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swiotlb causing panics on 8gig ia32e systems running Centos 3.4 x86_64
by James Olin Oden 13 Apr '05

13 Apr '05

Hi All, I have several ia32e systems with 8 gig that panic on install and first boot. The panic is arch/x86_64/swiotlb.c (working from memory so I might be a bit off) and its in the routine that I think is trying to allocate another chunk of memory for the "Software I/O Translation Buffer". I am guessing it needs to allocate contiguous chunks of memory and that is why it fails on the realloc. Anyway, on install the only way I can get the install to work is to set "mem=512" or something way below 8Gig. Whereas once the machine is loaded I can get it to boot by without a panic by passing the kernel arg swiotlb set to some rather larger value like 16384. Doing this with varying values during install yields either the same panic or causes a failure of the kernel to detect the cdrom device due to some "resource conflict", which why on a hunch a fellow engineer tried the mem option. Anyway, we can live with this work around if we have to, but I was wondering a couple of things: - Is there any metric to choose a proper value for ioswtbl? - Since its failing to do the re-alloc in the boot kernel am I likely to see this occur on the installed kernel at some inopportune moment? - If there is such a metric does anyone have any ideas on how it might could be grafted into the kernel itself in such a way that all interested parties would be OK with such a patch? And of course if anyone else has seen this, I would be interested in their knowledge on the issue. Just so you know I familiar with this enough to know that ia32e (nocona/lindhurst 64 bit one off copy of AMD 64 bit processors) does not contain an IOMMU (unlike the AMD processor) and thus the kernel developers had to do a serious hack creating this bounce buffer like thing. Which is all to say I understand why its there, and that on the ia32e systems I have to live with it, I just want it to be stable or find some way to make it so. Thanks...james

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multiple external addresses on one interface
by ryanag＠zoominternet.net 13 Apr '05

13 Apr '05

I want to add two IP ranges on one NIC card (eth0 and eth0:1). Has anyone done this before? The CentOS 4 gui keeps locking up when I try it there and the command line ifconfig seems to work, but ifup always returns the error that is never heard (no such device) of eth0:1 thanks

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Default Firewall Entries
by Mickael Maddison 13 Apr '05

13 Apr '05

Hello CentOS, I'm curious... there seems to be a couple of default firewall rules that I'm not familiar with in the CentOS 4.0 # Firewall configuration written by system-config-securitylevel # Manual customization of this file is not recommended. *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :RH-Firewall-1-INPUT - [0:0] -A INPUT -j RH-Firewall-1-INPUT -A FORWARD -j RH-Firewall-1-INPUT -A RH-Firewall-1-INPUT -i lo -j ACCEPT -A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT -A RH-Firewall-1-INPUT -p 50 -j ACCEPT -A RH-Firewall-1-INPUT -p 51 -j ACCEPT -A RH-Firewall-1-INPUT -p udp --dport 5353 -d 224.0.0.251 -j ACCEPT -A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 21 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 25 -j ACCEPT -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited COMMIT Particularly, the 5353 udp allowing from 224.0.0.251 and the 631 udp. Anyone know what these are for, and if they should be disabled? -- Best regards, Mickael mailto:mike@kamloopsbc.com

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Manual Paritioning with fdisk
by Gerald Waugh 13 Apr '05

13 Apr '05

How can I use fdisk to partition when installing CentOS4 instead of using 'auto' or disk-druid I want to make RAID 'fd' type partitions for hda and hdc I tried every ctrl-alt Fx and can't get to a shell TIA Gerald

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HP ML330 install
by Jay 13 Apr '05

13 Apr '05

Greetings: HP has drivers for the this controler but how do you get the drivers working for the install on Centos 4.0 ? Integrated Dual Channel Ultra ATA 100 IDE Adapter (ATA Models) I extracted the files from this RPM and placed on a CD. hpacucli-7.21-17.linux.rpm boot with the driver disk option and it does not find drivers. I'm I on the right track? Thanks -Jay

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Re: [CentOS] PPTP Client and Cent 4
by Steven Vishoot 13 Apr '05

