Discuss March 2010

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295 participants
260 discussions

how does the bootup screen move the cursor around?
by Frank Cox 22 Mar '10

22 Mar '10

While rebooting my computer after installing the new kernel a few minutes ago, I got to wondering about how the initial bootup screen (after grub, before rhgb) is constructed. The "Loading kernel blah blah blah" lines start at the top of the screen and proceed to scroll down as one would expect. But "kernel alive" shows up at the bottom of the screen and then more write-up is printed above it. My question is, how does that happen? Does it write its own esc codes directly to the screen? If so, how does it know what terminal we're using and, therefore, what esc codes to send? Further into the boot sequence something like ncurses could do the heavy lifting, but I don't think we're that far along yet. -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com

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alfa usb wireless 802.11 b/g
by harindrsingh＠slcompu.com 22 Mar '10

22 Mar '10

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Looking for experiences with filesystem choices....
by Tom Bishop 21 Mar '10

21 Mar '10

Lots of opinions out there and I have read and read, so I have a home server that I have finally setup with a hot swap hdd cage and what I am planning on doing is copying my data drive every other day and rotating them offsite, haven't figured out how often though. So I did my first test last night and the backup drive was formatted with ext3 but looking to try to speed things up and was wondering what would be my best choice. Most of my data is on VM's and the hdd files on some of them are quite large, I have used JFS and reiser in the past and was leaning on going with JFS but am tempted to look at XFS. So what I was wondering are what are folks experiences (instead of opinions) with different filesystems and while I want speed it needs to be reliable since it will be my back up data....running centos 5.4 x64 Thanks in advance...

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release
by mattias 21 Mar '10

21 Mar '10

I upgraded my centos from 5.0 to 5.4 But i still see 5.0 n the version number

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How to add virtio modules automatically to initrd in CentOS4?
by Felix Schwarz 21 Mar '10

21 Mar '10

Hi, I migrated a physical CentOS 4.8 server into a VM on a CentOS 5 KVM host. Everything works fine, I even can use the paravirt drivers for network and disk. However the required kernel modules are not put into initrd somehow. Of course I can call "mkinitrd --with virtioblk ..." manually but that's too easy to forget. I searched the web but I didn't find any similar reports... I found some references to /etc/sysconfig/mkinitrd/ but this doesn't work for me. So how can I make sure that the initrd always includes the virtio stuff? fs

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mirrors.centos.org DNS problems?
by Stephen Harris 21 Mar '10

21 Mar '10

>From various place I can't resolve the name; from others it works fine eg on my FIOS line (96.234.66.*): fail from Panix internet (166.84.67.*): success (166.84.5.*): success from bt.net (194.72.6.*): fail from he.net (65.19.175.*): fail from AShosting.nl (81.171.86.*): success -- rgds Stephen

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Multipath and iSCSI Targets
by Joseph L. Casale 20 Mar '10

20 Mar '10

Just started messing with multipath against an iSCSI target with 4 nics. What should one expect as behavior when paths start failing? My lab setup was copying some data on a mounted block device when I dropped 3 of 4 paths and the responsiveness of the server completely tanked for several minutes. Is that still expected? Thanks, jlc

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freenas-like solution for aoe?
by Vadkan Jozsef 20 Mar '10

20 Mar '10

Does anybody know a FreeNAS-like solution, that supports AoE? - Ata over Ethernet? Thank you!

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upgrade
by mattias 20 Mar '10

20 Mar '10

I have centos 5.0 on a server Can i upgrade to the latest without reinstall the hole system?

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Add default quirk to pm-utils (CentOS 5.4)
by Martin Jungowski 20 Mar '10

20 Mar '10

I've installed CentOS 5.4 on my new Lenovo Ideapad S12 (Atom-based 12" notebook) and need to add a quirk to pm-suspend in order for the laptop to actually go to sleep. There's a couple of quirks that work just fine so I really don't have a preference. I found several instructions but most of them have failed me because CentOS's pm-utils is too ancient. Newer versions come with a parameter that adds the quirk to hald automatically, the CentOS version of pm-utils does not have this function yet. I've tried adding a /etc/pm/ config.d/99local config file with DISPLAY_QUIRK_VBE_POST="true" and a /etc/ hal/fdi/information/99local-pm-utils-quirks.fdi manually to no avail: <?xml version="1.0" encoding="ISO-8859-1"?>   <deviceinfo version="0.2"> <device> <merge key="power_management.quirk.dpms_on" type="bool">false</merge> <merge key="power_management.quirk.dpms_suspend" type="bool">false</merge> <merge key="power_management.quirk.vbe_post" type="bool">true</merge> <merge key="power_management.quirk.vbemode_restore" type="bool">false</ merge> <merge key="power_management.quirk.vbestate_restore" type="bool">false</ merge> <merge key="power_management.quirk.vga_mode_3" type="bool">false</merge> </device> </deviceinfo> But nothing seems to work. Running pm-suspend does not do anything, running pm-suspend --quirk-vbe-post puts the Laptop to sleep. Any ideas? Martin -- Rieke Computersysteme GmbH Hellerholz 5 D-82061 Neuried Email: martin(a)rhm.de

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Discuss March 2010