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vncserver on IPv6
by Robert Moskowitz 14 Aug '08

14 Aug '08

http://www.realvnc.com/products/enterprise/4.1/ipv6.html IPv6 support in VNC Server E4.1.7/P4.1.2 VNC Server E4.1.7 & P4.1.2 are fully IPv6-aware, but is shipped with IPv6 support disabled by default, for security reasons. IPv6 can be enabled by setting "InTransports=IPv6,IPv4" (the default being IPv4 only), either on the command-line when starting vncserver under Unix Ok. we have vnc-server-4.1.2-9.el5.i386.rpm, so it SHOULD support IPv6. Don't know how to add a setting to the command-line, as I rund VNCserver via the service command, but I added it to /etc/sysconfig/vncservers: InTransports="IPv6" (note I also tried without the quotes) and netstat -na|grep 5902 shows vncserver only running on IPv4 and I can only connect to it via IPv4. So what am I missing?????

2 6

udev rules for /dev/sd[a-z] ?
by James Pearson 13 Aug '08

13 Aug '08

I have a third party application that I want to run a CentOS4 box that is expecting to access the generic SCSI devices through /dev/sga, /dev/sgb, etc. However, the devices set up by udev are /dev/sg0, /dev/sg1 etc. Does anyone know what syntax I could use to create a udev rule that creates symlinks sga -> sg0 etc. for each sg[0-N] device? Thanks James Pearson

2 2

support libipq?
by Mike -- EMAIL IGNORED 13 Aug '08

13 Aug '08

I am thinking of trying centos (I am now using Fedora). Does centos support libipq? Thanks, Mike.

2 1

Re: Boot from degraded sw RAID 1 SOLVED
by Eduardo Grosclaude 13 Aug '08

13 Aug '08

On Wed, Aug 13, 2008 at 3:07 PM, Eduardo Grosclaude <eduardo.grosclaude(a)gmail.com> wrote: > OK, this is probably long, and your answer will surely make me slap my > forehead really hard... please help me understand what goes on. <autoslap>Ouch!</autoslap> Sure /boot/grub/grub.conf still needs editing... That's why you really, really WANT both partition tables to be identical... -- Eduardo Grosclaude Universidad Nacional del Comahue Neuquen, Argentina

1 0

rtc in /proc/interrupts
by Jerry Geis 13 Aug '08

13 Aug '08

Hi - I am using centos 4.6 on an ebox 4300. Everything seems to be working except the /proc/interrupts rtc is always constant. On other machines the rtc (which ztdummy from asterisk) is always incrementing. the uhci_hcd and ehci_hcd are both running. What can cause this? Jerry -------------- 0: 274276 IO-APIC-edge timer 1: 9 IO-APIC-edge i8042 2: 0 XT-PIC cascade 8: 2 IO-APIC-edge rtc 145: 5522 IO-APIC-level eth0 153: 10279 IO-APIC-level HDA Intel 161: 0 IO-APIC-level uhci_hcd 169: 0 IO-APIC-level uhci_hcd 177: 17491 IO-APIC-level ehci_hcd NMI: 0 LOC: 274158 ERR: 0 MIS: 0 lspci shows lspci 00:00.0 Host bridge: VIA Technologies, Inc. CX700 Host Bridge (rev 10) 00:00.1 Host bridge: VIA Technologies, Inc. CX700 Host Bridge 00:00.2 Host bridge: VIA Technologies, Inc. CX700 Host Bridge 00:00.3 Host bridge: VIA Technologies, Inc. CX700 Host Bridge 00:00.4 Host bridge: VIA Technologies, Inc. CX700 Host Bridge 00:00.7 Host bridge: VIA Technologies, Inc. CX700 Host Bridge 00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI Bridge 00:08.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) 00:0f.0 IDE interface: VIA Technologies, Inc. CX700M2 IDE 00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 90) 00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 90) 00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 90) 00:11.0 ISA bridge: VIA Technologies, Inc. CX700 PCI to ISA Bridge 00:11.7 Host bridge: VIA Technologies, Inc. CX700 Internal Module Bus 00:13.0 PCI bridge: VIA Technologies, Inc. CX700 Host Bridge 01:00.0 VGA compatible controller: VIA Technologies, Inc. CX700M2 UniChrome PRO II Graphics (rev 03) 02:01.0 Audio device: VIA Technologies, Inc. VIA High Definition Audio Controller (rev 10) lsmod shows lsmod Module Size Used by md5 4161 1 ipv6 236929 10 autofs4 30405 0 sunrpc 163237 1 ztdummy 4180 0 zaptel 203268 3 ztdummy crc_ccitt 2241 1 zaptel ipt_REJECT 6721 1 ipt_state 1985 26 ip_conntrack 41077 1 ipt_state iptable_filter 3009 1 ip_tables 17601 3 ipt_REJECT,ipt_state,iptable_filter dm_mirror 31045 0 dm_mod 67577 1 dm_mirror uhci_hcd 31705 0 snd_hda_intel 347644 4 snd_pcm_oss 44456 0 snd_mixer_oss 19072 1 snd_pcm_oss snd_pcm 82824 4 snd_hda_intel,snd_pcm_oss snd_timer 30724 3 snd_pcm snd_page_alloc 11528 2 snd_hda_intel,snd_pcm snd_hwdep 10884 1 snd_hda_intel snd 70276 10 snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer,snd_hwdep soundcore 10017 1 snd 8139too 26177 0 mii 5313 1 8139too ehci_hcd 31429 0 usb_storage 60937 2 ext3 118217 1 jbd 72665 1 ext3 ata_piix 15173 0 libata 111645 1 ata_piix sd_mod 17345 3 scsi_mod 125901 3 usb_storage,libata,sd_mod

