New task at hand fellow UNIX Administrators. Now we need to discover the new (EMC) LUNs presented by the Storage team and make it available into Veritas Volume Manager (VxVM) and extend one of the filesystem under Veritas Filesystem (VxFS).
Category Archives: Tips
Extend Filesystem under VxVM
We have already discussed extending a filesystem in AIX under JFS as well as the basic of softpartion where we could also extend its filesystem size. This time we have a task which is under Veritas Volume Manager (VxVM). We need to extend a partition that is being managed by VxVM.
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:
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.
How to use snap command on AIX
For any software or hardware issues with AIX, logging a case with IBM – the support team will always ask for snap files. Snap files will collect all system configuration that will help and guide the IBM support team to track whatever issue there is on the system.
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:
Unix or Linux Crontab Headers
Even though cron is our usual lifesaver for redundant tasks on a Unix or Linux Systems, there are times that we really forget the syntax that is needed for our cronjobs. Here is a simple yet effective headers that we could place on top of the crontab as comments:
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.
Available Commands for HP iLO
The last time we discussed on how to access the HP iLO. But we need CLI commands for us to be able to further troubleshoot our hardware. Just like we did for Sun / Oracle ALOM – here are the commands that one can use for HP iLO.