Discuss October 2007

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268 participants
322 discussions

Migrate CentOS 3 to 4 to 5?
by David Christopher Zentgraf 25 Oct '07

25 Oct '07

Hi, After the previous debacle with PHP and MySQL it has been decided that we think about an upgrade from CentOS 3 to 5, since that would solve our problem, if successful. I tried finding information on how to best attempt this, but thanks to a plethora of contradictory information my head is now spinning with a few rpm (rounds per minute). The situation is as follows: Remote box at our host who offers CentOS 3 as the most up-to-date OS, unless you pay them an unholy amount of money for RHEL or Windows licences. Popping in a CD for an upgrade does not work for us. We can and will have the OS restored to a clean post-install state prior to updating. I have little intimate knowledge with CentOS, RPMs or yum, but general good UNIX experience. I know "live" yum migrations are greatly discouraged, but it seems to work for people. The most detailed instructions I seemed to be able to find are here: http://www.centos.org/modules/newbb/viewtopic.php?topic_id=382 Can anybody confirm this to work, is there anything else that's implied but not spelled out? Another, differing approach seems to be this: http:// levine.sscnet.ucla.edu/general/software/tc1000/rmredhat.htm Any ideas about it? Any hints, or rather detailed steps, would be greatly appreciated. Chrs, Dav

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Re: CentOS-5.0-x86_64-bin-DVD-ich9.iso.delta md5 mismatch
by Michael Rock 25 Oct '07

25 Oct '07

David wrote: >I'll test DVD tomorrow. Today new kernel RPMS are > being built. What ptions are you talking about? > David all-generic-ide irqpoll Without irqpoll it just hangs and without all-generic-ide it get a kernel panic. So I still need both to recognize the disk and continue booting. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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dovecot fails to start at boot, but starts manually
by Kenneth Porter 25 Oct '07

25 Oct '07

dovecot-1.0-1.2.rc15.el5 on CentOS 5 I reboot the server and dovecot fails to start. But I can then issue "service dovecot start" and it starts up just fine. How to debug? I don't see anything in /var/log/messages nor /var/log/maillog. I did have to set SELinux to permissive (in /etc/selinux/config), as dovecot can't get at its SSL certs. I'm debugging that independently. (SELinux is also disabled for clamav, another item to debug.)

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VMware not correctly configured for running kernel
by Rogelio 25 Oct '07

25 Oct '07

Something happened over the weekend power-related on my VMware test server, and when I came back and restarted my VMware server box (running CentOS), I got the following message: "VMware Server is installed, but it has not been (correctly) configured for the running kernel. To (re-)configure it, invoke the following command: /usr/bin/vmware-config.pl." I ran that .pl script, answered all the questions (just entering in the default values), and all seems to work ok now. Is this someting VMware related? CentOS 4 related? Or possibly some misconfiguration on my part? This box has been working fine for months (and has been rebooted many times), so I'm not sure what "changed" (certainly nothing on the host OS level). Any help pointing me in the right direction would be greatly appreciated.

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kmod-drbd
by Ross Cavanagh 25 Oct '07

25 Oct '07

hi, I was following this wiki http://wiki.centos.org/HowTos/Ha-Drbd for my CentOS 5 installation, but it appears that the kmod-drdb is not for the newest kernel. Would anyone know how long before this is updated? kmod-drbd i686 8.0.6-1.2.6.18_8.1.14.el5 extras kernel i686 2.6.18-8.el5 installed

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yum update question and kernel-smp-devel
by James Pearson 25 Oct '07

25 Oct '07

I have a local yum repository for CentOS4, and from time to time I add new (custom) kernel RPMS. However, when I run 'yum update' on an SMP box, yum 'installs' the new kernel, kernel-devel and kernel-smp packages, but 'updates' the kernel-smp-devel package. i.e. I end up with multiple versions of the kernel, kernel-devel and kernel-smp packages, but only the latest kernel-smp-devel What do I need to do to get the kernel-smp-devel RPMS to 'install' instead of 'update'? Thanks James Pearson

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Quota inside chroot environment
by David E. Meier 25 Oct '07

25 Oct '07

Hi List, I have users chroot'ed on a CentOS 5 server. They should be able to check their current disk usage with the quota command. Basically, it works - however, there are some drawbacks I hope someone can help me on: In order for the user to access the aquota.user file I hard-linked it into the users root. Unfortunately the users do not 'see' any changes in disk usage until quotaoff/on is executed. I have a FreeBSD 5.3 server with the same setup where this step is not required. I also noticed while quota is enabled I cannot even create the hard link on the aquota.user file into a users root. Can someone explain what's wrong about my setup or does anyone have another approach to get quotas working for chroot'ed users? David

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group descriptors corrupted on ext3 filesystem
by Barry Brimer 25 Oct '07

25 Oct '07

I am unable to mount an ext3 filesystem on RHEL AS 2.1. This is not the boot or root filesystem. When I try to mount the file system, I get the following error: mount: wrong fs type, bad option, bad superblock on /dev/sdj1, or too many mounted file systems When I try to run e2fsck -vvfy /dev/sdj1 I get the following error: Group descriptors look bad... trying backup blocks... Segmentation fault When I try running e2fsck -b 294912 -vvfy /dev/sdj1 (providing backup superblock location ..which I tried several of) I get the following error: Segmentation fault In dmesg, after trying to mount the filesystem, I get the following error: EXT3-fs: group descriptors corrupted ! EXT3-fs error (device sd(8,145)): ext3_check_descriptors: Block bitmap for group 128 not in group (block 523)! Any ideas? Thanks, Barry

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Re: CentOS-5.0-x86_64-bin-DVD-ich9.iso.delta md5 mismatch
by Michael Rock 24 Oct '07

24 Oct '07

btw - I installed your x86_64 rpms that has the ich9 patch directly on that box but it still will not boot without all the options. --- Michael Rock <mikerocks65(a)yahoo.com> wrote: > > David wrote: > > Now there are right md5sums and even > > x86_64 iso.delta. > > David > > I tried using applydeltaiso and it creates a 2gb ISO > but I notice it fails on applying. > > kdnssd-avahi-devel.i386: copying unchanged payload > kernel-xen.x86_64 (???): applying delta > new payload open failed > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam > protection around > http://mail.yahoo.com > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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powernow-k8 config
by Linux Man 24 Oct '07

24 Oct '07

Hello I'm building a router/proxy/firewall, the default governor is ondemand, but for this application, what governor is best suited? (for example conservative?) Thanks at all! Best regards

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Discuss October 2007