Re: [gentoo-user] root on raid 1 = no boot
On Wednesday 17 September 2008, Nicolas Sebrecht wrote: Volker Armin Hemmann a écrit: and in grub.conf I have this: title=raid root (hd0,0) kernel /vmlinuz root=/dev/md1 md=1,/dev/sda3,/dev/sdb3 nopat Did you tried this : kernel /vmlinuz root=/dev/md1 md=1,1,/dev/sda3,/dev/sdb3 nopat thanks, that did the trick. Now I can forget that genkernel crap.
Re: [gentoo-user] root on raid 1 = no boot
Volker Armin Hemmann a écrit: Did you tried this : kernel /vmlinuz root=/dev/md1 md=1,1,/dev/sda3,/dev/sdb3 nopat nope. Why the second one? The fisrt one is the md device number and the second is to explicitly give the raid level. I personally have this line : kernel /boot/kernel-2.6.25-gentoo-r7-v1 root=/dev/md5 md=5,1,/dev/sda5,/dev/sdb5 ro vga=0x323 -- Nicolas Sebrecht
Re: [gentoo-user] root on raid 1 = no boot
Volker Armin Hemmann a écrit: and in grub.conf I have this: title=raid root (hd0,0) kernel /vmlinuz root=/dev/md1 md=1,/dev/sda3,/dev/sdb3 nopat Did you tried this : kernel /vmlinuz root=/dev/md1 md=1,1,/dev/sda3,/dev/sdb3 nopat -- Nicolas Sebrecht
Re: [gentoo-user] root on raid 1 = no boot
On Wednesday 17 September 2008, Nicolas Sebrecht wrote: Volker Armin Hemmann a écrit: and in grub.conf I have this: title=raid root (hd0,0) kernel /vmlinuz root=/dev/md1 md=1,/dev/sda3,/dev/sdb3 nopat Did you tried this : kernel /vmlinuz root=/dev/md1 md=1,1,/dev/sda3,/dev/sdb3 nopat nope. Why the second one?
[gentoo-user] root on raid 1 = no boot
Hi, I have tried to setup a software Raid1 for root (/), boot, home and var. So far, so good. Support is in kernel. The four ones are assembled: Personalities : [raid1] md3 : active raid1 sda6[0] sdb6[1] 421906944 blocks [2/2] [UU] md2 : active raid1 sda5[0] sdb5[1] 19534912 blocks [2/2] [UU] md1 : active raid1 sda3[0] sdb3[1] 39061952 blocks [2/2] [UU] md0 : active raid1 sda1[0] sdb1[1] 64128 blocks [2/2] [UU] looks good. and in grub.conf I have this: title=raid root (hd0,0) kernel /vmlinuz root=/dev/md1 md=1,/dev/sda3,/dev/sdb3 nopat I also created md1,2,3, in /dev. But on every single boot I get a kernel panic because rootfs is not found. Has anybody an idea why and what is going wrong?
Re: [gentoo-user] root on raid 1 = no boot
On Thu, 28 Aug 2008 16:41:42 +0200, Volker Armin Hemmann [EMAIL PROTECTED] wrote: Hi, I have tried to setup a software Raid1 for root (/), boot, home and var. So far, so good. Support is in kernel. The four ones are assembled: Personalities : [raid1] md3 : active raid1 sda6[0] sdb6[1] 421906944 blocks [2/2] [UU] md2 : active raid1 sda5[0] sdb5[1] 19534912 blocks [2/2] [UU] md1 : active raid1 sda3[0] sdb3[1] 39061952 blocks [2/2] [UU] md0 : active raid1 sda1[0] sdb1[1] 64128 blocks [2/2] [UU] looks good. and in grub.conf I have this: title=raid root (hd0,0) kernel /vmlinuz root=/dev/md1 md=1,/dev/sda3,/dev/sdb3 nopat I also created md1,2,3, in /dev. But on every single boot I get a kernel panic because rootfs is not found. Has anybody an idea why and what is going wrong? You have to know that the kernel isn't able to assemble RAID devices together without the use of mdadm. So you have to use an initrd with the mdadm binary to use a RAID root ! If you are using genkernel, add --mdraid to your kernel compilation command line. Once you have an initrd with the mdadm binary and appropriate script to assemble RAID arrays, you'll be able to boot from your root RAID array ;) HTH. -- Xavier
Re: [gentoo-user] root on raid 1 = no boot
