Solaris

Posts related to Oracle Solaris: Solaris 10, OpenSolaris, ZFS, etc.

Top 11 Things You Can Do Now To Prepare For Oracle Solaris 11

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Oracle Solaris 11 is the future of enterprise IT, that is now clear.

Still, we need to wait a year until it is officially released. What can we do now? Well, quite a lot, it turns out. Even if the preview version (due later this year) hasn't been relased yet, there are a lot of things you can do to prepare for the big OS upgrade.

Here's a list of 11 things you can do now to start enjoying the benefits of Solaris 11, get ahead of your system peers and be a part of the future of Solaris now!

How To Add Pre-/Post-Scripts to IPS Packages

Package Scripting

My last post about Solaris 11 triggered an interesting discussion with UX-admin about IPS and the lack of pre-/post-scripts for installation/removal.

Assuming that Solaris 11 will be based on IPS just like OpenSolaris, it is certain that sysadmins will have to change a lot in how they create and manage packages, because IPS is fundamentally different from the good old System V packaging system.

So let's explore the lack of scripting hooks in IPS and see if we can find some ways of working around them:

Oracle Solaris 11 is the Future

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Lots of speculation about Solaris and OpenSolaris is happening right now, with an allegedly leaked email being the latest generator of buzz, rumors and troll-ism.

But is that any useful? No.

So let's cut through the shiitake, do some due diligence and focus on some real facts instead.

In this article, we'll check out some real and authoritative sources of Solaris direction, mainly John Fowler's recent webcast about Solaris 11. Then we'll see what our future opportunities as members of the Solaris community are, and close with some pointers to other opinions on Solaris 11.

What Communities Should Do (And What They Shouldn't)

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Ever since Oracle announced that they'll buy Sun, there has been a lot of discussion about the future (some would say "fate") of OpenSolaris in the "community".

In fact, the last 15 months have been very instructive in terms of how communities work, or how they don't.

Let's check out what a community is supposed to do, and what it is not supposed to do, in the light of the latest OpenSolaris announcement: Illumos.

Solaris ZFS, Synchronous Writes and the ZIL Explained

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When talking to customers, partners and colleagues about Oracle Solaris ZFS performance, one topic almost always seems to pop up: Synchronous writes and the ZIL.

In fact, most ZFS performance problems I see are related to synchronous writes, how they are handled by ZFS through the ZIL and how they impact IOPS load on the pool's disks.

Many people blame the ZIL for bad performance, and they even try to turn it off, but that's not good. Actually, the opposite is true: The ZIL is there to help you.

In this article, we'll learn what synchronous writes are, how they're processed by ZFS, what the ZIL is, how it works, how to measure ZIL activity and how to accelerate synchronous write performance, which is at the root of many, if not the majority of ZFS performance problems.

Here Are The Ten Most Important Independent Solaris Blogs

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One of the best information sources for any topic are blogs, and the Oracle Solaris operating system in all its variants (Solaris 10 and OpenSolaris) is no exception. Most of what I learned about OpenSolaris was through blogs, or through interacting with Solaris bloggers.

As a way of saying "Thank You", I did some research and came up with a list of the top ten Solaris related blogs with the highest traffic on the Internet.

But first, let's clear up some basic rules.

ZFS is for 1337 Hax0rz

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The developers of ZFS are a funny bunch of people. You can tell that by watching the "ZFS: The Next Word" talk, meeting them on conferences, reading their blogs or their comments on mailing lists.

And there are also some funny parts in the ZFS source code, too. In fact, if you use ZFS, you'll have a funny joke sitting on your disk, right under your nose!

I was reminded about this particular joke while listening to Ulrich Gräf's excellent talk on ZFS internal data structures during OSDevCon 2009 (watch a video of Ulrich's talk here).

But first, we need to dig a little bit into the world of ZFS data structures.