Author Archives: Marcelo Leal - Page 11
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 ...
Here you can get the new version.
Here the project's page on OpenSolaris OHAC community.
Here the instructions.
peace.
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 ...
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 ...
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 ...
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 ...
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 ...
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... ...
zdb output for one sparse file:
Object lvl iblk dblk lsize asize type
818 4 16K 128K 40.0G 27.3G ZFS plain file ...
I do remember the proposal for this project (by Nick Solter) on OpenSolaris OHAC community, and just now i could play with it. Shame on me.
Two things became very clear to me with this... first, the OpenSolaris project is a success without a doubt; there are so many people participating ...