Userspace cgroups in Fedora 14

 fedora, Linux, W00t!  No Responses »
Nov 212010
 

There was a lot of buzz on the interblags about a 200-line kernel patch that enables per-tty cgroups automatically. Apparently, one can add them trivially to their home directory without having to patch any kernels.

This blog post talks about how to do it, but it didn’t cooperate with Fedora 14 very well. A bit of googleing later and I found this mailing list post that did it for me. Now I have userspace cgroups for each terminal I open. Handy, I suppose. Might be more useful on an SSH server to guarantee that each person logging in can’t overwhelm the system for the others.

 Posted by David Kowis at 18:08  Tagged with:

Fedora 14 and Intel Gigabit Adaptors

 fedora, Linux  No Responses »
Nov 212010
 

To be fair, it’s not Fedora 14 that’s at fault. The 2.6.35 kernel has a regression in the e1000e driver for some Ethernet adaptors.

It was quite tricky to figure out, especially right after 14 came out, as I didn’t have an ethernet connection, and when I was able to get the connection up, and I asked on the IRC channel, no one had any insight. I let 14 stew a while, and the rest of the internet came up with similar problems. Turns out that the kernel driver included in 2.6.35 has issues. There’s some patches in the works, but I don’t know if they’ll get pulled down into 2.6.35. The fix is in 2.6.36.

Until then, you can get the latest driver directly from the e1000e’s SourceForge website here. Make, then make install it as root and you’ll be good to go. This driver version worked for me on a Intel Corporation 82566DC Gigabit Network Connection (rev 02).

 Posted by David Kowis at 16:39  Tagged with: , ,

Building ruby 1.9 on Fedora 13

 fedora, Ruby  No Responses »
Jun 192010
 

Was harder than it should’ve been. I got annoyed.

You need to install openssl-devel, zlib-devel, bison, gcc, make, patch, tar, and maybe gcc-c++ (although I don’t think this one is needed).

Go get the latest ruby 1.9 source, as of this writing 1.9-p378, and extract it somewhere. Then go get the patches on this bug, at the specific comment. You will need to apply at least the openssl-build-fix patch, since fedora uses openssl 1.0 and it’s not yet into ruby 1.9. Then follow your typical ./cofnigure, make, and make install stuff. I installed mine into a prefix of /opt/ruby so that it wouldn’t affect any fedora ruby stuff that it might want. I then added ruby’s path to the end of my user’s PATH variable.

That’ll get you a working ruby 1.9 in Fedora.

 Posted by David Kowis at 12:19  Tagged with: ,

Xen 4.0 released

 fedora, Source Mage, W00t!  No Responses »
Apr 072010
 

Finally!

From the official page:

The Xen 4.0 release contains a number of important new features and updates including:

  • Blktap2 – High performance VHD implementation supporting snaphots and clonces including live snapshots
  • Netchannel2 – Support for new Smart NICs with multi-queue and SR-IOV functionality
  • Fault Tolerance – Live transactional synchronization of VM state between physical servers
  • Libxenlight – New library providing higher-level control of Xen between various toolstacks
  • PV-USB and VGA Pass-through

SourceMage has already updated packages for it.

There’s a repository and src RPMs available for Fedora here. Specifically the Xen 4.0 src RPM. I’ll try to remember to fire up a build on my xen DomU that I use to build RPMs for me :)

 Posted by David Kowis at 06:37  Tagged with: , , , ,

Fedora 12 Xen RPMs

 fedora, Linux  No Responses »
Nov 172009
 

I built these on a recently updated Fedora 12 box. I haven’t yet had an opportunity to test them. If you do use them and they work great, or not, post in the comments please.

 Posted by David Kowis at 14:02  Tagged with: , , ,
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