CentOS 5 Server :: Updated Fresh 5.3 Xen Kernel And PAE Support Disappeared?
Aug 26, 2009
I have installed CentOS 5.3 with Xen on a PowerEdge 2650 machine with 6GB of RAM. As usual, PAE was already enabled so I did not have any problem with utilising all of the memory. However after upgrading to the latest release of the kernel (2.6.18-128.7.1.el5xen), memory available decreased to 4GBs. Then I switched back to the old kernel and 6GB was there. Then finally have switched back to the new kernel and 6GB is again there. So now PAE seems to be enabled but what concerns me is the inconsistent behaviour. (Also I am not sure the reason was the upgraded kernel.)
I just updated my Squeeze install now the current kernel version is now 3.0.0-1-686-pae. I now no longer have any internet connection.I have tried the failsafe boots with no luck. I have tried the 2.6 kernels and have had no luck.I have tried to manually start the connections with no luck.I have booted off of a Squeeze Live CD and the connection works just fine.
The first server I installed installed fine. The second server, installed with the same config, went to "kernel panic not syncing no init found try passing init= option in kernel" error. I tried reinstalling but it keeps going to that error after install reboot. The storage is ISCSI connected via Intel Server Adapter, which allows it to boot from ISCSI. Not sure if that's the cause for the problem, but the first server is connected to the same ISCSI and installed just fine.
Is there a way that I can make sure ISCSI module installs during installation? Although I think it is installed since it's able to copy the files and setup /dev/sda. I just wana make sure that it installs during setup.
I'm trying to find out when QME2572 (Qlogic) card became support by the kernel. We have a RHEL 5.1 system that is moving to new hardware, however the kernel at this release doesn't support the new hardware, due to the Qlogic card change. I tired the Redhat KB and Bugzilla. Is there a Kernel change list etc I can search. Never really played around with the kernel too much so I'm just after some pointers for looking up this information. Offically its not supported until Redhat 5.3, I'm trying trying to research kernel info so I can tell the customer they have to upgrade.
I installed CentOS 5.5 and after the install when the system reboot, it give me a kernel panic error saying that it don't find the drive /dev/sdb4. I didn't install Grub since Ubuntu is already present on the first drive. I let Grub2 OS prober install it in Grub menu. Here is the grub line:
menuentry "CentOS release 5.5 (Final) (on /dev/sdb4)" { insmod ext2 set root='(hd1,4)'
I'm setting up a raid 5 on several hard disks with a layer of lvm on top for good measure.I know the recent kernels support growing software raid, but since centos runs 2.6.18, I wanted to make sure it'll work. Does the centos kernel support growing raid devices?
When I run yum list installed command the output shows two kernels:
[Code].....
Would it therefore be safe to remove the first kernel in the installed list to save having two kernels being updated everytime I run yum update? Or is the PAE kernel dependant upon the original?
I did an weekly update through aptitude, and it asked for a restart.after the restart, there was no ethernet available. ifconfig brought absolutely nothing, as though the card was no longer present This is on an old dell tower. How do I find out what happened. I don't know how to find out what was in the update.
I have somewhere between 8 and 12 servers, spread amongst different webhosts, all running CentOS 5.3. Everything on the servers has been compiled from source: > EngineX, PHP, MySQL, Munin, etc
I compile from source because I usually run ./configure to modify the source before installing. What would be the easiest way to keep the server software updated? I am considering creating custom packages from a server which I would keep up to date manually. Then use Capistrano or Puppet to install those packages on all of my servers.
I am running a dell poweredge 2600 in which i just now did a fresh install of Centos 5.5 KDE. The install went perfectly with no hiccups or errors. I reboot the server and centos dose its normal checking everything and giving a Green"OK" or Red"Error" and everything seems to be fine. I then get to a black screen with a X mouse cursor, i can move the cursor freely and i can turn the Num Lock key on and off and i can do a Ctrl+Alt+F5 and then reboot with a Ctrl+Alt+Del smoothly, but i just cant get the centos to boot up all the way into the GUI.
This is just to report that I've got 3D support successfully enabled on my Mobility Radeon HD3200 chip with the open source driver on openSUSE 11.2. I did this to replace the proprietary fglrx driver that has already been installed for quite some time on my system.
