CentOS 5 :: Do LVM Volumes Persist After CentOS 5 Re-install?
May 6, 2009
Quick question: Can anyone tell me if a logical volume will persist through a CentOS 5 re-install? I hosed my system, and am working to reinstall CentOS (once I work through another problem).When I re-install, I am planning on keeping the same partitions and structure, but hope to not lose the information on my logical volumes (not the LogVolGrp, a different Logical Volume I created). Anybody know if keeping this data intact through a re-install is realistic?
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Nov 6, 2009
I am trying to install Centos 5.3 x64_64 on old DELL server
PE 2850 with RAID 1 & 5 voluomes ON PERC 4/DC DUAL CHANNEL RAID CARD
Install can not see Raid Volumes
The server can still boot with the old OS RH EL 2x and RAID and Raid volumes are fine
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Feb 18, 2010
My centos host (running under VMware) is called localhost.localdomain I've tried to rename this is a myriad of ways:
* I've altered HOSTNAME variable in /etc/sysconfig/network
* I've created a file called /etc/hostname with the new name
* I've modified /etc/hosts
* I've written the new name to /proc/sys/kernel/hostname
* I've used sysctl -w kernel.hostname=NEWNAME
* I've run hostname NEWNAME
and yet after reboot the name remains localhost.localdomain
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Jan 6, 2011
I am trying to use e2label to label one of my Logical Volumes. the labeling is done successfully. but my findfs output is like this:
/dev/mapper/VolGroup00-TEST
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Sep 9, 2009
Does everybody do major upgrades in place on production servers?Am I over-engineering by creating a new logical volume, syncing my working root volume to it and upgrading the new volume to test services? Then, after a week or 2 or 4, removing the old LV...
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Sep 11, 2011
I inherited a 3ware 9550SX running a version of gentoo with a2.6.28.something kernel. I started over with CentOS 5.6 x86_64.tw_cli informs me that the 9-disk RAID 5 is healthy.The previous admin used lvm (?) to carve up the RAID into a zilliontiny pieces and one big piece. My main interest is the big piece.Some of the small pieces refused to mount until I installed theCentOS plus kernel (they are reiserfs).The remainder seem to be ext3; however, they are not mounted at boot("refusing activation"). lvs tells me they are not active. If I try tomake one active, for example:root> lvchange -ay vg01/usrI get:Refusing activation of partial LV usr. Use --partial to override.If I use --partial, I get:Partial mode. Incomplete logical volumes will be processed.and then I can then mount the partition, but not everything seems tobe there.
Some of the directory entries look like this:?--------- ? ? ? ? ? logfilesIs it possible that the versions of the kernel and lvm that wereon the gentoo system are causing grief for an older kernel (andpossibly older lvm) on CentOS 5.6 and that I might have greaterfortunes with CentOS 6.x ?Or am I missing something fundamental? This is my first experiencewith lvm, so it's more than a little probable.
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Sep 22, 2011
We have a Centos 5.6 server mounting two iSCSI volumes from an HP P2000 storage array. Multipathd is also running, and this has been working well for the few months we have been using it. The two volumes presented to the server were created in LVM, and worked without problem.We had a requirement to reboot the server, and now the iSCSI volumes will no longer mount. From what I can tell, the iSCSI connection is working ok, as I can see the correct sessions, and if I run 'fdisk -l' I can see the iSCSI block devices, but the O/S isn't seeing the filesystems. Any LVM command does not show the volumes at all, and 'vgchange -a y' only lists the local boot volume, not the iSCSI volumes. My concern is that, the output of 'fdisk -l' says 'Disk /dev/xxx doesn't contain a valid partition table' for all the iSCSI devices. Research shows that performing the vgchange -a y command should automatically mount any VG's that aren't showing, but it doesn't work.
There's a lot of data on these iSCSI volumes, and I'm no LVM expert. I've read that some have had problems where LVM starts before iSCSI and things get a bit messed up, but I don't know if this is the case here (I can't tell), but if there's a way of switching this round that might help, I'm prepared to give it a go.There was absolutely no indication there were any problems with these volumes, so corruption is highly unlikely.
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May 15, 2009
what the maximum number of logical volumes is for a volume group in LVM ? Is there any known performance hit for creating a large number of small logical volumes vs a small number of large volumes ?
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Jul 9, 2009
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.
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May 3, 2009
I have tried to install debian 5.0 and 4.0 without any luck. I have both tried virt-manager and virt-install with both debian-501-i386-netinst.iso, and full dvd. I't always gives me the same error:Starting install.Could not find an installable distribution at '/xen/debian-501-i386-netinst.iso'
[Code]...
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Jun 8, 2009
i didnt find a solution to a display problem im having. my server mobo is an asus k8n-dre with built in video. after the install(using built in video) the screen dosnt display fully as in black sections on the left and top of the screen. from the searching i did i found something about an "xrandr" command that would let me change the video settings but it didnt do anything with the black areas when i tried it. i also have a nvidia geforce 9500gt video card so i changed the jumper to boot from it and tried again. the black sections are still there but the centos display covers much more of the screen now. theres still about a third of an inch gap on the left hand side and about 1/4 of an inch on the top. ive also tried updating the software to see if it may be a driver issue but no luck. anyone know how or if it can fit to full sceen? the screen displays up to 1440x900 if im not mistaken but with the built in video it gave me lots of display options including the 1440x900. after changing to the nvidia card it only shows 800x600 and 640x480.
