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Re: [CentOS] Centos 5.5 - Kernel Panic while booting.
by Lisandro Grullon 18 Dec '10

18 Dec '10

Akemi, I went through the different mirrors and was unable to locate the ISO as it is stated as deprecated or unsupported, is there any plans to fix this issue in 5.6 or rather 6.x release. It appears that the latest build from Centos was built back in may, lots of bugs have emerge since them including this one relating to a kernel panic. Please advise in the location of 5.4, i am willing to try it. >>> Akemi Yagi 12/17/10 7:56 PM >>> On Fri, Dec 17, 2010 at 4:26 PM, Lisandro Grullon wrote: > Tru, looks like a bug in centos, I just loaded RHEL 6 without any issues. I > dont think it has something to do with the actual image file, but in any > case maybe I should re-download the entire DVD again just to make sure. > Thank you Tru. > >>>> Tru Huynh 12/17/10 6:47 PM >>> > maybe you are hitting: http://bugs.centos.org/view.php?id=4581 > > Tru This is not a CentOS bug. As stated in the KB articles quoted in the bug report: https://access.redhat.com/kb/docs/DOC-31516 https://access.redhat.com/kb/docs/DOC-38013 the patch is in the kernel-2.6.18-194.3.1 and onward. CentOS/RHEL 5.5 comes with kernel-2.6.18-194 which has the bug. RHEL-6's kernel is much newer at 2.6.32-71, so it does not have this bug. Therefore to get around this issue, as suggested in one of the KB articles, you first install CentOS *5.4* and then update it to the current kernel thus skipping the problematic kernel. Akemi _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos

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Re: [CentOS] Centos 5.5 - Kernel Panic while booting.
by Lisandro Grullon 18 Dec '10

18 Dec '10

Tru, looks like a bug in centos, I just loaded RHEL 6 without any issues. I dont think it has something to do with the actual image file, but in any case maybe I should re-download the entire DVD again just to make sure. Thank you Tru. >>> Tru Huynh 12/17/10 6:47 PM >>> On Fri, Dec 17, 2010 at 06:23:52PM -0500, Lisandro Grullon wrote: > Dear centos community, > I was in the process of loading the latest 5.5 release of centos in a VMWARE ESX 4.1 host as my first virtual machine, suddenly while booting I got a panic error with the following on screen. Can someone point me in the right direction. This machine has 24 cores and I allocated 1 for Centos to use with 1024MB of memory. Any clues or workaround to solve this problem? Thank you in advance. maybe you are hitting: http://bugs.centos.org/view.php?id=4581 Tru -- Tru Huynh (mirrors, CentOS i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B

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Re: [CentOS] Centos 5.5 - Kernel Panic while booting.
by Lisandro Grullon 17 Dec '10

17 Dec '10

Tru, you nailed it right. I will load Ubuntu and Debian and will report back, this may be a bug in the loading process. I did install this system with Centos by itself and it load ok, but the virtual machine its not loading and it just keep crashing with the same error as the bug you provided/posted. Maybe someone can shine some light on this. Thank you. >>> Tru Huynh 12/17/10 6:47 PM >>> On Fri, Dec 17, 2010 at 06:23:52PM -0500, Lisandro Grullon wrote: > Dear centos community, > I was in the process of loading the latest 5.5 release of centos in a VMWARE ESX 4.1 host as my first virtual machine, suddenly while booting I got a panic error with the following on screen. Can someone point me in the right direction. This machine has 24 cores and I allocated 1 for Centos to use with 1024MB of memory. Any clues or workaround to solve this problem? Thank you in advance. maybe you are hitting: http://bugs.centos.org/view.php?id=4581 Tru -- Tru Huynh (mirrors, CentOS i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B

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Centos 5.5 - Kernel Panic while booting.
by Lisandro Grullon 17 Dec '10

