request for GRUB with RAID devices only info

aus9 · 10-12-2004, 09:17 PM

Hi

for general info on raid try here
http://wiki.linuxquestions.org/wiki/..._Hardware_RAID

for a good intro to partitioning and raid try here
http://www.linuxhomenetworking.com/linux-adv/raid.htm

another basic way with lots of good grub references
http://www.linuxsa.org.au/mailing-li...3-07/1270.html

I don't intend to use raid as I use partimage. But I would like to update my grub howto for those seeking help with their menu.lst.

I would like to know
1) your ide setup as primary or slave controller 1 to 4 etc
2) your sata has separtate controllers so
3) are you hardware (bios) or software raided?
4) either your working or non-working /etc/fstab
5) either your working or non-working menu.lst (/etc/grub.conf) file
6) either your working or non-working /boot/grub/device.map file

This may help others and with luck will grow over time with working and non-working solutions? I will start the ball rolling

some posts for IDEs have /etc/fstab entries /dev/hde and hdf or hdg
This I assume means
hde set as master
hdf set as slave on (first controller)

hdg set as master (second controller)
hdh set as slave.

In theory hde with hdf should still be (hd0) and (hd1) in grub speak.

spot the errors and hopefully build up the knowledge?

when we have some working examples I will edit my grub file howto and post the link

aus9 · 10-13-2004, 10:53 AM

mandrakeuser.org user anon says in bios select RAID to auto detect ATA if probs
http://mandrakeusers.org/index.php?s...rub++raid++dev

aus9 · 10-13-2004, 11:03 AM

Great link on sata but not on lilo or grub
http://www.linuxmafia.com/faq/Hardware/sata.html

aus9 · 10-13-2004, 11:07 AM

http://mandrakeusers.org/index.php?showtopic=12720&hl=
user benno mentions kernel appends in grub of either
acpi=off or noapic or nolapic

aus9 · 10-13-2004, 11:18 AM

a gentoo user has success with grub and raid 1 and puts grub into both drive mbrs
http://forums.gentoo.org/viewtopic.p...ight=grub+raid

aus9 · 10-13-2004, 11:20 AM

another gentoo user finds the issue is a kernel re-compile.....groan
http://forums.gentoo.org/viewtopic.p...ight=grub+raid

aus9 · 10-18-2004, 08:21 AM

Bearing in mind that the above Gentoo user has success with grub and raid heres some bad news for those using Medley Raid..... Medley is a BIOS-assisted software RAID
http://www.infowares.com/linux/

aus9 · 11-01-2004, 08:07 PM

Apparently HARDWARE raid that need no software are seen as ONE drive by the bios.

This means if you have eg 2 sata as hardware raid and one scsi, and bios boot order is sata then scsi then scsi is (hd1) and not as I would have originally thought as (hd2)

aus9 · 09-23-2005, 09:29 AM

some howtos.....
http://www.linuxsa.org.au/mailing-li...3-07/1270.html
http://www.ibiblio.org/pub/Linux/doc...WTO.html#ss7.3

aus9 · 10-04-2005, 10:31 PM

http://gentoo-wiki.com/HOWTO_Install...D_using_dmraid

howto by LQ user jakertberry

reg_the_geza · 10-05-2005, 03:07 PM

if i install it an a pata ide hard drive, can i then find the correct drivers then migrate the whole OS onto the sata hard drive

aus9 · 10-06-2005, 03:01 AM

thankyou for your question but I do not use raid as per my top post.

try going to hardware and doing a post there if you have hardware raid or going to your distro and trying there?

Deltabweb · 10-06-2005, 10:44 PM

I got my config working with Raid 0 (Using an nforce 4 chipset so it is software with bios authentification raid)
This is the howto I used with some modifications to adapt it to Suse, my config and without boot partition as I didn't want to do one :
http://gentoo-wiki.com/HOWTO_Gentoo_...(Onboard)_RAID

My working fstab

Code:

/dev/mapper/nvidia_gdfbdadc3            /                    ext3       acl,user_xattr        1 1
/dev/sdb6            swap                 swap       defaults              0 0
proc                 /proc                proc       defaults              0 0
sysfs                /sys                 sysfs      noauto                0 0
usbfs                /proc/bus/usb        usbfs      noauto                0 0
devpts               /dev/pts             devpts     mode=0620,gid=5       0 0
/dev/dvd             /media/dvd           subfs      noauto,fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0
/dev/cdrecorder      /media/cdrecorder    subfs      noauto,fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0
/dev/mapper/nvidia_gdfbdadc6 /mnt/Data vfat rw,user 0 0

My working menu.lst (failsafe isn't setted up correctly)

Code:

# Modified by YaST2. Last modification on lun oct  3 08:55:51 TAHT 2005

color white/blue black/light-gray
default 0
timeout 8
gfxmenu (hd0,2)/boot/message

###Don't change this comment - YaST2 identifier: Original name: linux###
title SUSE LINUX 10.0
    root (hd0,2)
    kernel /boot/vmlinuz root=/dev/ram0 init=/linuxrc real_root=/dev/mapper/nvidia_gdfbdadc3 vga=0x317 selinux=0 splash=silent
    initrd /boot/initrdraid

###Don't change this comment - YaST2 identifier: Original name: failsafe###
title Failsafe -- SUSE LINUX 10.0
    root (hd0,2)
    kernel /boot/vmlinuz root=/dev/hda2 vga=normal showopts ide=nodma apm=off acpi=off noresume selinux=0 edd=off 3
    initrd /boot/initrd

(I use a patch you can have with the Tutorial I gave, and had to force the major and minor numbers of the linuxrc. Also recompile the kernel with nv sata driver and device mapper module as statically)

My working device.map : (looks weird as it has nothing specific with raid 0, i needed to force the number of sectors and other stuff to get it work without using a boot partition)

Code:

(hd2)	/dev/sda
(hd3)	/dev/sdc
(hd1)	/dev/sdb
(hd0)	/dev/hda

Good luck helping other people !
Cordially,
Delta

aus9 · 10-07-2005, 05:30 AM

Deltabweb
thankyou for your link and fstab info

I don't use raid but can you explain why you are not trying a root=/dev/ram No in failsafe menu?

aus9 · 10-07-2005, 05:34 AM

here is a software gentoo howto
http://gentoo-wiki.com/HOWTO_Gentoo_..._Software_RAID