设备的路径，默认为all。
2、
Some Solution Enabler commands (TimeFinder, SRDF, etc.) that pass instructions to the array may hang. Hanging commands may stack up behind each other and never complete. A REBOOT IS REQUIRED TO CLEAR THIS! powermt restore command hangs. A reboot is required to clear this condition. CLARiiON trespasses but I/O fails. Host may hang. IBM's MPIO may hang. Error: LVM I/O failure.
EMC SW: PowerPath OS: IBM AIX 5.2 TL9 SP6 OS: IBM AIX 5.3 TL5 SP6 OS: IBM AIX 5.3 TL5 CSP OS: IBM AIX 5300-05-05 Product: CLARiiON Product: Symmetrix Product: Symmetrix DMX Series Product: Invista
The powermt restore command can also be used on the DMX if paths are lost.
Additionally, customers should contact IBM for a fix for the following: IZ04838 and IZ08170 for AIX 5.3, IZ08652 for AIX 5.2 and IZ08365 for AIX 6.1, which correct a similar hang condition during error recovery.
Also other versions of AIX 5.2 and AIX 5.3 have seen this problem, beyond what is listed here in this advisory.
Depending on what type of pass-through command hangs, symptoms will vary on different configurations. If any I/O hang condition is encountered, it is best to upgrade to the AIX versions referenced in this article to eliminate this as the cause. This problem is related to the pass-through issue that has been going on for some time. The problem has appeared before these levels of code, but at these levels the problem was most severe.
IBM will be releasing a final set of APARs to address this issue for AIX versions 5.2 and 5.3 in Q1/08.
Customers already at the levels that have these problems should not issue powermt restore commands until they can withstand a possible outage.
liulei_it
3.2K 消息
0
2013年9月14日 23:00
借用eygle前辈的知识， Man.Page.Of.Powermt-www.eygle.com
您在做resotre之前还做了什么操作？？
用powermt display dev=all|more 好好看看
liulei_it
3.2K 消息
0
2013年9月14日 23:00
话说谷歌就是好东西
http://www.thegeekstuff.com/2010/10/powermt-command-examples/
您不会在生产机器上搞的吧
Polo_Wang
26 消息
0
2013年9月15日 07:00
什么情况？为什么重启就好了？
Fenglin1
2.1K 消息
0
2013年9月16日 02:00
要看楼主是不是之前做过什么操作，类似于装过fix，假设楼主的确按照KB里面的方法解决了。个人怀疑就是因为AIX的devices.fcp.disk.rte这个东西的变更所造成的配置混乱，powerpath restore运行的过程中会检测系统配置，重启操作系统让所有的设备重新加载，回复正常，pp的命令就能顺利读取某些配置了，对应的路径也出来。