13 Apr '05

--- Hard Hold <hard2hold(a)gmail.com> wrote: > Trying to install the pptp client here: > > http://pptpclient.sourceforge.net/ > > I get down to this step, but get errors: > > rpm --install php-gtk-pcntl-1.0.1-2.i386.rpm > > warning: php-gtk-pcntl-1.0.1-2.i386.rpm: V3 DSA > signature: NOKEY, key > ID b56a8bac > error: Failed dependencies: > libglade is needed by > php-gtk-pcntl-1.0.1-2.i386 > libglade.so.0 is needed by > php-gtk-pcntl-1.0.1-2.i386 > libxml is needed by > php-gtk-pcntl-1.0.1-2.i386 > libxml.so.1 is needed by > php-gtk-pcntl-1.0.1-2.i386 > > Been googleing all over to find these packages, but > not with much > luck. my last yum update looks like it installed > the libxml stuff: > > Apr 13 12:30:23 Updated: libxml2.i386 2.6.16-6 > Apr 13 12:30:33 Updated: gaim.i386 1:1.2.1-4.el4 > Apr 13 12:30:41 Updated: libxml2-devel.i386 2.6.16-6 > Apr 13 12:30:42 Updated: libxml2-python.i386 > 2.6.16-6 > > Just wondering if anyone has been able to get this > package installed > with cent 4 or if there is something else I can use > to make a pptp > connection. > > Thanks > > Rob > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos > Hello Rob, Would trying to use yum instead help you out, since it will solve your dep problems. yum install php-gtk-pcntl-1.0.1-2 just a minor thought just my half cent Steven "On the side of the software box, in the 'System Requirements' section, it said 'Requires Windows or better'. So I installed Linux." __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/

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yum update issue
by William Warren 13 Apr '05

13 Apr '05

I am getting this when trying to update a machine: warning: rpmts_HdrFromFdno: V3 DSA signature: NOKEY, key ID 6b8d79e6 public key not available for rsync-2.6.4-1.2.el4.rf.i386.rpm This brings yum to a halt. Here is my yum.conf: [main] cachedir=/var/cache/yum debuglevel=2 logfile=/var/log/yum.log pkgpolicy=newest distroverpkg=centos-release tolerant=1 exactarch=1 retries=20 obsoletes=1 gpgcheck=1 logfile = /var/log/yum.log # PUT YOUR REPOS HERE OR IN separate files named file.repo # in /etc/yum.repos.d [dag] name=Dag RPM Repository for Red Hat Enterprise Linux baseurl=http://apt.sw.be/redhat/el$releasever/en/$basearch/dag gpgcheck=1 enabled=1 -- Computer Housecalls, Networks, Security, Web Design: http://www.emmanuelcomputerconsulting.com My "Foundation" verse: Isa 54:17 No weapon that is formed against thee shall prosper; and every tongue that shall rise against thee in judgment thou shalt condemn. This is the heritage of the servants of the LORD, and their righteousness is of me, saith the LORD. -- carpe ductum -- "Grab the tape" CDTT (Certified Duct Tape Technician) Linux user #322099 Machines: 206822 256638 276825 http://counter.li.org/

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PPTP Client and Cent 4
by Hard Hold 13 Apr '05

13 Apr '05

Trying to install the pptp client here: http://pptpclient.sourceforge.net/ I get down to this step, but get errors: rpm --install php-gtk-pcntl-1.0.1-2.i386.rpm warning: php-gtk-pcntl-1.0.1-2.i386.rpm: V3 DSA signature: NOKEY, key ID b56a8bac error: Failed dependencies: libglade is needed by php-gtk-pcntl-1.0.1-2.i386 libglade.so.0 is needed by php-gtk-pcntl-1.0.1-2.i386 libxml is needed by php-gtk-pcntl-1.0.1-2.i386 libxml.so.1 is needed by php-gtk-pcntl-1.0.1-2.i386 Been googleing all over to find these packages, but not with much luck. my last yum update looks like it installed the libxml stuff: Apr 13 12:30:23 Updated: libxml2.i386 2.6.16-6 Apr 13 12:30:33 Updated: gaim.i386 1:1.2.1-4.el4 Apr 13 12:30:41 Updated: libxml2-devel.i386 2.6.16-6 Apr 13 12:30:42 Updated: libxml2-python.i386 2.6.16-6 Just wondering if anyone has been able to get this package installed with cent 4 or if there is something else I can use to make a pptp connection. Thanks Rob

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NVidia Dual Head
by Chris Hammond 13 Apr '05

13 Apr '05

Does the basic NV driver in CentOS 4 support basic dual head on NVidia chip sets? Thanks Chris

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Constant disk activity
by first last 13 Apr '05

13 Apr '05

Hi, I am running centos on a laptop and the HD keeps on making noises every so often, even when I go to runlevel 1 and stop everything that could be doing so (hotplug, smartd, cron, anacron, atd, syslogd...). Is there any way of finding out what is accessing the disk? Not only it shortens battery life, it is annoying while working in a quiet room. Thanks Gabriel Send instant messages to your online friends http://uk.messenger.yahoo.com

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