Grub Error Collection [Part 1001]

DONAHUE · Posted: Wed Nov 18, 2009 3:32 am Post subject:

boot sysresccd mount the gentoo partitions and post the result of

DONAHUE · Posted: Wed Nov 18, 2009 5:54 pm Post subject:

Strowi · l33t Joined: 19 Aug 2003 Posts: 656 Location: Bonn

hi,

i have a very weird new problem with grub.
I have reinstalled my pc numerous times over the years successfully.
But today i had to recreate the bios-nvraid, and restore from a backup.
So i started sysrescuecd from my usb-stick, created 1 /boot and lvm-root, untarred the backup (which is working fine on another host), and chrooted to /mnt/gentoo.
Then i run

dragos240 · Apprentice Joined: 19 Apr 2009 Posts: 252

Hi.

I got gentoo to work. But not the booting part. When I boot up, the kernel panics, and says it can't mount on unknown block (0,2) or something. Could you tell me what to post?

The above message was at the very end of the last page. So it did not get picked up. Posting it again.

DONAHUE · Posted: Thu Nov 19, 2009 2:13 am Post subject:

dragos:

boot sysresccd mount the gentoo partitions and post the result of

DONAHUE · Posted: Thu Nov 19, 2009 2:15 am Post subject:

Strowi:

What output did you get from

dragos240 · Apprentice Joined: 19 Apr 2009 Posts: 252

DONAHUE · Posted: Thu Nov 19, 2009 4:20 am Post subject:

Good work. As you have probably guessed you probably had a config problem with your hard drive controller.

Strowi · l33t Joined: 19 Aug 2003 Posts: 656 Location: Bonn

DONAHUE · Posted: Thu Nov 19, 2009 10:22 pm Post subject:

wierd indeed. chroot unmerge reemerge grub?? use grub from sysresccd to setup (hd0)??

Strowi · l33t Joined: 19 Aug 2003 Posts: 656 Location: Bonn

yes, tried everything. chrooted , from sysrcd... i already tried grub2 only to see that dmraid seems not to be supported...
However... on a last desperate try i pulled the hd from my notebook, copied over the /boot/grub files and installed grub from there. I got some lvm-errors, but grub installed fine and works now.
Afterwards i tried again from the backup, but that destroyed the mbr again.
Must be sth. with the disks i guess... but i can't seem to find any error....
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DONAHUE · Posted: Fri Nov 20, 2009 5:35 pm Post subject:

at sysresccd command line type grub, no need to chroot. Apologies if I misunderstood the

Strowi · l33t Joined: 19 Aug 2003 Posts: 656 Location: Bonn

i did try both ways... same result.
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Strowi · l33t Joined: 19 Aug 2003 Posts: 656 Location: Bonn

ok, a little update...
my problem seems to be related to dmraid/kernel-specifics.
The sysrescuecd as my desktop-installation both detect the partitions on the raid with the additional p for partitions (like /dev/mapper/pdc_raidsetp1).
My notebook-installation, although it should be as up2date as the desktop detected the raidpartitions oldstyle (without the p).
Only difference is the arch (x86 vs. x86_64).
I guess this makes it grub-unrelated and i have to investigate in dmraid and kernel-settings...

UPDATE: Found it, genkernel using dmraid-1.0.0_16 from source not the ebuild has the new nameing-scheme (with p), dmraid from ebuild on the system has the "undo-p"-patch applied.
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Nonsense · n00b Joined: 03 Dec 2009 Posts: 74

was installing install-x86-minimal-2007.0-r1 into VMWare

after all the configuration

# > reboot

the system unable to complete reboot but it shows [scroll lock : on/off] endlessly.

need help. thank you

luqas · Posted: Fri Dec 04, 2009 3:49 pm Post subject:

Weird because I am typing this from Gentoo inside VMWare. Of course I used the 10.1 livedvd.

NeddySeagoon · Posted: Fri Dec 04, 2009 4:20 pm Post subject:

Nonsense,

Welcome to Gentoo.

That light flashing is a kernel panic. It means you did something wrong with your kernel configuration.
Possibly your made the hard drive controller for your real motherboard hardware instead of the emulated hardware provided by VMware.

There are lots of other things too.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

luqas · Posted: Fri Dec 04, 2009 4:26 pm Post subject:

Yea I found it easier to configure with an IDE controller than SCSI when I create my virtual machine just as an FYI. By default vmware-server defaults to a SCSI controller on the creation. The bad thing is you just cannot change this without going through the whole install process again.

luispa · Guru Joined: 17 Mar 2006 Posts: 359 Location: España

As mention, it's a kernel config problem. I have it running without any problem.