On Thu, 28 Aug 2008 16:54:03 +0200, Xav' wrote: You have to know that the kernel isn't able to assemble RAID devices together without the use of mdadm. So you have to use an initrd with the mdadm binary to use a RAID root ! Could you please keep quiet about that, my computers have been using RAID root devices for years without an initrd and I don't want them to get the idea they need one now. Volker, are sda3 and sdb3 marked as Linux Raid autodetect in cfdisk? If not you may need mdadm, but with the partitions marked as autodetect, the kernel should figure it out for itself. This is the kernel line I use in menu.lst, there is no initrd kernel /boot/vmlinuz root=/dev/md0 vga=794 video=vesafb:ywrap,pmipal,[EMAIL PROTECTED] -- Neil Bothwick Every time I jump on the bandwagon all its wheels fall off. signature.asc Description: PGP signature
Re: [gentoo-user] root on raid 1 = no boot
On Thu, 28 Aug 2008 15:59:03 +0100, Neil Bothwick [EMAIL PROTECTED] wrote: On Thu, 28 Aug 2008 16:54:03 +0200, Xav' wrote: You have to know that the kernel isn't able to assemble RAID devices together without the use of mdadm. So you have to use an initrd with the mdadm binary to use a RAID root ! Could you please keep quiet about that, my computers have been using RAID root devices for years without an initrd and I don't want them to get the idea they need one now. Okay sorry but i wasn't aware about that... When i set up RAID, following HowTos from both gentoo-wiki.com and gentoo.org, and nowhere there is indications of the auto-detection and assembling by the kernel... Maybe not the right information source ? Volker, are sda3 and sdb3 marked as Linux Raid autodetect in cfdisk? If not you may need mdadm, but with the partitions marked as autodetect, the kernel should figure it out for itself. This is the kernel line I use in menu.lst, there is no initrd kernel /boot/vmlinuz root=/dev/md0 vga=794 video=vesafb:ywrap,pmipal,[EMAIL PROTECTED] -- Xavier
Re: [gentoo-user] root on raid 1 = no boot
[ 28.08.2008 16:41 ], Volker Armin Hemmann : Hi, I have tried to setup a software Raid1 for root (/), boot, home and var. So far, so good. Support is in kernel. The four ones are assembled: Personalities : [raid1] md3 : active raid1 sda6[0] sdb6[1] 421906944 blocks [2/2] [UU] md2 : active raid1 sda5[0] sdb5[1] 19534912 blocks [2/2] [UU] md1 : active raid1 sda3[0] sdb3[1] 39061952 blocks [2/2] [UU] md0 : active raid1 sda1[0] sdb1[1] 64128 blocks [2/2] [UU] looks good. and in grub.conf I have this: title=raid root (hd0,0) kernel /vmlinuz root=/dev/md1 md=1,/dev/sda3,/dev/sdb3 nopat I also created md1,2,3, in /dev. But on every single boot I get a kernel panic because rootfs is not found. Has anybody an idea why and what is going wrong? If you are sure kernel has compiled-in modules for raid, device mappers and others to look at the disk .. Maybe it is type of the partition, it should be FD which means 'Linux raid autodetect' . -- Rafał (ert16) Trójniak [EMAIL PROTECTED] : [EMAIL PROTECTED] Jid : [EMAIL PROTECTED] [EMAIL PROTECTED] GPG key-ID : DD681D47 749F E1DC A58F 9084 BBC0 797A 0691 53D6 DD68 1D47 signature.asc Description: OpenPGP digital signature
Re: [gentoo-user] root on raid 1 = no boot