Uninstalled fglrx, and here we go... Basically what I did was to get the latest X.Org server (1.8) and Mesa from Index of /repositories/X11:/XOrg/openSUSE_11.2 I changed all the corresponding system packages to the versions in that repository. I noticed that I cannot get any 3D support when pairing the last X server with the updated openSUSE 11.2 kernel (2.6.31.12_0.2). With RadeonHD driver it gives me no acceleration at all (No DRI), perhaps it is still intentionally disabled to prevent lockups in r600 cards. With Radeon KDE wouldn't start.
So to get usable driver support I have to update the stock kernel to the one in Index of /repositories/Kernel:/HEAD/openSUSE_11.2 I installed the 2.6.34-rc5-22 kernel and reboot. Immediately I notice that KMS is working, but I could not get DRI to work, presumably caused by the drm being unable to locate two related firmware files (it is there in the kernel, just doesn't know why it is not being loaded). Other than that I do not know why I can't get any acceleration with KMS on. To workaround I passed the 'nomodeset' parameter to the kernel to run in UMS mode instead, and voila! with UMS 2D + 3D accelerations are working. I can enable kwin effects just fine.
Since this is a laptop I need suspend & resume and power management working. Good news is s2ram works perfectly with extra parameter. And all the new Radeon power management options: DynamicPM, ClockGating and ForceLowPowerMode can be enabled just fine! (For UMS you need to generate a xorg.conf and put those options in)Performance is good. So far it's faster than fglrx in some areas and slower in some other area. Now this is truly amazing!
This is a Toshiba Satellite L640 and has a Broadcom BCM4313 controller and Bios version 1.9 and I'm posting by booting my Ubuntu 11.04 cd in "trial" mode which rules out hardware cause for trouble.My 11.04 install is brand new today and wireless was working perfectly immediately after install. Since then, I've shut it down and when I rebooted it I haven't been able to find any wireless connections.
I've installed the updates that were suggested after the install and also activated the two proprietary drivers that th system suggested - this might include the proprietary Broadcom wireless driver, that's the only proprietary driver suggested in the current "trial" mode and I remember there being the graphic driver and one other.I wondered if the wireless was turned off so I tried to turn it on or get it up. I typed ifup wlan0 but it said wlan0 was not configured. In production mode, when I click the wireless icon: it says wireless is enabled and offers me the option of connecting to a hidden network or setting up a new connection, but it can't see any connections even when my phone has seen the connection and automatically signed in. It can't see my home WPA2 connection or my completely open work connection.
Yesterday I installed a new server with a large partition for my XEN images. This partition is a about 930GB. The installation tooks ages and after he finished I was finding out why that is. The SoftRAID1 I configured is rebuilding the large partition.
I have a dvr card that is a Softlogic 6x10 line of MPEG-4 codec card that uses mpeg 4. This is the driver that they recommend that I use but it is for ubuntu. Is there a Centos 5.5 equivalent? [URL]. This is the card: [URL].
This is what appears in lspci: PHP Code: 03:06.0 Multimedia video controller: Unknown device 9413:6010
I found this on the net: [URL] and installed PHP Code: kmod-video4linux-PAE-0.0-7.20100410.2.el5.elrepo.i686.rpmkernel-ml-PAE-2.6.37-0.3.el5.elrepo.i686.rpm
I get this error when I run a modprobe budget_av: PHP Code: modprobe budget_avWARNING: Error inserting videobuf_dma_sg (/lib/modules/2.6.18-194.32.1.el5PAE/weak-updates/video4linux/videobuf-dma-sg.ko): Unknown symbol in module, or unknown parameter (see dmesg)WARNING: Error inserting v4l1_compat (/lib/modules/2.6.18-194.32.1.el5PAE/weak-updates/video4linux/v4l1-compat.ko): Unknown symbol in module, or unknown parameter (see dmesg)WARNING: Error inserting videodev (/lib/modules/2.6.18-194.32.1.el5PAE/weak-updates/video4linux/videodev.ko): Unknown symbol in module, or unknown parameter (see dmesg)WARNING: Error inserting saa7146_vv (/lib/modules/2.6.18-194.32.1.el5PAE/weak-updates/video4linux/saa7146_vv.ko): Unknown symbol in module, or unknown parameter (see dmesg)FATAL: Error inserting budget_av (/lib/modules/2.6.18-194.32.1.el5PAE/weak-updates/video4linux/budget-av.ko): Unknown symbol in module, or unknown parameter (see dmesg)
I have to deploy Linux server(apache, php , Mysql) for production environment. whether I should go for RHEL5 or CENTOS5 and why.... Also if RHEL5 then Can use RHEL5 without license if I dont want support from Red Hat.
