Re: FAQ
Can we get the list administrator to add a footer to each message that has the URL of one of the archives? It will cut down on the questions like "...where is the FAQ?" -ilia Gregory Leblanc wrote: Here's a quickie FAQ, it's very incomplete, but I wanted to get some feedback on what I've got right now. Thanks, Greg Linux-RAID FAQ Gregory Leblanc gleblanc (at) cu-portland.edu Revision History Revision v0.01 31 July 2000 Revised by: gml Initial draft of this FAQ. This is a FAQ for the Linux-RAID mailing list, hosted on vger.rutgers.edu. It's intended as a supplement to the existing Linux-RAID HOWTO, to cover questions that keep occurring on the mailing list. PLEASE read this document before your post to the list. _ 1. General 1.1. Where can I find archives for the linux-raid mailing list? 2. Kernel 2.1. I'm running the DooDad Linux Distribution. Do I need to patch my kernel to make RAID work? 2.2. How can I tell if I need to patch my kernel? 2.3. Where can I get the latest RAID patches for my kernel? 2.4. How do I apply the patch to a kernel that I just downloaded from ftp.kernel.org? 1. General 1.1. Where can I find archives for the linux-raid mailing list? My favorite archives are at Geocrawler. Other archives are available at http://marc.theaimsgroup.com/?l=linux-raidr=1w=2 Another archive site is http://www.mail-archive.com/linux-raid@vger.rutgers.edu/. 2. Kernel 2.1. I'm running the DooDad Linux Distribution. Do I need to patch my kernel to make RAID work? Well, the short answer is, it depends. Distributions that are keeping up to date have the RAID patches included in their kernels. The kernel that RedHat distributes, as do some others. If you download a 2.2.x kernel from ftp.kernel.org, then you will need to patch your kernel. 2.2. How can I tell if I need to patch my kernel? The easiest way is to check what's in /proc/mdstat. Here's a sample from a 2.2.x kernel, with the RAID patches applied. [gleblanc@grego1 gleblanc]$ cat /proc/mdstat Personalities : [linear] [raid0] [raid1] [raid5] [translucent] read_ahead not set unused devices: none> [gleblanc@grego1 gleblanc]$ If the contents of /proc/mdstat looks like the above, then you don't need to patch your kernel. I'll get a copy of something from an UN-patched 2.2.x kernel and put it here shortly. If your /proc/mdstat looks like this one, then you need to patch your kernel. 2.3. Where can I get the latest RAID patches for my kernel? The patches for the 2.2.x kernels up to, and including, 2.2.13 are available from ftp.kernel.org. Use the kernel patch that most closely matches your kernel revision. For example, the 2.2.11 patch can also be used on 2.2.12 and 2.2.13. The patches for 2.2.14 and later kernels are at http://people.redhat.com/mingo/raid-patches/. Use the right patch for your kernel, these patches haven't worked on other kernel revisions yet. 2.4. How do I apply the patch to a kernel that I just downloaded from ftp.kernel.org? Put the downloaded kernel in /usr/src. Change to this directory, and move any directory called linux to something else. Then, type tar -Ixvf kernel-2.2.16.tar.bz2, replacing kernel-2.2.16.tar.bz2 with your kernel. Then cd to /usr/src/linux, and run patch -p1 raid-2.2.16-A0. Then compile the kernel as usual. -- -+------ Ilia Baldine | [EMAIL PROTECTED] Network Research Engineer, | ph#:(919)248-1847 Advanced Networking Research, MCNC | FAX:(919)248-1455 -+-- "I used to think the brain was the most important part of the body, but then I realized who was telling me that." -Emo Philips
Re: LILO for RAID1
set boot to a real bootable device (like /dev/sda) and root to the md device. -ilia "Gabor Z. Papp" wrote: Hello all, what is the correct root/boot LILO config option for RAID1? (root fs on raid) Seems boot=/dev/md0 and root=/dev/md0 OK, but LILO can't boot only when I issue manually the 'kernel root=/dev/md0' -- -+-- Ilia Baldine | [EMAIL PROTECTED] Network Research Engineer, | ph#:(919)248-1847 Advanced Networking Research, MCNC | FAX:(919)248-1455 -+-- "I used to think the brain was the most important part of the body, but then I realized who was telling me that." -Emo Philips