On Donnerstag, 28. August 2008, Neil Bothwick wrote: On Thu, 28 Aug 2008 16:54:03 +0200, Xav' wrote: You have to know that the kernel isn't able to assemble RAID devices together without the use of mdadm. So you have to use an initrd with the mdadm binary to use a RAID root ! Could you please keep quiet about that, my computers have been using RAID root devices for years without an initrd and I don't want them to get the idea they need one now. thanks, the last thing I want to deal with is an initrd. Volker, are sda3 and sdb3 marked as Linux Raid autodetect in cfdisk? If not you may need mdadm, but with the partitions marked as autodetect, the kernel should figure it out for itself. fdisk -l /dev/sda Platte /dev/sda: 500.1 GByte, 500107862016 Byte 255 Köpfe, 63 Sektoren/Spuren, 60801 Zylinder Einheiten = Zylinder von 16065 × 512 = 8225280 Bytes Disk identifier: 0x Gerät boot. AnfangEnde Blöcke Id System /dev/sda1 * 1 8 64228+ fd Linux raid autodetect /dev/sda2 9 981 7815622+ 82 Linux Swap / Solaris /dev/sda3 982584439062047+ fd Linux raid autodetect /dev/sda45845 60801 441442102+ 5 Erweiterte /dev/sda55845827619535008+ fd Linux raid autodetect /dev/sda68277 60801 421907031 fd Linux raid autodetect fdisk -l /dev/sdb Platte /dev/sdb: 500.1 GByte, 500107862016 Byte 255 Köpfe, 63 Sektoren/Spuren, 60801 Zylinder Einheiten = Zylinder von 16065 × 512 = 8225280 Bytes Disk identifier: 0x Gerät boot. AnfangEnde Blöcke Id System /dev/sdb1 * 1 8 64228+ fd Linux raid autodetect /dev/sdb2 9 981 7815622+ 82 Linux Swap / Solaris /dev/sdb3 982584439062047+ fd Linux raid autodetect /dev/sdb45845 60801 441442102+ 5 Erweiterte /dev/sdb55845827619535008+ fd Linux raid autodetect /dev/sdb68277 60801 421907031 fd Linux raid autodetect if I only give root=/dev/md1 it won't boot either. and from config: CONFIG_MD=y CONFIG_BLK_DEV_MD=y # CONFIG_MD_LINEAR is not set # CONFIG_MD_RAID0 is not set CONFIG_MD_RAID1=y are there more kernel options I might have missed?
Re: [gentoo-user] root on raid 1 = no boot
On Donnerstag, 28. August 2008, ert256 wrote: [ 28.08.2008 16:41 ], Volker Armin Hemmann : Hi, I have tried to setup a software Raid1 for root (/), boot, home and var. So far, so good. Support is in kernel. The four ones are assembled: Personalities : [raid1] md3 : active raid1 sda6[0] sdb6[1] 421906944 blocks [2/2] [UU] md2 : active raid1 sda5[0] sdb5[1] 19534912 blocks [2/2] [UU] md1 : active raid1 sda3[0] sdb3[1] 39061952 blocks [2/2] [UU] md0 : active raid1 sda1[0] sdb1[1] 64128 blocks [2/2] [UU] looks good. and in grub.conf I have this: title=raid root (hd0,0) kernel /vmlinuz root=/dev/md1 md=1,/dev/sda3,/dev/sdb3 nopat I also created md1,2,3, in /dev. But on every single boot I get a kernel panic because rootfs is not found. Has anybody an idea why and what is going wrong? If you are sure kernel has compiled-in modules for raid, device mappers and others to look at the disk .. Maybe it is type of the partition, it should be FD which means 'Linux raid autodetect' . it has raid1 compiled in. dm not. Why? I am not using it. And as I have written in that other mail - all partitions are fd.
Re: [gentoo-user] root on raid 1 = no boot
Am Donnerstag, 28. August 2008 17:30:44 schrieb Volker Armin Hemmann: thanks, the last thing I want to deal with is an initrd. It's initramfs nowadays and that's quite easy to handle. Bye... Dirk
Re: [gentoo-user] root on raid 1 = no boot
On Donnerstag, 28. August 2008, Dirk Heinrichs wrote: Am Donnerstag, 28. August 2008 17:30:44 schrieb Volker Armin Hemmann: thanks, the last thing I want to deal with is an initrd. It's initramfs nowadays and that's quite easy to handle. do you have a nice little howto? Not some general one but a 'you need this to get raid1 root booting'. Because I am totally stuck. From the stuff I read it should work - but I always get a root not found panic.
