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SMP kernel on old Asus CUV4X-DLS motherboard
by Aleksandar Milivojevic 11 Apr '06

11 Apr '06

Just wondering if anybody managed to get SMP kernel to boot properly on an old Asus CUV4X-DLS motherboard (older dual P-III)? I had this problem only with this specific motherboard and 2.6 kernels. First time couple of years ago. And again today (I've just installed CentOS4 on a box that used to run RH7.3). Previously those machines were running Red Hat 7.3 (2.4 kernels), and with 2.4 SMP kernel all worked fine. The issue I'm having is that when device driver modules are loaded from initrd's init script, insmod doesn't wait until each driver it loads is completely loaded and initialized. It just exits with right away and init script goes on and starts loading next device driver. It looks like bang, system loads all of them in parallel. Of course, this doesn't work really well. Before RAID and SCSI drivers have time to scan the bus and detect disk drives, vgscan is already done, and of course it doesn't find any volume groups, since previous device drivers haven't yet detected any drives. All I can see on console is interleaved messages from various device drivers intializing with messages from LVM, followed by kernel panic because it couldn't mount root file system. All completely out of order. The output on console looks something like this: Loading scsi_mod.ko module Loading sd_mod.ko module Loading 3w-xxxx.ko module Loading scsi_transport_spi.ko module Loading sym53c8xx.ko module Loading dm-mod.ko module Loading jbd.ko module Loading ext3.ko module Loading dm-mirror.ko module Loading dm-zero.ko module Loading dm-snapshot.ko module Here goes output from loaded modules, in no particular order, all totally mixed up, couple of lines from 3w-xxxx, then couple of lines from sym53c8xx, then couple of lines from 3w-xxxx again and so on... By the time vgscan is run, even the jbd and ext3 modules are not yet completely loaded in kernel. If I boot single processor kernel, all is fine. Device drivers are loaded one by one, insmod waits for device driver to initialize properly. Just as it should be. The output on console looks like: Loading scsi_mod.ko module Loading sd_mod.ko module Loading 3w-xxxx.ko module Otuput of 3w-xxxx detecting RAID volumes Loading scsi_transport_spi.ko module Loading sym53c8xx.ko module Output of sym53c8xx detecting SCSI devices Loading dm-mod.ko module Loading jbd.ko module Loading ext3.ko module Loading dm-mirror.ko module Loading dm-zero.ko module Loading dm-snapshot.ko module The workaround I have to get system to boot using SMP kernel is to modify init script from initrd, and insert bunch of sleeps after each insmod to give device driver ehough time to initialize before next device driver (wich might depend on one or more previous device drivers) is loaded. This kind of works, but it's just an ugly hack to hide underlying problem. Of course, there is also this nasty feeling that something inside kernel doesn't really work well and that other things might break or that data might get corrupted. When I was Googling around, I also found suggestion to turn off MPS 1.4 in BIOS, but it made no difference in my case. Of course, turning ACPI off can't be done on SMP kernel (and system works fine with ACPI using single-processor kernel). I'm still not sure if this is problem with kernel (things worked fine with 2.4 SMP kernels), or some strange bug in (new) insmod executable that surfaces only when using this particular motherboard. Anyhow, to conclude this lenghty email... Any success/failure story with running 2.6 SMP kernel based distro (particuallary CentOS4) on this motherboard is more than welcome. -- See Ya' later, alligator! http://www.8-P.ca/

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yum update conflict
by Bowie Bailey 11 Apr '06

11 Apr '06

I updated my i386 systems without any problems, but when I tried to update one of my x86_64 systems, I got an error from yum. Transaction Check Error: file /usr/include/libdevmapper.h from install of device-mapper-1.02.02-3.0.RHEL4 conflicts with file from package device-mapper-1.01.04-1.0.RHEL4 So it can't install the newer package because it conflicts with the older package??? What's going on here? Should I force the upgrade in this case, or is there a better solution? -- Bowie

2 1

Sparc netinstall images
by CaptBeany 11 Apr '06

11 Apr '06

Im trying to install centos 4.2(beta) on a sparc machine (without a working cdrom) via a netboot install. Ive downloaded the sparc 4.2(beta) iso images but cant seem to find the tftp boot files I need to kick the process off. Are the images there but I cant seem to identify them or is there a wedsite I can donwload the images from ? Many thanks ___________________________________________________________ Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com

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my email address???
by rado 11 Apr '06