1 0

xen and nvidia
by sbeam 13 Aug '08

13 Aug '08

has anyone had any luck getting nvidia to work with the latest xen kernel under x86_64? I found an unsupported method involving IGNORE_XEN_PRESENCE [1], but it doesn't work for me. Everything google turns up seems to be a year old. prob nothing has changed but I just wonder. [1] http://www.nvnews.net/vbulletin/archive/index.php/t-95483.html maybe I could I run a xen dom0 under vmware? nah...

3 2

DRBD 8.2 crashes CentOS 5.2 on rsync from remote host
by Chris Miller 13 Aug '08

13 Aug '08

I've got a pair of HA servers I'm trying to get into production. Here are some specs : Xeon X3210 Quad Core (aka Core 2 Quad) 2.13Ghz (four logical processors, no Hyper Threading) 4GB memory Hardware (3ware) Raid 1 mirror, 2 x Seagate 750GB SATA2 650GB DRBD partition run on top of an LVM2 partition. CentOS 5.2 2.6.18-92.1.6.el5.centos.plus DRBD 8.2 (drbd82-8.2.6-1.el5.centos) Kernel Module kmod-drbd82-8.2.6-1.2.6.18_92.1.6.el5.centos.plus I've been trying to rsync data from a remote server and it's crashed a couple of times now. It does not happen immediately, but over time. I connected a serial console and got the below panic message. The last file copied was ~1GB in size, but previous files up to 4GB had been copied. I do not have kernel core dumping enabled, but that's a possibility if needed. Not sure if this is a bug or is caused by something I've done. This isn't my first DRBD install (although first on top of LVM) and I believe I've gotten everything setup correctly. I did have a full sync rate (110M) enabled over Gbe, if that's relevant. Thoughts? Regards, Chris [root@haws2 ~]# pvscan PV /dev/sda2 VG VolGroup00 lvm2 [698.28 GB / 0 free] Total: 1 [698.28 GB] / in use: 1 [698.28 GB] / in no VG: 0 [0 ] [root@haws2 ~]# lvscan ACTIVE '/dev/VolGroup00/LogVol00' [39.06 GB] inherit ACTIVE '/dev/VolGroup00/LogVol02' [658.72 GB] inherit ACTIVE '/dev/VolGroup00/LogVol01' [512.00 MB] inherit [root@haws2 ~]# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/mapper/VolGroup00-LogVol00 39676508 1938880 35689628 6% / /dev/sda1 194442 23650 160753 13% /boot tmpfs 1684156 0 1684156 0% /dev/shm /dev/drbd0 679824572 113321224 531970212 18% /home [root@haws1 ~]# BUG: unable to handle kernel paging request at virtual address c printing eip: c04e9291 *pde = 00000000 Oops: 0000 [#1] SMP last sysfs file: /devices/pci0000:00/0000:00:00.0/irq Modules linked in: softdog drbd(U) autofs4 hidp rfcomm l2cap bluetooth sunrpc id CPU: 0 EIP: 0060:[<c04e9291>] Tainted: G VLI EFLAGS: 00010046 (2.6.18-92.1.6.el5.centos.plus #1) EIP is at list_del+0x25/0x5c eax: fe187128 ebx: f04a6ab8 ecx: f04a6a8c edx: f04a6a8c esi: fe187128 edi: f4e355a0 ebp: f426c800 esp: f385df3c ds: 007b es: 007b ss: 0068 Process drbd0_asender (pid: 2900, ti=f385d000 task=f4932000 task.ti=f385d000) Stack: 000000e6 f8d1953b 00000000 f04a6a8c 000000e6 00000001 ee187b14 00000046 f49e7bc0 f04a6ab8 f04a6a8c f426c800 fe187128 f4e355a0 0000349f f8d24805 00000800 f426c800 f426c800 00000008 f426c9f4 f8d14d47 f385dfbc f8d15fbc Call Trace: [<f8d1953b>] _req_may_be_done+0x4ea/0x710 [drbd] [<f8d24805>] tl_release+0x35/0x172 [drbd] [<f8d14d47>] got_BarrierAck+0x10/0x6b [drbd] [<f8d15fbc>] drbd_asender+0x3b1/0x4e7 [drbd] [<f8d24a53>] drbd_thread_setup+0x0/0x14e [drbd] [<f8d24adb>] drbd_thread_setup+0x88/0x14e [drbd] [<f8d24a53>] drbd_thread_setup+0x0/0x14e [drbd] [<c0405c3b>] kernel_thread_helper+0x7/0x10 ======================= Code: 89 c3 eb eb 90 90 53 89 c3 8b 40 04 8b 00 39 d8 74 17 50 53 68 9b 9a 63 c EIP: [<c04e9291>] list_del+0x25/0x5c SS:ESP 0068:f385df3c <0>Kernel panic - not syncing: Fatal exception BUG: warning at arch/i386/kernel/smp.c:550/smp_call_function() (Tainted: G ) [<c0417ae0>] stop_this_cpu+0x0/0x33 [<c04178cf>] smp_call_function+0x57/0xc3 [<c0426682>] printk+0x18/0x8e [<c041794e>] smp_send_stop+0x13/0x1c [<c0425c53>] panic+0x4c/0x16d [<c04064dd>] die+0x25d/0x291 [<c060c48b>] do_page_fault+0x3ea/0x4b8 [<c060c0a1>] do_page_fault+0x0/0x4b8 [<c0405a71>] error_code+0x39/0x40 [<c04e9291>] list_del+0x25/0x5c [<f8d1953b>] _req_may_be_done+0x4ea/0x710 [drbd] [<f8d24805>] tl_release+0x35/0x172 [drbd] [<f8d14d47>] got_BarrierAck+0x10/0x6b [drbd] [<f8d15fbc>] drbd_asender+0x3b1/0x4e7 [drbd] [<f8d24a53>] drbd_thread_setup+0x0/0x14e [drbd] [<f8d24adb>] drbd_thread_setup+0x88/0x14e [drbd] [<f8d24a53>] drbd_thread_setup+0x0/0x14e [drbd] [<c0405c3b>] kernel_thread_helper+0x7/0x10 =======================