We have CentOS 5.3 and are using sendmail for outbound emails. We are trying to switch over to authsmtp service. Authsmtp requires sendmail built with SASL suport.
How do I find out if my sendmail has been built with SASL support? If it is not, is it easy to build it with SASL support?
I'm trying to setup postgresql84 with uuid support, everywhere says that postgresql84-contrib should do the trick but it does not. I even generated the uuid-postgres and uuid rpms from source for uuid-1.6.1 and no luck with the uuid support.
i have recently bought a system which has intel atom and my Lan card hasn't been installed on the system, i am using centos 5.2, i have read in some articles that Centos 5.4 directly support this LAN Card,so will upgrading the kernel for the Operating system help, or i have to download the whole iso for 5.4 and install it over the existing if upgrading the kernel will help which file i need to download to upgrade the kernel and where can i download that file.
I built a home server (NAS/WWW/SSH/media server etc) and chose CentOS 5 as the OS (stability, easy of configuration).I was just about to start tuning the power consumption when I realised that the kernel CentOS uses is so "old" that it does not support the latest reduced power consumption enhancements that Linux has achieved in big strides in the recent past (we are probably still talking 6-12+ months ago e.g. tickless kernel)..
So my questions; 1) I know CentOS was maybe not meant for home servers (certainly its not its primary purpose), but if it is, any ideas of what kind of power consumption it takes (I know its relative) and if there are particular power consumptions that are worthwhile?
2) Do you recommend me compiling my own 2.6.21+ kernel from kernel.org or am I just likely to have compatibility issues (I really did not want to do that) or when is CentOS 5.4 supposed to have a newer 2.6.21+ version kernel?
Was it wrong of me in principle to choose CentOS for a home server when I am power conscious? (I don't have a low-power VIA processor either but a P4 so I am really just hoping to make do with software changes).
I have centos 5.3 workin on mini itx atom 330. i have some problem with the network when i use Samba. when i move big files the network goes down. i wanna to install the new kernel on my centos to try to fix the network problem with the new drivers includes on the new kernel.
I have not been using my lenny 2.6.26-2-amd64 for about a month or more.I booted it today, and there were over 30 updates available, inculding some kernel header updates I installed all these updates and rebooted.Well, there are 2 new entries to grub menu:Linux 2.6.32-bpo-3-amd64Linux 2.6.32-bpo-2-amd64 (single user or recovery)in addition to my old kernels.So, I chose the bpo-3 entry, but it just sits there.I have to chose the kernel before the update. Is there something wrong with the update? dit: I just found out that synaptic manager does not show 2.6.32-bpo-3-amd64 at all as being installed.In fact, it is not in the header list nor the image list.
I recently updated the kernel of lucid from 2.6.32-22 to the ""-23 release through update manager. Now whenever i try to boot the new kernel from GRUB the screen goes black and the computer stops responding with the caps lock and scroll lock lights flashing on the keyboard.
I can still boot into ""-22 fine and keep using ubuntu.
My first thought that the problem was the newer kernel itself so I tried to update to 2.6.33-5 from [url]but the same boot problem exists within this one also.
Because it goes straight into the black screen after GRUB I have no way of telling what has happened without error messages. Would this appear in any log files and if so which ones?
I recently upgraded Linux kernel headers for version 2.6.35 on x86/x86_64 from 2.6.35-22 to 2.6.35-23. and my system will not reboot to the upgraded kernel. To reboot I have to force shutdown my Toshiba L-450 laptop and the restart. This brings me to the GRUB screen were I can choose to use the previous 2.6.35-22. Normally do not see the GRUB screen as I am only running Ubuntu 10.10 64 bit on this computer. I have tried reinstalling linux-headers-2.6.35-23 and linux-headers-2.6.35-23-generic and got the same result.