11 Apr '06

oh boy, looks like I screwed things up some trying to add hosting for another domain besides my own I thought I went by the book here but something sure ain't right. my real email address is rado(a)rivers-bend.com then a few days ago, I tweaked sendmail.mc I think it was to masquerade ideallightinginc.com (the other domain) now I just noticed I am showing as rado(a)ideallighting.com uggggg now what? John Rose

5 8

SATA Raid 5 and losing a drive
by Andy Green 11 Apr '06

11 Apr '06

Hi Folks - Using CentOS on a server destined to have a dozen SATA drives in it. The server is fine, raid 5 is set up on groups of 4 SATA drives. Today we decide to disconnect one SATA drive to simulate a failure. The box trucked on fine... a little too fine. We waited some minutes but no problem was visible in /proc/mdstat or in /var/log/messages or on the console. I ran mdadm --monitor /dev/md0 and no problem was shown. We rebooted still without the drive and finally mdadm --monitor reported that the array was running in a degraded state. We reconnected the SATA drive and still nothing was reported and nothing happened with the raid state according to /proc/mdstat. I expected the box to keep on trucking but to become freaked out with warnings all over the shop. What should I have expected in this case and what should I do to become aware of evil events like the drive melting remotely? -Andy

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Postfix on VLANs
by Andrew Vong 11 Apr '06

11 Apr '06

Hi All, I'm having some problems getting postfix to relay mail. I'd appreciate any tips. Perhaps there are some settings which I may have missed, somewhere. The postfix mail server is on VLAN 250 (192.168.250.0) whilst I have several other users on other VLANs (e.g. 91, 92, 93, etc... 192.168.91.0, 192.168.92.0, 192.168.93.0, etc...). So, if I had a PC sitting on VLAN 91 with IP 192.168.91.1, I am unable to relay mail BUT checking mail via POP3 works fine. In /etc/postfix/main.cf, I have set the following:- mynetworks_style = subnet mynetworks = 168.168.91.0/28, 127.0.0.0/8 Do you know what setting I may be missing? Thanks. Best Regards, Andrew

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strange issue with bind
by Craig White 11 Apr '06

11 Apr '06

CentOS 4.3 - running bind chroot I have similar set up at various clients but none have this problem... # service named restart Stopping named: named: already running [root@srv1 ~]# tail -n 2 /var/log/messages apache Apr 10 20:10:52 srv1 named[4345]: invalid command from 127.0.0.1#33546: bad auth Apr 10 20:10:52 srv1 named[4345]: invalid command from 127.0.0.1#33547: bad auth Where does this 'bad auth' come from? (I am running ldap but the user 'named' is in /etc/passwd & /etc/shadow Craig

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Issues with aacraid
by Karl Fischer 11 Apr '06

11 Apr '06

Hi there, I'm currently trying to install a server with Centos 4.3 x86_64. I have issues installing drivers from a Driver disk, I got a driver(2810SA) from the Adaptec site, I started it up with "linux dd" It reads the disk fine .... I can see the aacraid module in the list but as soon as I choose it. Then I get a screen saying "Do you wish to load more Driver Disks?" I can see in the logging that it can't find the driver it also gives a "Can't find a valid FAT filesystem on dev fd0". I have dd'ed the image ... it is a ext2 Filesystem and used RAWRITE. Is there more that I can try ? Any Suggestions ? Thanks Karl -- ----------------------------------------- Karl Fischer Drone, Human and Gnome User I support 10x10. Email : kmf(a)fischer.org.za Jabber : kmf(a)jabber.org Personal Site : http://fischer.org.za -----------------------------------------

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CentOS Wiki - Fight FUD?
by Mike Stankovic 11 Apr '06

11 Apr '06

In the up and coming wiki, don't forget to have an FAQ/Fight against FUD section. Looking at the web in January an upstream vendor employee said some things in his wiki. In Feb/March CentOS was discussed on the Fedora-list/Slashdot. - Common myths about the legality/ethicality of CentOS - CentOS providing value to Open Source as a whole - Projects emanating from CentOS like SMEServer __________________________________________________ Improve the mailing list by performing a simple search before posting and reading the faq/etiquette. Thank you!! __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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gtkmm-2.4 for Eiciel?
by Yanik Doucet 11 Apr '06

11 Apr '06

Hi everyone, I'd like a nice frontend to setfacl and getfacl. I'm getting lost with those ACL commands. I've found Eiciel which is a nice gnome frontend to setup ACLs. The problem is it need gtkmm-2.4, and centos seems to have gtkmm-2.0 only. Is there a safe way to upgrade? Do you have a repo to suggest? Or anyone knows of another graphical ACL editor with more conservative dependancies. Thanks Yanik

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