Discuss July 2011

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315 participants
287 discussions

Re: [CentOS] centos6 not using /etc/gdm/custom.conf
by Gerhard Schneider 23 Jul '11

23 Jul '11

> In later Fedora releases, GDM has become less and less functional: > configurability has been removed, more so as releases occur. From my > (known to be flaky) memory, that includes the ability to turn off the > silly list that exposes usernames right on the login screen, the > ability to assign your own wallpaper to the login screen, among other > things. Using gdm is getting harder and harder but you can try: gconftool-2 --direct \ --config-source xml:readwrite:/etc/gconf/gconf.xml.defaults \ --type bool --set /apps/gdm/simple-greeter/disable_user_list true There are many features available via gconftool-2 or gconf-editor only. GS -- Gerhard Schneider Institute of Lightweight Design and e-Mail: gs(a)ilsb.tuwien.ac.at Structural Biomechanics (E317) Tel.: +43 664 60 588 3171 Vienna University of Technology / Austria Fax: +43 1 58801 31799 A-1040 Wien, Gusshausstrasse 27-29 http://www.ilsb.tuwien.ac.at/~gs/

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Re: [CentOS] centos6 not using /etc/gdm/custom.conf
by Jamieson, Stephen CTR Navair, 5.4.4.4 23 Jul '11

23 Jul '11

> Those options are no longer supported in GDM. I think that they were > removed with GDM 2.24 (at the latest, probably 2.22) and C6 is running > GDM 2.30. That is unfortunate... I suppose I will just have to ignore this issue then. > in "/etc/gdm/custom.conf" to override the "-nolisten tcp" but I have > no idea about "-br -audit 4 -s 15". Thanks for your help. I really wish someone know where I could edit those parameters. Regards, Stephen Jamieson

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nouveau driver one centos 6
by Jerry Geis 23 Jul '11

23 Jul '11

I "wish" to not load the or even install the nouveau driver by default. I want to use the NVIDIA binary driver. I have tried a number of things: 1) in my kickstart package section add the line: -xorg-x11-drv-nouveau This did not work - it was still installed. 2) use the nvidia installer and it asks to create a modprobe.conf file to blacklist the driver. I said yes thats what I want. I verified the file being present and rebooted. The driver is still loaded "lsmod | grep nou" still showed it present. 3) I tried "rpm -e xorg-x11-drv-nouveau --nodeps". This seeming worked however the files for nouveau were still present. find / | grep nouveau showed driver files and more.... So - anyone know how to get this off of my machine??? I thought the "-" in the kickstart package section would work, but no. Thanks so much for any thoughts. jerry

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CentOS 6.0 chkconfig strange behavior
by Jerry Moore 22 Jul '11

22 Jul '11

Hi, I'm noticing some strangeness with chkconfig on CentOS 6.0 and was looking for a bit of advice. It appears that chkconfig is re sequencing or re ordering the start priority of various services when turning on a service using chkconfig. Example is the network service. Under normal circumstances network is set to start at S10. However when I add something like snmpd and invoke chkconfig snmpd on it will change network to S81. Which fouls up some of my other services that look for config files on NFS shares. Testing this issue with the snmpd service I removed $network from Required-Start which did nothing. The only solution I've found is to remove the entire BEGIN INIT INFO to END INIT INFO section. Once that is removed it no longer changes the network startup priority when enabling the snmpd service. Seems to me that you'd want network started before snmpd. So why chkconfig wants to re arrange it to start after snmpd which defaults to S50 is beyond me. So why would it do that? Did I miss some documentation or something? :-) Thanks in advance for any assistance! --Jerry

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ext4 in CentOS 5.6?
by PJ 22 Jul '11

22 Jul '11

I'm sure many are running ext4 FS's in production, but just want to be re-assured that there are not currently any major issues before starting a new project that looks like it will be using ext4. I've previously been using xfs but the software for this project requires ext3/ext4. I'm always very cautious before jumping onto a new FS, (new in the sense it is officially supported now) Thanks in advance!