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Feb 18, 2010
I am trying to install CentOS 5.2, and the installation ran out of disk space after running for about 2 hours.I checked the FAQ, and it said 1.2 GB. The disk is 3 GB. The default install was selected, and I think that it checks for sufficient available disk space before installing. Still, it ran for quite a while before announcing that it was out of disk space.The Installation Guide is not very helpful, since there is a blank page where the disk space requirement is supposed to be. I just picked the default installation. A search of the forums on "not enough disk space" did not return much.
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Mar 23, 2010
I have successfully installed CentOS 5.4, and after choosing it from the GRUB menu, I am getting the following error message:1706-Smart Array Controller Extended BIOS Data Area Memory Corrupted. Int 13h BIOS Cannot Continue - System Halted.I'm using two SAS disks that came along with the server, left the default RAID configuration (1+0) on a P410 controller
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May 10, 2010
I've got a box (prev used for WinXP) with 2GB Ram and a new 500GB HD to throw in there.Noticed on the Wiki CreatingUpdateMedia and reading as much as I can ramping up for this.I'm curious how I should partition this disk, and what other decisions I'll need to make on install.I see quite a bit of interest also in virtualization, and if I find a need, this could be useful too.Kernel upgrades?how to do? Does the disk have to be wiped or just use an alternate boot device to replace K on HD? I have a tech background in programming and some solaris, but *nix has grown up in the last 5 years.Hopefully devices will function and networking connectivity can be acheived without too much troubleshooting.
I'm doing this in part to be more educated, especially in the new world of web-hosting where you have a virtualized box, root and shell access, and need to manage it yourself. Beyond that even, my goal is to be able to work on my web-host by setting up a remote linux desktop, and I'll be looking for ways to configure that. There are clients out there (VNC, etc), but I'm not sure on the host-server configuration, and also the port-forwarding setup on my local router.
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Jul 2, 2010
[URL]VMware Workstation 7.0.1 Release Notes has a list of supported OS:[URL]According to that, RHEL 5.4 is listed as supported for both host andguest but CentOS 5.4 is only for guest. This is quite strange and, ifit is true, that could be a serious issue.I succeed to install vmware workstaion 7.1 on centos 5.5, but have run-time error:
[root@ ~]# /etc/init.d/vmware start
Starting VMware services:
VMware USB Arbitrator [ OK ]
[code]....
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Feb 25, 2009
I'm new on Dell PowerEdge 2900. I dont know how to install centOS 5.2 on it. whice OS type that I should select. at first I select RH enterprise 5 and it format HDD. already and I put centOS 5.2 in, but it was deny and eject that cd. when I power off it shown that
"root(hd0,1)filesystem type is ext2f2,partition type0x83
kernel/linux/vmlinz%(ksLocations)
Error is : file not found
press any key to continue"
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May 1, 2010
I am trying to do a basic install of CentOS 5.4 on my embedded computer. It is a Linutop 2 system with a AMD Geode 800MHz CPU and 512Mb Ram. Have installed an IBM 40Gb 2.5" HD for OS storage. I am doing the install procedure in text mode. Everything goes as planned until I get to the package selection.
1. Booting from (i386) DVD with "linux text" parameter.
2. Skipping media check.
3. Selecting "English" install language.
4. Selecting "DK-latin1" as keyboard layout.
5. Selecting "Remove all partitions and create default layout" and selecting "no" to modifying partition layout.
6. Selecting "yes" to configure "eth0" and mark to enable "IPv4" on boot.
7. Selecting DHCP for IP configuration and Manual host name.
8. Setting time zone to "Europe/Copenhagen".
9. Setting root password to a 16 digit alphanumeric pass-phrase.
10. De-selecting "Desktop - Gnome" (no other entries selected).
When the system is checking for dependencies, an exception
Traceback (most recent call first):
File "/usr/lib/python2.4/site-packages/yum/packageSack.py", line 426, in returnNewestByName
raise PackageSackError, 'No Package Matching %s' % ui_pats
File "/tmp/treedir.22057/instimage/usr/lib/anaconda/yuminstall.py", line 1072, in getBestKernelByArch
pkgs = ayum.pkgSack.returnNewestByName(pkgname)
[Code]...
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Jul 1, 2010
I've been trying for the past week to install an icecast server on my centos 5 VPS hosted through phurix.
I've tried compiling it, installing it from RPM. but im getting nowhere. Has anybody had any luck installing it, who wouldn't mind explaining how they went about it?
I've searched google for hours on end and all I can come up with is generic cent os 4 guides that just wont work. Im not the best when in comes to linux. I do a great job of copying and pasting to a shell prompt and can use ftp etc.
if this is any use.. heres the last output from my last attempt and compiling it...
