Apr
01
2010
0

Fedora 12 / boot / initrd / initramfs

I have been using Fedora 12 (under HVM – Oracle VM 2.2) to build latest
kernels from git (kernel.org), identify bugs, bisect, build and test.

On Xen HVM Fedora 12 is quite slow (a full kernel build takes 3.5
hrs). I have noticed
that initrd / mkinitrd does not have a future as Fedora 12 uses dracut
to create initramfs (and initramfs – not initrd – check this nice blog entry).

The
initramfs initially was 60 GB and it took ages for the guest to boot up
.. Unbearable! .. With the idea by jch to remove plymouth
(graphical boot) from initramfs – by telling dracut not to include it I
added the following to /etc/dracut.conf file:
   omit_dracutmodules=”plymouth”
That made my initramfs file of 45MB size – which is still big but at least bootup takes shorter time. Now I can bisect happily 🙂

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Written by in: kernel,linux | Tweet This
Apr
26
2009
0

Twitter Client Applications on Linux

I prefer to use the Adobe AIR applications and I use/used the following on Linux (Ubuntu 8.10 and OEL5): (more…)

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Apr
23
2009
3

Open Source Virtualization for Smaller Carbon Footprint

April 22, 2009 was the Earth Day and over Twitter we have been sharing various ideas flowing around ways to celebrate the day. (more…)

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Written by in: linux,virtualization,xen | Tweet This
Apr
09
2009
0

How to Distinguish Environment Variables from Different Shells in “bash”?

Every instance of the command line shell (thus every process) on Unix (and hence Linux) has a different set of environment variables. Actually different shell instances you may have the same variable, but set to different values.

If you are doing a system wide job and you are using shell scripting, you would like to know whether you are referring to the same or different local environment variables. The Bourne Again SHell (bash) provides a handy syntax for that. (more…)

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Mar
31
2009
0

How to Set/Check the Arguments Used with “ntpd” Service

On RHEL, OEL, CentOS and various other Linux distribution the Network Time Protocol (NTP) daemon can be run with various options. (more…)

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