4 4

Re: NetBSD on CentOS 5.2 Xen 3
by Tom Diehl 13 Aug '08

13 Aug '08

On Wed, 13 Aug 2008, white list wrote: > hi all good people, > can someone direct me to a solution i get the following error > > # xm create -c vm03 > Using config file "./vm03". > Error: (2, 'Invalid kernel', 'xc_dom_compat_check: guest type xen-3.0-x86_32 > not supported by xen kernel, sorry\n') Have you actually tried to solve this problem yourself? I know nothing about your problem but http://mail-index.netbsd.org/port-xen/2008/01/29/msg003223.html sounds a lot like what you describe. Hint, if you put, "Error: (2, 'Invalid kernel', 'xc_dom_compat_check: guest type xen-3.0-x86_32" in google you might just get the info you need. Do not forget to include the quotes in your google search. Hope this helps. Regards, -- Tom Diehl tdiehl(a)rogueind.com Spamtrap address mtd123(a)rogueind.com

1 0

ks
by tony.chamberlain＠lemko.com 13 Aug '08

13 Aug '08

I made a file partition-ks.cfg and put it in our machine 192.168.5.17 under /var/www/html. When I install a new machine I just do a linux ks=http://192.168.5.17/partition-ks.cfg I have a couple questions though: 1) I have the following in it: clearpart --all part /boot --fstype ext3 --size=100 part /var --fstype ext3 --size=10000 part / --fstype ext3 --size=10000 part swap --size=2048 part /home --fstype ext3 --size=100 --grow which is OK if I am installing over a previous installation. But for new machines it does not seem to recognize the "clearpart" or it is not enough because I am still prompted whether I want to remove partitions. Should I be using something else? 2) I would like to duplicate the CentOS installation disk and place partition-ks.cfg on the disk too so that during boot it automatically is used (or barring that I can still say ks=<dvd drive>/partition-ks.cfg. Automatically would be better. I tried some ways I thought it said to do that but it did not work. Any tips?

4 3

gcc editor for newbie (Emacs or vim or ?)
by Lanny Marcus 13 Aug '08

13 Aug '08

I downloaded the .pdf version of "Thinking in C++" and I've begun to read that and I did yum groupinstall 'Development Tools' I'm a Newbie Desktop user, jumping into the deep end of the pool. Should I try to learn vi (Vim) (which obviously will help me, if I ever need to administer a remote box) or install Emacs or something else, for the gcc editor? An easy learning curve is strongly preferred, but, I am 100% aware of the advantages of vi. Recommendations? TIA!

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