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Re: [CentOS] nouveau driver one centos 6
by CS 22 Jul '11

22 Jul '11

Hi, Jerry Try appending 'rdblacklist=nouveau' to the kernel line in grub.conf (and keep the blackist in modules.conf) - install CentOS and reboot as usual - preempt booting at the grub menu and append 'rdblacklist=nouveau 3' to the kernel line to disable nouveau and start up in init 3 - install the Nvidia binary driver. Optionally, do a yum upgrade, reboot back to init 3 and build the driver on the latest kernel - edit grub.conf and remove the '3' and reboot again Nouveau will now stop loading and use your nvidia driver cheers, - cal On 21/07/11 13:08, Jerry Geis wrote: > I "wish" to not load the or even install the nouveau driver by default. > I want to use the NVIDIA binary driver. > > I have tried a number of things: > > 1) in my kickstart package section add the line: > -xorg-x11-drv-nouveau > > This did not work - it was still installed. > > 2) use the nvidia installer and it asks to create a modprobe.conf file > to blacklist > the driver. I said yes thats what I want. I verified the file being > present and rebooted. > The driver is still loaded "lsmod | grep nou" still showed it present. > > 3) I tried "rpm -e xorg-x11-drv-nouveau --nodeps". This seeming worked > however > the files for nouveau were still present. find / | grep nouveau showed > driver files and more.... > > So - anyone know how to get this off of my machine??? > I thought the "-" in the kickstart package section would work, but no. > > Thanks so much for any thoughts. > > jerry

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linux-3.0 packages for CentOS?
by Florin Andrei 22 Jul '11

22 Jul '11

Anyone packaging the new kernel for RH / CentOS? -- Florin Andrei http://florin.myip.org/

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Strange problem with LVM, device-mapper, and software RAID...
by Robert Heller 22 Jul '11

