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Re: ralink rt61 in centos 5 [solved]
by Olaf Mueller 27 Apr '07

27 Apr '07

Hello, Maybe someone will run into the same problem, so here is how it works for me. I could not get work my wlan card (ralink rt61) with the driver from rt2x00.serialmonkey.com under CentOS 5 (2.6.18-8.1.1.el5). All drivers (beta and daily cvs) from this site freezes my system. So I get the driver from the Ralink support at http://www.ralinktech.com/ralink/Home/Support/Linux.html (RT2501PCI/mPCI/CB(RT2561/RT2661)). With this driver, my wlan card works very well (WPA2, AES). CentOS 5 is great. regards Olaf

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Xen guest and samba
by Rick Barnes 26 Apr '07

26 Apr '07

Hello, I am new to this list, but having been using CentOS for sometime. I recently installed CentOS 5 on a test server to check out Xen. The installation was smooth had so far I have everything working except I cannot get samba to join our AD domain from the xen guest, using para-virtualization, I setup. I am out of ideas, and cannot find anyone having similar problems. I have tested my config files on the server itself (Dom0) and it joins fine. But on the guest it will not join. kinit works and I do get a ticket from kerberos. But when I try to join I get: # net ads join -U administrator administrator's password: Using short domain name -- ICN Failed to set servicePrincipalNames. Please ensure that the DNS domain of this server matches the AD domain, Or rejoin with using Domain Admin credentials. Disabled account for 'XEN01' in realm 'ICN.LOCAL' In messages, I have: Apr 25 10:36:02 xen01 winbindd[29659]: [2007/04/25 10:36:02, 0] libads/kerberos.c:ads_kinit_password(208) Apr 25 10:36:02 xen01 winbindd[29659]: kerberos_kinit_password XEN01$(a)ICN.LOCAL failed: Clients credentials have been revoked Apr 25 10:36:34 xen01 pcscd: winscard.c:219:SCardConnect() Reader E-Gate 0 0 Not Found The hosts, resolv.conf, smb.conf and krb5.conf files are the same between the guest and Dom0 and are using the same version of samba. Selinux has been disabled in order to make sure it was not interfering. Has anyone had this issue or successfully able to join to a domain from a guest? Thanks, Rick

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CentOS 4.4 Xen Guest on CentOS 5 Host
by Graham Jenkins 26 Apr '07

26 Apr '07

Anybody done this yet? Is an appropriate Guest kernel available? -- Graham Jenkins +61 3 9925 4909 Victorian Partnership for Advanced Computing http://www.vpac.org/ PO Box 201, Carlton South, Vic. 3053, Australia

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linux dd on CentOS 5 x86
by Drew Weaver 26 Apr '07

26 Apr '07

Howdy, I had to use a driver disk today to install CentOS 5 on a Poweredge 1900 /w a 3ware 9650SE controller card. The only gotcha I noticed is that for some reason CentOS 5 will not read driver disk files off of a thumbdrive (usb key) when it is being emulated as auto, hard disk, or floppy disk. (it saw the thumb drive as SDA in all instances) however when I plugged in a USB floppy drive (the poweredge 1900 is sans floppy controller) it still saw the drive as SDA and it read the files off of the USB floppy disk. My question, I suppose is what is the difference between a floppy emulated SDA and a USB floppy SDA? Thanks, -Drew

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Raid 1 newbie question
by Roberto Pereyra 26 Apr '07

26 Apr '07

Hi I have a Raid 1 centos 4.4 setup and now have this /proc/mdstat output: [root@server admin]# cat /proc/mdstat Personalities : [raid1] md2 : active raid1 hdc2[1] hda2[0] 1052160 blocks [2/2] [UU] md1 : active raid1 hda3[0] 77023552 blocks [2/1] [U_] md0 : active raid1 hdc1[1] hda1[0] 104320 blocks [2/2] [UU] What happens with md1 ? My dmesg output is: [root@server admin]# dmesg | grep md1 Kernel command line: ro root=/dev/md1 rhgb quiet md: created md1 raid1: raid set md1 active with 1 out of 2 mirrors md: md1 already running, cannot run hdc3 md: md1 already running, cannot run hdc3 EXT3-fs: md1: orphan cleanup on readonly fs EXT3-fs: md1: 4 orphan inodes deleted md: md1 already running, cannot run hdc3 EXT3 FS on md1, internal journal [root@server admin]# Thanks for any help !!! roberto -- Ing. Roberto Pereyra ContenidosOnline http://www.contenidosonline.com.ar