Luis

OnlyTux · Apprentice Joined: 15 Mar 2007 Posts: 174

Hello,

I am setting up a demonstration machine with 4 operating systems. Probably it is not the best partitioning in the world, but I have only one hard disk available:

- /dev/sda1 ext3 openSUSE / 20GB
- /dev/sda2 ext3 Gentoo hardened / 20GB
- /dev/sda3 ufs2 FreeBSD 20GB
- /dev/sda5 ext3 Gentoo desktop / 38GB
- /dev/sda6 ext3 openSUSE /var 20GB
- /dev/sda7 ext3 Gentoo hardened /var 20GB
- /dev/sda8 ext3 backups not mounted 100GB
- /dev/sda9 swap 2GB

I am having problems in getting at least one Grub to boot each of the systems properly.
Every system has its own Grub in its / partition. I tried putting the 3 linux grubs in the MBR alternatively but none of them works as expected:

- openSUSE's grub can only start openSUSE. Every attempt to boot Gentoo returns "Error 13: Invalid or unsupported executable format";
- The Gentoos' grubs can boot openSUSE and the respective Gentoo / partition, but not the other Gentoo. Same error 13;
- I did not play around with FreeBSD's boot loader. It boots fine via the Gentoo's grubs though.

I am surely missing something, but I can't figure what. Anyway, here is the Gentoo desktop's grub.conf. The hardened's one changes only the 'default' line:

Nonsense · n00b Joined: 03 Dec 2009 Posts: 74

Thanks for the feedback everybody.

I did what you had adviced by re-configuring the kernel but fail many times, using the 7.e.kernel modules.

I followed the guide :-
http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?full=1#book_part1_chap7

I appreciate someone who is able to give me advices as i needed this up desperately ( i had a print screen concerning the problem)

your kind immediate assistance is appreciated.Thank You

NeddySeagoon · Posted: Sat Dec 05, 2009 10:02 pm Post subject:

Nonsense,

The handbook only covers the generalities. Neither it not genkernel will provide a kernel that works on VMware.
In your vmware, when you are running the liveCD, what does lspci show ?

With that information we can tell you how to make a kernel that will boot in your VMware.

Note, all the helpers here are volunteers, your problem may be urgent to you but its no more urgent than any other problem here. Plese don't post your email, it will be harvested by spambots. Turn on email notification for responses to the thread.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

Nonsense · n00b Joined: 03 Dec 2009 Posts: 74

Thank you for your advice. (This is my first time using forum )

[ 1 . 987138] md: if you don't use raid , use raid=noautodetect
[ 1 . 987325] md: Autodetecting RAID arrays
[ 1 . 987364] md: scanned 0 and added 0 devices.
[ 1 . 987403] md: autorun . . .
[ 1 . 987442] md: . . . autorun DONE.
[ 1 . 987382] Root-NFS: No NFS server available. giving up
[ 1 . 987521] VFS: Unable to mount roof fs via NFS, trying floppy
[ 1 . 987677] VFS:Cannot open root device"sda3" ort unknown-block(2,0)
[ 1 . 987716] Please append a correct "root=" boot option; here are the available paritions:
[ 1 . 987756] 0b00 1048575 sr0 driver: sr
[ 1 . 987795] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
[ 1 . 988498] Pid: 1, comm: swapper Nopt tainted 2.6.31-gentoo-r6
[ 1 . 988537] Call Trace:
[ 1 . 988577] [<c14573ee>] ? printk+0xf/0x11
[ 1 . 988616] [<c1457344>] panic+0x39/0xd4
[ 1 . 988655] [<c16e1bbb>] mount_block_root+0x163/0x172
[ 1 . 988694] [<c1002930>] ? sys_sigsuspend+0x94/0xa4
[ 1 . 988733] [<c16e1c30>] mount_root+0x66/0x84
[ 1 . 988772] [<c16e1d93>] prepare_namspace+0x145/0x16c
[ 1 . 988811] [<c16e1335>] kernel_init+0x16e/ox17d
[ 1 . 988850] [<c16e11c7>] ? kernel_init+0x0/0x17d
[ 1 . 988889] [<c100354d>] kernel_thread_helper+0x7/0x10

listed above are some loading messages when i try rebooting my vmware. Hope you can give me some advices on this problem.

Your kind immediate assistance is appreciated. Thank you

NeddySeagoon · Posted: Sun Dec 06, 2009 8:00 pm Post subject:

Nonsense,

Boot the CD you used to install in VMware with VMware, like you were going to install again.
in a terminal run the command

luqas · Posted: Sun Dec 06, 2009 8:01 pm Post subject:

Nonsense, That error usually indicates you don't have the correct driver for your disk controller. I don't remember which one you need to use for the SCSI one but I can get you the drive I am using for the IDE one.

Like I said earlier you can't just switch to IDE from SCSI in your VM as you will have to do a full reinstall. I had the same issue with the SCSI and didn't feel like researching it too much (I had alot of time on my hands to do a reinstall).

I found this from http://en.gentoo-wiki.com/wiki/VMware_Guest and if I remember correctly that was the driver that I was trying to use, but I didn't enable the SYM53C8XX low level driver like this says.