22 Jul '11

Running on a up-to-date CentOS 5.6 x86_64 machine: [heller@ravel ~]$ uname -a Linux ravel.60villagedrive 2.6.18-238.19.1.el5 #1 SMP Fri Jul 15 07:31:24 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux with a TYAN Computer Corp S4881 motherboard, which has a nVidia 4 channel SATA controller. It also has a Marvell Technology Group Ltd. 88SX7042 PCI-e 4-port SATA-II (rev 02). This machine has a 120G SATA system disk on the motherboard controller as the system disk: [heller@ravel ~]$ sudo /sbin/fdisk -l /dev/sda Disk /dev/sda: 120.0 GB, 120034123776 bytes 255 heads, 63 sectors/track, 14593 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 1 125 1004031 83 Linux /dev/sda2 126 14593 116214210 8e Linux LVM /dev/sda1 is /boot and /dev/sda2 is a LVM Volume group (named "RavelSystem") with two logical volumes (named "root" and "swap"), containing the root file system and a base 1G swap area. So far so good. On the Marvell controller are 4 1.5GB disks arranged as a RAID10 array: [heller@ravel ~]$ cat /proc/mdstat Personalities : [raid10] md1 : active raid10 sdg1[3] sdf1[2] sde1[1] sdd1[0] 2930270208 blocks 512K chunks 2 far-copies [4/4] [UUUU] unused devices: <none> [heller@ravel ~]$ sudo /sbin/mdadm --detail /dev/md1 /dev/md1: Version : 0.90 Creation Time : Tue Jun 21 19:04:19 2011 Raid Level : raid10 Array Size : 2930270208 (2794.52 GiB 3000.60 GB) Used Dev Size : 1465135616 (1397.26 GiB 1500.30 GB) Raid Devices : 4 Total Devices : 4 Preferred Minor : 1 Persistence : Superblock is persistent Update Time : Fri Jul 22 14:37:04 2011 State : clean Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0 Layout : far=2 Chunk Size : 512K UUID : 7a257206:a2b7c9d9:c5d004ae:2bdf6faf Events : 0.578 Number Major Minor RaidDevice State 0 8 49 0 active sync /dev/sdd1 1 8 65 1 active sync /dev/sde1 2 8 81 2 active sync /dev/sdf1 3 8 97 3 active sync /dev/sdg1 This RAID10 array has a second LVM Volume Group (named "RavelData2") on it, also with two logical volumes (named "data" and "largeswap"), a large data file system and a 16gig swap area. We are getting a strange message from device mapper on boot up: [heller@ravel ~]$ dmesg | grep device-mapper -A 5 -B 5 sdg: Write Protect is off sdg: Mode Sense: 00 3a 00 00 SCSI device sdg: drive cache: write back sdg: sdg1 sd 7:0:0:0: Attached scsi disk sdg device-mapper: uevent: version 1.0.3 device-mapper: ioctl: 4.11.5-ioctl (2007-12-12) initialised: dm-devel(a)redhat.com device-mapper: dm-raid45: initialized v0.2594l kjournald starting. Commit interval 5 seconds EXT3-fs: mounted filesystem with ordered data mode. SELinux: Disabled at runtime. SELinux: Unregistering netfilter hooks type=1404 audit(1311358429.773:2): selinux=0 auid=4294967295 ses=4294967295 -- md: bind<sdg1> md: running: <sdg1><sdf1><sde1><sdd1> md: raid10 personality registered for level 10 raid10: raid set md1 active with 4 out of 4 devices md: ... autorun DONE. device-mapper: multipath: version 1.0.6 loaded device-mapper: table: 253:6: linear: dm-linear: Device lookup failed device-mapper: ioctl: error adding target to table device-mapper: ioctl: device doesn't appear to be in the dev hash table. EXT3 FS on dm-5, internal journal kjournald starting. Commit interval 5 seconds EXT3 FS on sda1, internal journal EXT3-fs: mounted filesystem with ordered data mode. kjournald starting. Commit interval 180 seconds '253:6' happens to be the large swap space: [heller@ravel ~]$ dir -l /dev/mapper/ total 0 crw------- 1 root root 10, 63 Jul 22 14:13 control brw-rw---- 1 root disk 253, 2 Jul 22 14:13 nvidia_biaabdaf brw-rw---- 1 root disk 253, 3 Jul 22 14:13 nvidia_biaabdafp1 brw-rw---- 1 root disk 253, 0 Jul 22 14:13 nvidia_efjjfcad brw-rw---- 1 root disk 253, 1 Jul 22 14:13 nvidia_efjjfcadp1 brw-rw---- 1 root disk 253, 7 Jul 22 14:13 RavelData2-data brw-rw---- 1 root disk 253, 6 Jul 22 14:13 RavelData2-largeswap brw-rw---- 1 root disk 253, 5 Jul 22 14:13 RavelSystem-root brw-rw---- 1 root disk 253, 4 Jul 22 14:13 RavelSystem-swap The weirdness is this: 1) the large swap space is not being activated automatically on boot. It can be manually activated with the swapon command, and as a stopgap measure, I've added a swapon command to rc.local 2) vgscan, vgchange, and vgdisplay are not seeing RavelData2, *even though* the system has no problem mounting the data disk during boot and swapon has no problem activating the largeswap swap area (at least once the system is in full multi-user mode). And (appearently) the device mapper is perfectly happy to do its thing (more or less) with these logical volumes. [heller@ravel ~]$ sudo /sbin/vgscan -v --ignorelockingfailure --mknodes -d Wiping cache of LVM-capable devices Wiping internal VG cache Reading all physical volumes. This may take a while... Finding all volume groups Finding volume group "RavelSystem" Found volume group "RavelSystem" using metadata type lvm2 Finding all logical volumes [heller@ravel ~]$ sudo /sbin/vgchange -a y 2 logical volume(s) in volume group "RavelSystem" now active [heller@ravel ~]$ sudo /sbin/vgchange -a y RavelData2 Volume group "RavelData2" not found [heller@ravel ~]$ sudo /usr/sbin/vgdisplay RavelData2 Volume group "RavelData2" not found Does anyone have any guesses as to what is going on here? -- Robert Heller -- 978-544-6933 / heller(a)deepsoft.com Deepwoods Software -- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments

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package recommendation for video conferencing
by Geoff Galitz 22 Jul '11

22 Jul '11

Hi. We have a need for a video conferencing package with the following specs: - cross platform client support (Linux, Mac, Win) - server side runs on Centos 5 and later with easy package installation routine (e.g. RPM) - can host a teleconfernce with no users connected (IOW, it can wait for users to connect at any time) - supports mulitple users per video conference Recommendations? Thanks.

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kickstart ksdevice in centos6
by Jerry Geis 22 Jul '11

22 Jul '11

I have a line in my kickstart file (ksdevice) # Network information network --bootproto=dhcp --device=eth0 --onboot=on # Default network to boot ksdevice=eth0 # Auto reboot (to being next install faze) reboot However its still poping up and asking me eth0 or eth1 for install? Has this operation changed? Thanks, Jerry

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Discuss July 2011