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Problem installing Windows under Xen CentOS 5
by Radu Radutiu 26 Apr '07

26 Apr '07

Hi, I'm having trouble installing Windows on a fully virtualized VM on CentOS 5. The installation hangs on the blue screen saying "Setup is starting Windows". The hardware is a dual processor dual core AMD Opteron 2218 with 8GB RAM and SATA disks, CentoOS 5 i386 will all patches applied. On the same machine I have successfully installed two VM's running CentOS 5, one paravirtualized and one with full virtualization. I have tried to install Windows 2003 server and Windows XP with the same result. The installation media are iso images of the Windows MSDN DVDs. When the installation hangs at the "Setup is starting Windows" screen the virt-manager shows 25% cpu utilization for the guest ( I think this represents 100% CPU usage for the guest as it has 1 vcpu assigned out the maximum 4 vcpus). I am running the virt-manager and the virtual machine console over ssh as dom0 has no X server installed. Has anyone seen this problem? Any suggestions? Regards, Radu

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Re: [CentOS] Re: [CSL #329283] centosplus XFS bug?
by David Thompson 26 Apr '07

26 Apr '07

Johnny Hughes wrote: > >Dave, > >I would guess that this is not in there ... but I will double check and >see if we can get it rolled in. > >I should be in the CentOS-5 module though. It's going to be awhile before we'll be ready to upgrade that host to CentOS 5, so I'm looking at either getting a different xfs module for c4 or switching the partition back to ext3. So that I understand what I'm installing for c5, will the CentOS 5 xfs module for the mainline ("compatible with upstream") kernels be based on the in-kernel source, or will it be a replacement module (as in CentOS 4)? How about the centosplus kernels? Thanks again, Dave

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Re: [CentOS] Re: [CSL #329283] centosplus XFS bug?
by David Thompson 26 Apr '07

26 Apr '07

Peter Kjellstrom wrote: > >This implies that you are running i386 and not x86_64. It has been my=20 >experience that xfs is less that solid on c4.i386 but fine on c4.x86_64. Th= >is=20 >is most likely due to the fact that i386 uses 4k kernel stack while x86_64= >=20 >uses 8k. Yes, that's correct. Going to x86_64 may be a possibility for future hardware incarnations of the host. Dave

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Error trying to mount NFS volume from kickstart in CentOS 5
by Alfred von Campe 26 Apr '07

26 Apr '07

The post section of the kickstart configuration file I have been using in CentOS4 looks like this: %post mount centosmirror:/var/www/html/ks /mnt /mnt/ks/post/post.sh > /root/post_install.log 2>&1 umount /mnt I tried to do my first CentOS 5 kickstart installation today using an identical post section, but the post install script did not run. After instrumenting the kickstart a bit, I found that the above mount command failed with the following error message: mount.nfs: Input/output error Not a very helpful error message -- any clues as to what is going on? It's a little tricky and time consuming to debug kickstart problems like these, so I thought I'd ask the list and hopefully save some time. If I execute that mount command after rebooting the system, it works just fine. Thanks, Alfred

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Re: [CSL #329283] centosplus XFS bug?
by thomas＠cs.wisc.edu 26 Apr '07

26 Apr '07

We're running a mix of ext3 and xfs file systems on CentOS 4 workstations at our site. We have benefitted greatly from the increased performance and fast (crash recovery) reboot times that we get from xfs. We're currently running CentOS kernel 2.6.9-42.0.8.EL and xfs version 0.2-1. We have one host where we've got issues. It's a (very) busy imap server with external scsi hardware raid, dual Xeon CPUs, and 8GB of RAM (it runs the hugemem kernel). Twice now in the last few weeks we've seen it hang with the follow log message repeated many times in the logs at the time of the hang: XFS: possible memory allocation deadlock in kmem_alloc (mode:0x250) I see this error discussed in: http://oss.sgi.com/bugzilla/show_bug.cgi?id=410 ...and I'm wondering if the fixes mentioned in that bug are present in the 0.2-1 centosplus xfs drivers, or if it could get included in an xfs update for CentOS 4. Can anyone comment? Thanks for the filesystem, and the OS, it all rocks, and have a great day. Dave Thompson UW-Madison

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