Re: [gentoo-user] root on raid 1 = no boot
You don't need all of that... With mdadm can you put your RAID array as persistent. If it is persistent your kernel can use the autodetect function and build it before mount / I have in my raidtab # cat /etc/raidtab raiddev /dev/md0 raid-level1 chunk-size4k persistent-superblock 1 nr-raid-disks 2 device/dev/sda2 raid-disk 0 device/dev/sdb2 raid-disk 1 After that I built it I use any tools expect, as you, RAID support built in kernel Luigi Am Donnerstag, 28. August 2008 17:30:44 schrieb Volker Armin Hemmann: thanks, the last thing I want to deal with is an initrd. It's initramfs nowadays and that's quite easy to handle. Bye... Dirk
Re: [gentoo-user] root on raid 1 = no boot
On Thu, 28 Aug 2008 19:41:04 +0200, Volker Armin Hemmann wrote: From the stuff I read it should work - but I always get a root not found panic Root device or root fs? -- Neil Bothwick Q: What's the proper plural of a 'Net-connected Windows machine? A: A Botnet signature.asc Description: PGP signature
Re: [gentoo-user] root on raid 1 = no boot
On Donnerstag, 28. August 2008, Volker Armin Hemmann wrote: On Donnerstag, 28. August 2008, Dirk Heinrichs wrote: Am Donnerstag, 28. August 2008 17:30:44 schrieb Volker Armin Hemmann: thanks, the last thing I want to deal with is an initrd. It's initramfs nowadays and that's quite easy to handle. do you have a nice little howto? Not some general one but a 'you need this to get raid1 root booting'. Because I am totally stuck. From the stuff I read it should work - but I always get a root not found panic. I created an initramfs with genkernel (I hate genkernel). Now it works. grmpf. I wish I wouldn't have to use it.
Re: [gentoo-user] root on raid 1 = no boot
On Donnerstag, 28. August 2008, Neil Bothwick wrote: On Thu, 28 Aug 2008 19:41:04 +0200, Volker Armin Hemmann wrote: From the stuff I read it should work - but I always get a root not found panic Root device or root fs? it doesn't find /dev/md1 (unknown block device) and panics. And yes, I created md0,1,2,3 with mknod in /dev The partitions (sda3,b3) themselves are found fine.
Re: [gentoo-user] root on raid 1 = no boot
Le Thursday 28 August 2008 20:45:15 Volker Armin Hemmann, vous avez écrit : On Donnerstag, 28. August 2008, Neil Bothwick wrote: On Thu, 28 Aug 2008 19:41:04 +0200, Volker Armin Hemmann wrote: From the stuff I read it should work - but I always get a root not found panic Root device or root fs? it doesn't find /dev/md1 (unknown block device) and panics. And yes, I created md0,1,2,3 with mknod in /dev Did you create the nodes with de /dev partition unmounted ? I think you have to check this... because when the kernel boot up, the /dev partition is unmounted :) The partitions (sda3,b3) themselves are found fine. Regards, Xavier Parizet signature.asc Description: This is a digitally signed message part.
Re: [gentoo-user] root on raid 1 = no boot
On Donnerstag, 28. August 2008, Xav' wrote: Le Thursday 28 August 2008 20:45:15 Volker Armin Hemmann, vous avez écrit : On Donnerstag, 28. August 2008, Neil Bothwick wrote: On Thu, 28 Aug 2008 19:41:04 +0200, Volker Armin Hemmann wrote: From the stuff I read it should work - but I always get a root not found panic Root device or root fs? it doesn't find /dev/md1 (unknown block device) and panics. And yes, I created md0,1,2,3 with mknod in /dev Did you create the nodes with de /dev partition unmounted ? I think you have to check this... because when the kernel boot up, the /dev partition is unmounted :) yes I did. I copied root to a spare disk first and booted from it.
Re: [gentoo-user] root on raid 1 = no boot
On Thu, 28 Aug 2008 20:52:33 +0200, Xav' wrote: it doesn't find /dev/md1 (unknown block device) and panics. And yes, I created md0,1,2,3 with mknod in /dev Did you create the nodes with de /dev partition unmounted ? I think you have to check this... because when the kernel boot up, the /dev partition is unmounted :) I don't have any such nodes in my static /dev (only console and null in there) they are created by the kernel. -- Neil Bothwick - How many surrealists does it take to change a light bulb? - Two: one to hold the giraffe, the other to fill the bathtub with lots of brightly colored machine tools. signature.asc Description: PGP signature