17 Dec '10

Dear centos community, I was in the process of loading the latest 5.5 release of centos in a VMWARE ESX 4.1 host as my first virtual machine, suddenly while booting I got a panic error with the following on screen. Can someone point me in the right direction. This machine has 24 cores and I allocated 1 for Centos to use with 1024MB of memory. Any clues or workaround to solve this problem? Thank you in advance. Unable to handle kernel NULL pointer dereference at 0000000000000040 RIP: [] cpuid4_cache_lookup+0x256/0x356 PGD 0 Oops: 0000 [1] SMP last sysfs file: CPU 0 Modules linked in: Pid: 1, comm: swapper Not tainted 2.6.18-194.el5 #1 RIP: 0010:[] [] cpuid4_cache_lookup+0x256/6 RSP: 0000:ffff81010fc75d60 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000060 RCX: 00000000000006aa RDX: 0000000000000000 RSI: 0000000000000060 RDI: 0000000000000003 RBP: ffff81010f765580 R08: 0000000000000001 R09: 0000000000000040 R10: ffff81010fc75cf0 R11: 0000000000000060 R12: 0000000000000080 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000003 FS: 0000000000000000(0000) GS:ffffffff803cb000(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000040 CR3: 0000000000201000 CR4: 00000000000006e0 Process swapper (pid: 1, threadinfo ffff81010fc74000, task ffff81010fc657a0) Stack: ffff81010fc75e00 000280000f765ec0 0000000000000000 0000000000000000 0000000040020140 00000000000000d0 ffff810140020140 0000000000000286 00000000000006a9 0000000000000000 0000000017c0003f 0000000000000000 Call Trace: [] cacheinfo_cpu_callback+0xe9/0x516 [] cacheinfo_cpu_callback+0x134/0x516 [] cache_sysfs_init+0x39/0x54 [] init+0x1f9/0x2f7 [] child_rip+0xa/0x11 [] acpi_ds_init_one_object+0x0/0x80 [] init+0x0/0x2f7 [] child_rip+0x0/0x11 Code: 8b 72 40 48 8d 4c 24 1c 48 8b 7a 20 ba c4 01 00 00 e8 5f 77 RIP [] cpuid4_cache_lookup+0x256/0x356 RSP CR2: 0000000000000040 <0>Kernel panic - not syncing: Fatal exception

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Re: [CentOS] CentOS 5.5 Sofware RAID1
by Lisandro Grullon 17 Dec '10

17 Dec '10

When you boot does the OS see both drives, if so, why not configure using LVM. >>> Matt 12/17/10 6:29 PM >>> I have the CentOS 5.5 install DVD and trying to install with software RAID1 on two 2TB SATA drives. The CentOS install only sees one drive. This is a Supermicro motherboard with fakeraid turned off in bios. I tried the trick like so: dd if=/dev/zero of=/dev/sda bs=512 count=64 dd if=/dev/zero of=/dev/sdb bs=512 count=64 Still no go. linux rescue console does see both sda and sdb. Whats going on? _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos

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Passing LD_LIBRARY_PATH through sudo
by Alexander Farber 17 Dec '10

17 Dec '10

Hello, I have a CentOS 5.5/64bit VM, where I only have sudo rights: afarber ALL=(ALL) NOPASSWD: ALL I'm trying to pass LD_LIBRARY_PATH through sudo to install DBD::Oracle ( https://rt.cpan.org/Ticket/Display.html?id=63678 ) and have tried using "sudo -E" and also changing these lines in the stock /etc/sudoers: Defaults !env_reset Defaults env_keep = "LD_LIBRARY_PATH \ COLORS DISPLAY HOSTNAME HISTSIZE INPUTRC KDEDIR \ LS_COLORS MAIL PS1 PS2 QTDIR USERNAME \ LANG LC_ADDRESS LC_CTYPE LC_COLLATE LC_IDENTIFICATION \ LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC \ LC_PAPER LC_TELEPHONE LC_TIME LC_ALL LANGUAGE LINGUAS \ _XKB_CHARSET XAUTHORITY" Still my test call fails: afarber@VM:~> echo $LD_LIBRARY_PATH /usr/lib/oracle/11.2/client64 afarber@VM:~> sudo -E perl -e 'print $ENV{LD_LIBRARY_PATH}'; afarber@VM:~> afarber@VM:~> sudo -E perl -e 'print $ENV{HOME}'; /home/afarber Does anybody please have a suggestion here? Thank you Alex

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Stripping silent periods from MP3s
by Keith Roberts 17 Dec '10

