Author Archives: Marcelo Leal - Page 11

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High Availability: Today!

Yesterday i was watching the video of the presentadion High Availability: Today and Tomorrow, presented @ SF in the first OHAC summit (05/31/2009). It was a really good discussion, and was really nice to see many different perspectives about HA. But i think is really interesting what people thinks about ...
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OpenSolaris events @SF 2009

That was an amazing experience, and was really great meet those people that i just talk by email. First was the OHAC Summit, where we had excellent presentations, and the keynote 'The Network is the Cluster' by Dr. David Cheriton (Stanford University), and the 'High Availability: Today and Tomorrow' discussion ...
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OHAC AVS: Trivia

Hello all, i'm not writing so much in these days, but soon i think i will be back on 'normal' blog duties... ;-) For now, i let you the following: Fortaleza is the capital of the Ceará. Recife is the capital of Pernambuco. Salvador is the capital of Bahia (States of Brazil). Fortaleza in english ...
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AVS tip…

I have a (bad) pratice of use ZFS for 'format' a disk. Just zfs create somepool disk, and after zfs destroy somepool. It's easy, and works (most of the time ;). These days i was getting a strange problem with the AVS cluster configuration database, with a error message like ...
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ZFS: IO Scheduler

That is one point that always was really difficult for me to understand about the implementation of ZFS. The writes in ZFS are done in transaction groups, and have lower priorities than reads. Ok, but seems to me that we have a well defined 'write cycle', and not the same ...
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ZFS vs AVS

One of the best posts about ZFS IMHO is the Rampant Layering Violation from JB. Well, that said... yesterday i was working in my project, and was not nice to see that Sun StorageTek Availability Suite (AVS) (like an OpenSolaris project), is not working on OpenSolaris (as an Operating System/Distribution). I ...
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OpenSolaris: losting devices…

That was not the first time i did see this, and i'm sure will not be the last. So i will leave here for future references... After a restart, one OpenSolaris host (2009.06 dev), the link /dev/msglog was gone. Many services in maintenance state, but no problem just recreate it... ...
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