Category Archives: UNIX

Change EMC Powerpath Failover Policy on UNIX Systems

As UNIX system administrators  – we need our Operating Systems running in optimal state every time. The same is what we want to our storage systems. In EMC Powerpath there are a couple of failover policies that we can enforce to our storage devices but we must always use the one that is best suitable. We have here a LUN that is currently under Basic Failover policy even though the storage is CLARiiON:

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Import Disk Group (DG) in VxVM

Have you ever encounter rebooting a server and your Veritas filesystems are missing? Most cases these filesystems were not imported during boot up and is not available for OS to use. Importing a disk groups in VxVM does not need any reboot, follow these simple steps and you will be able to get back your disk groups in no time.

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Fix Garbled Solaris Console

If ever you encounter a console with output such as below, it can be easily be remedied by fixing the /etc/ttydefs file.

ttymon: unable to find <console> in "/etc/ttydefs"
+----------------------------------------------------------------------------+
ü ×AÒNÉNG                                                                    ü
ü Ôèe ðroçráíó áîä äátá ótoreä oî tèió óùóteí áre liceîóeä to¬ or áre        ü
ü ðriöáte ðroðertù of¬ ÔÅÌUS áîä áre láwfõllù áöáiláâle oîlù to áõtèoriúeä   ü
ü õóeró for áððroöeä ðõrðoóeó.  Uîáõtèoriúeä ácceóó to áîù ðroçráí or äátá   ü
ü oî tèió óùóteí ió îot ðeríitteä¬
+----------------------------------------------------------------------------+
ü ×AÒNÉNG                                                                    ü
ü Ôèe ðroçráíó áîä äátá ótoreä oî tèió óùóteí áre liceîóeä to¬ or áre        ü
ü ðriöáte ðroðertù of¬ ÔÅÌUS áîä áre láwfõllù áöáiláâle oîlù to áõtèoriúeä   ü
ü õóeró for áððroöeä ðõrðoóeó.  Uîáõtèoriúeä ácceóó to áîù ðroçráí or äátá   ü
ü oî tèió óùóteí ió îot ðeríitte䬠áîä áîù õîáõtèoriúeä ácceóó âeùoîä tèió   ü
ü ðoiît íáù leáä to ðroóecõtioî áîä¯or äióciðliîárù áctioî.                  ü
ü Ôèió óùóteí íáù  âe íoîitoreä át áîù tiíe for oðerátioîál reáóoîó.         ü
ü Éf ùoõ áre îot áî áõtèoriúeä õóer¬ äo îot átteíðt to loç oî.               ü
+----------------------------------------------------------------------------+
SÅÏS: Òeótoreä ótrrèeáä rðõt×AÒNÉNG: locëä: cáîîot coîtáct ótátä
(error ´©¬ coîtiîõiîç×AÒNÉNG: óöc_tli_ëcreáte:
xðrt_reçióter fáileä×AÒNÉNG: locëä: cáîîot coîtáct ótátä

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Sun StorEdge A1000 Battery Replacement Procedure

Sun StorEdge A1000 is one of the oldest storage array from SUN but still widely used. Just recently, we received a battery expiration and we need this replaced as soon as possible to ensure optimal operation of the said Sun StorEdge A1000 array. Below are the steps that we used to replace the expired battery:

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Clearing FMA faults on Oracle / Sun Fire T1000/T2000

After replacing a defective part on a Sun Fire T1000/T2000 boxes, we need to clear the FMA Faults. There are two ways that we can achieve this task – via the System Controller (SC) or Solaris OS. I usually prefer the path because there is no downtime required but there would be times that we need to do it on the OS side.

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