17 Dec '10

I'm on Centos 5.5, and would like to use sox to strip out any periods of silence > 5 seconds from a batch mp3 audio files. Googling I found sox, but it does not seem to support mp3 files by default. The man page says: .mp3 MP3 Compressed Audio MP3 audio files come from the MPEG standards for audio and video compression. They are a lossy compression format that achieves good compression rates with a mini- mum amount of quality loss. Also see Ogg Vorbis for a similar format. MP3 support in SoX is optional and requires access to either or both the external libmad and libmp3lame libraries. To see if there is support for Mp3 run sox -h and look for it under the list of supported file formats as "mp3". libmad is installed: Installed Packages Name : libmad Arch : i386 Version : 0.15.1b Release : 4.el5.rf Size : 138 k Repo : installed Summary : MPEG audio decoding library URL : http://www.underbit.com/products/mad/ License : GPL Description: MAD (libmad) is a high-quality MPEG audio decoder. It currently : supports MPEG-1 and the MPEG-2 extension to Lower Sampling : Frequencies, as well as the so-called MPEG 2.5 format. All three : audio layers (Layer I, Layer II, and Layer III a.k.a. MP3) are fully : implemented. : : MAD does not yet support MPEG-2 multichannel audio (although it : should be backward compatible with such streams) nor does it : currently support AAC. SoX is installed: Name : sox Arch : i386 Version : 12.18.1 Release : 1.el5_5.1 Size : 659 k Repo : installed Summary : A general purpose sound file conversion tool. URL : http://sox.sourceforge.net/ License : GPL Description: SoX (Sound eXchange) is a sound file format converter SoX can convert : between many different digitized sound formats and perform simple : sound manipulation functions, including sound effects. [root@karsites ~]# sox -h sox: Version 12.18.1 Usage: [ gopts ] [ fopts ] ifile [ fopts ] ofile [ effect [ effopts ] ] gopts: -e -h -p -q -S -V fopts: -r rate -c channels -s/-u/-U/-A/-a/-i/-g/-f -b/-w/-l/-d -v volume -x effect: avg band bandpass bandreject chorus compand copy dcshift deemph earwax echo echos fade filter flanger highp highpass lowp lowpass mask mcompand noiseprof noisered pan phaser pick pitch polyphase rate repeat resample reverb reverse silence speed stat stretch swap synth trim vibro vol effopts: depends on effect Supported file formats: aiff al alsa au auto avr cdr cvs dat vms gsm hcom la lu maud nul ossdsp prc raw sb sf sl smp sndt sph 8svx sw txw ub ul uw voc vorbis vox wav wve Yet the mp3 support is not showing up for SoX in the above list of supported file formats. Any suggestions how to tell SoX to use the mp3 format I need please? Or are there any other programs that can be used to strip silent periods from MP3's? Using Audacity to manually edit each sound file is definately NOT and option. Kind Regards, Keith Roberts -- In theory, theory and practice are the same; in practice they are not. This email was sent from my laptop with Centos 5.5

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Intel NIC
by Helmut Drodofsky 17 Dec '10

17 Dec '10

Hallo, actual Intel Ethernet cards PCI-E - Are normal recognized by Centos 5.5 Live CD - Not recognized by 5.2 Because of vmware, I will use 5.2 Update kernel? Update Modules? What Module? Thanks for help Helmut

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/dev/null permission changes figured out
by Joe Pruett 17 Dec '10

17 Dec '10

a while back i reported an issue where /dev/null was getting set to 600 perms after a system update. i finally figured out what it is. i don't care about failed logins and have limited space on some servers, so i symlinked /var/log/btmp to /dev/null. the initscripts package does a chmod 600 /var/log/btmp, so voila /dev/null gets changed. so now i know why it happened just to me. i now need to figure out a better way to deal with btmp. any ideas from the list?

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Opinions wanted...user management options....Home network
by Tom Bishop 17 Dec '10

17 Dec '10

So I need some opinions on which way to go, for my home network I am running almost all linux, and I am starting to want to manage all of the users accounts, uid/gids for all of the devices some of which are laptops...so what is the best path going forward, on the server end I am running Centos5.5 and will be moving to centos 6 once it is released...the laptops and desktops run various flavors of Ubuntu/Fedora..Thanks in advanced, if there are any questions let me know....

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