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:
Tag Archives: Oracle Solaris
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.
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 ðeríitteä¬ 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
Integrated Lights Out Manager (ILOM) CLI Cheat Sheet
Learning the Integrated Lights Out Manager (ILOM) will be a big help when a System Administrator cannot login anymore to the server. ILOM can be accessed via IP network or serial console. Here are some of the most commonly used commands that could get anyone on track on managing the ILOM:
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:
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.
Install EMC PowerPath License on UNIX Systems
Today we encountered a degraded policy in EMC PowerPath disk on one of our SUN/Oracle Solaris boxes. We found out that the license for our PowerPath was not properly installed on the system. With this current issue – our disks is only running on Basic Failover policy which is not recommended for CLARiiON disks. To mitigate the issue, we need to install the license and set the policy back to CLARiiON Optimization Policy.
Available Commands for Sun / Oracle ALOM
There are times that we really rely on the manual (man) pages when it comes to getting the right options for a certain command under UNIX boxes. But when it comes to Sun/Oracle Advanced Lights Out Manager (ALOM) we can count on with the help command. Here are the commands that you can have with Sun/Oracle Advanced Lights Out Manager.
UNIX Note is BACK!!!
It has been a while that I’m gone but the wait is over. Expect more relevant posts and (hopefully) frequent updates from your friendly UNIX SysAdmin from UNIX Note.
I will also try to find other SysAdmins that would like to write for our little site.
Mirror Root Disk with Solaris Volume Manager (SVM)
As UNIX Systems Administrators, we want our systems up and running – 24 hours a day, 7 days a week. Though this could be achievable with the UNIX Operating Systems, we cannot set aside the fact that our hardware equipment are prone to wear and tear. One notable point of failure if our root or boot disks. Once it dies out – our only way is thru our backup and restore it. But there is another way that we could prevent this – if we have a spare identical disk as our root disk. We can have a redundant machine by having our root disks mirrored and make our system much reliable and omit this point of failure. Here are the step-by-step how to guide in mirroring our root/boot disk using the Solaris Volume Manager (SVM).