[root@vps613 icecast-2.3.2]# ./configure --prefix=/usr/local/icecast
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... no
[Code]...
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Aug 10, 2010
How do I know what sound system my Centos 5.5 install is using and how would I configure which soundcard output to use? I want to use the digital coax output from my M-Audio PCI soundcard, which appears to be detected and loaded. When I launch MPD, it autodetects an alsa sound system, but programs like alsamixer don't exist and I can't hear any sound out of the digital coax output. I haven't checked the 3.5mm stereo out yet.A little confused as to which documentation to be looking at at this point.
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Oct 2, 2010
I am trying to run though the qmailrocks setup on a centos 5.5 and I am running into an issue when trying to telnet to port 25:
telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
Connection closed by foreign host.
Everything else seems to be working (telnet to 110), and I turned off the firewall entirely, but I still cannot telnet to port 25. I also get a blank error within squirrelmail when attempting to send mail out (ERROR:Message not sent. Server replied: ). I apologize for not going directly to the qmailrocks forum, but they are currently closed down (due to lack of funds). I also am a newbie, so I apologize for the lack of needed information. If anyone has any ideas, please let me know what information you would need.
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Nov 6, 2010
I have an i5 Thinkpad running Windows 7 64-bit. VT is enabled in the BIOS. I have installed vmware server v 2.0.2 but am unable to install Centos 5.5 x86_64 as a guest OS. The steps that I followed are as follows:1. Created a new VM, specifying RHEL 5 64-bit as the intended guest OS (per vmware documentation - Centos is not available as a selection2. Downloaded all 8 iso files for Centos v5.5 64-bit3. Modified the CD/DVD drive to 'connect at power' and use an iso with the path pointing to the x86_64 iso 1 of 8When I power up the VM, the console window displays 'ISOLINUX 3.11 2005-09-02 Copyright (C) 1994-2005 H. Peter Anvin' and nothing else. The installation splash screen never appears. As a test, I downloaded the first of 7 iso files for the 32-bit version of Centos 5.5 and pointed the CD/DVD drive to that iso. In that case, the installation starts as expected. I would really like to get the 64-bit version installed and running.
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Jan 14, 2010
What i want to be able to do is create a custom kickstart for my centOS 5 server. I want to create a bootable cd that I can pop in my server and basically walk away for 45 minutes and I come back and its fully installed. All the directions I have read so far tell me that I have to create a seperate ks.cfg and then I need my original centos cd to get it booted. Then the cd will ask for where the ks.cfg file is and I have to type the location. I just want to pop the CD in and type in linux_clean or something and have it perform a custom install based on the information and specification in my ks.cfg. How can I go about doing this?
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Jul 15, 2009
I am having a problem during a fresh install of CentOS 5.3 on an IBM Intellistation Z Pro 6221. I have tested the installation media (CDs). The install runs normally until I am asked to specify the appropriate keyboard.I take the default (English) and hit next. The keyboard and mouse keys become unresponsive though the mouse pointer moves. I can go no further than this. This behavior is the same whether I install in text mode or graphic mode. I have tried the noprobe installation option without success. The box I am doing the install on dual boots fine between Windows XP and CentOS 4.7 currently.Does anyone have an idea of what the problem may be?
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Dec 19, 2009
I am eager to install GSN3 on CentOS 5 and work on GNS3. But i am unable to find a suitable easy guide to install the same. install GSN3 on CentOS.5 with rpm links if you suggest to download.
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Dec 31, 2009
somebody please tell me whether it would be all right to install xp inside CentOS using VMware or it's better to do vice versa if it is ok to install xp inside centos then at the beginning when i install centos should i allocate all hard disk to this OS and later give some to xp , or initially i should keep some space for xp and install centos in the rest ?
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Feb 28, 2010
i wanna ask if it's possible to install centos on hard2 while am running centos on hard1 then after installation is complete boot from the second hard drive. i dont have physical access to the server, all i can is connect to it through SSH. so is it possible to install centos on the second hard drive from CLI! then boot from it?
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May 13, 2010
im the newbie in this area.can anyone tell me how to install centos 5.4 in this hp proliant dl160 server.what I need to do to handle this RAID thing? because it show me not detected any logical hard drive in RAID configuration utility.
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Jul 9, 2010
I have run into a bit of a problem. Trying to get a new install of Centos onto a pair of 750GB drives.
These were once part of a software raid setup. The installer reconises them as a ddf1 raid set. so it does not list the drives as 2 individual drives. I can get around this with the nodmraid
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Jul 14, 2010
It is any possibility to install centos 5.5 on ext4 by anaconda ? Is ext4 filesystem is secure for files server (samba) ?? In anaconda installer there is only ext2, ext3 choice.
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Dec 17, 2010
I have been trying to install clisp on one of our systems and get the error: Missing Dependency: libsigsegv.so.0()(64bit) for package: clisphowever, I have checked and the library libsigsegv-2.7-1.el5.rf.x86_64 and its associated header file package are, in fact,installed.
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