Re: AW: /dev/hda1 mounted
I think you want to have / on RAID. In the HOWTO they discuss putting / on RAID - it is a somwehat involved procedure. Easiest if it is done at install time. RedHat actually offers that option at install, i don't know about SuSe ( i have a suse box at home but I don't run raid on it). I think it is easiest to put / on a RAID5 partition if your system is already installed (by marking the existing / partition as failed in raid, copying everything from / to the md partition and then readding the old / disk back). You need to have a spare disk to do it though. Read the HOWTO for details. -ilia Johnny wrote: Yes, now I know that means. But now I ask me where I can install Linux itself, because it contains the data I want to mirror. In Windows NT I have first have the data with the operating system and then simply add a disk on which the whole thing is mirrored. Where is my OS? I use a small boot partition and an 2 GB "/" partition, the "/" should be mirrored. Isn't that possible. HZ -Ursprngliche Nachricht- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]Im Auftrag von Henry J. Cobb Gesendet am: Mittwoch, 12. Juli 2000 18:42 An: [EMAIL PROTECTED] Betreff: Re: /dev/hda1 mounted If I understand correctly, you're attempting to simply add additional drives to your existing non-RAID boot partition, instead of creating a RAID setup on additional not yet formatted partitions, no? -HJC -- -+---------- Ilia Baldine | [EMAIL PROTECTED] Network Research Engineer, | ph#:(919)248-1847 Advanced Networking Research, MCNC | FAX:(919)248-1455 -+-- "I used to think the brain was the most important part of the body, but then I realized who was telling me that." -Emo Philips
Keeping / on RAID0 in 2.3.99
Hi all, Ihave a system with /boot on a normal partition and / being on md0 (raid0). It runs 2.2.14 or 2.2.16-RAID, however I need to switch to 2.3.99 for a variety of reasons. I've been trying to get it going to no avail for a couple of weeks now. Ihave a few questions I'd like to get answers to: 0) It looks like the 2.3.99 patches from people.redhat.com/mingo have been integrated into 2.3.99-pre9, correct? 1) I see that 2.3.99-pre9 does not have "boot from raid" compile option. If I have /boot on a regular device, but / is on md0, do I still need this support or not? 2)Is there any anticipation that boot support will be added to 2.3.99 in the near future? 3) Is it possible to make 2.3.99 have / on md0 (raid0)? I want to know if I should continue banging my head against the wall, or can I stop now? 4) What is the meaning of life (in the broader sense) :-) ? Please CC me on replies as I am not a subscriber to the list. -ilia -- -+-- Ilia Baldine | [EMAIL PROTECTED] Network Research Engineer, | ph#:(919)248-1847 Advanced Networking Research, MCNC | FAX:(919)248-1455 -+-- "I used to think the brain was the most important part of the body, but then I realized who was telling me that." -Emo Philips
Booting off raid with 2.3.99
Hi, This may have been asked to death by now, but I did not see an answer in the archive: is it possible to have / on RAID0 with 2.3.99 kernel (lets say -pre9)? I have a RH6.2 with 2.2.14 (pre-patched for RAID courtesy of RedHat) so it has / on a raid0 drive (I'm short on disk space to do raid1 or raid5). I need to use 2.3.99 however because some bug has crept up in SMP/SCSI code (don't know exactly where), which freezes up the machine with the apparently infamous now "unexpected IRQ vector 217 in CPU#0". With 2.3.99 no such problem, but I can't boot with / being on /dev/md0. Any suggestions? TIA -ilia -- -+-- Ilia Baldine | [EMAIL PROTECTED] Network Research Engineer, | ph#:(919)248-1847 Advanced Networking Research, MCNC | FAX:(919)248-1455 -+-- "I used to think the brain was the most important part of the body, but then I realized who was telling me that." -Emo Philips
