5 Cups of Ubuntu
Hi There!
Anybody who is familiar with GRUB and
software raids may be can help me to solve issue.
Enviroment:
Ubuntu server is 11.04 64 bit, 2 HDD, 500gb each. Each HDD has 3 partitions:
/boot, root and swap. Each of the partitions joined to software RAID1, mirroring.
I install 11.04 64 bit and after reboot I have got "invalid arch independent elf magic" in GRUB. Ubuntu 9.04 works fine in the he same enviroment.
Looking forward any help and suggestions.
5 Cups of Ubuntu
I read a lot of hints, don't put SWAP to the raid1, no sense, I reconfigured and made fresh install.
Now I have /dev/md0/ - /boot (ext4) and /dev/md1 - / (ext4), but GRUB throws me exception again after reboot : "no such disk". According hints from other threads I boot from Live CD and start Boot Info Script 0.60. See RESULTS.txt from it. What is wrong again ?
Last edited by b0ba; July 28th, 2011 at 02:38 PM.
5 Cups of Ubuntu
Code:RESULTS.txt Boot Info Script 0.60 from 17 May 2011 ============================= Boot Info Summary: =============================== => Grub2 (v1.97-1.98) is installed in the MBR of /dev/sda and looks at sector 1 of the same hard drive for core.img. core.img is at this location and looks for (md0)/boot/grub on this drive. => Grub2 (v1.97-1.98) is installed in the MBR of /dev/sdb and looks at sector 1 of the same hard drive for core.img. core.img is at this location and looks for (md0)/boot/grub on this drive. sda1: __________________________________________________________________________ File system: Boot sector type: - Boot sector info: Mounting failed: mount: unknown filesystem type '' sda2: __________________________________________________________________________ File system: Extended Partition Boot sector type: - Boot sector info: sda5: __________________________________________________________________________ File system: linux_raid_member Boot sector type: - Boot sector info: sda6: __________________________________________________________________________ File system: linux_raid_member Boot sector type: - Boot sector info: sda7: __________________________________________________________________________ File system: swap Boot sector type: - Boot sector info: sdb1: __________________________________________________________________________ File system: Boot sector type: - Boot sector info: Mounting failed: mount: unknown filesystem type '' mount: unknown filesystem type '' sdb2: __________________________________________________________________________ File system: Extended Partition Boot sector type: - Boot sector info: sdb5: __________________________________________________________________________ File system: linux_raid_member Boot sector type: - Boot sector info: sdb6: __________________________________________________________________________ File system: linux_raid_member Boot sector type: - Boot sector info: sdb7: __________________________________________________________________________ File system: swap Boot sector type: - Boot sector info: ============================ Drive/Partition Info: ============================= Drive: sda _____________________________________________________________________ Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes Partition Boot Start Sector End Sector # of Sectors Id System /dev/sda1 2,048 4,095 2,048 fd Linux raid autodetect /dev/sda2 6,142 976,771,071 976,764,930 5 Extended /dev/sda5 6,144 1,957,887 1,951,744 fd Linux raid autodetect /dev/sda6 21,694,464 976,771,071 955,076,608 fd Linux raid autodetect /dev/sda7 1,959,936 21,688,319 19,728,384 82 Linux swap / Solaris Drive: sdb _____________________________________________________________________ Disk /dev/sdb: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes Partition Boot Start Sector End Sector # of Sectors Id System /dev/sdb1 2,048 4,095 2,048 fd Linux raid autodetect /dev/sdb2 6,142 976,771,071 976,764,930 5 Extended /dev/sdb5 6,144 1,957,887 1,951,744 fd Linux raid autodetect /dev/sdb6 21,694,464 976,771,071 955,076,608 fd Linux raid autodetect /dev/sdb7 1,959,936 21,688,319 19,728,384 82 Linux swap / Solaris "blkid" output: ________________________________________________________________ Device UUID TYPE LABEL /dev/loop0 squashfs /dev/sda5 5db37a62-21c8-bcab-9522-eb6bc2319155 linux_raid_member dbs12:0 /dev/sda6 a424d895-07ae-012b-8a3d-c2f8435e4a95 linux_raid_member dbs12:1 /dev/sda7 2eb5aea8-aa35-491b-a3c1-87690641d83e swap /dev/sdb7 4f6a56f7-d808-45d7-a56e-f37913246674 swap
Last edited by b0ba; July 28th, 2011 at 02:55 PM.
Ubuntu addict and loving it
Erm.
You seem to have 4 partitions set up. What is the fourth?
I suspect Grub's kernel cannot find a file it needs. So it is looking in the wrong place. It may be possible to manually boot from the rescue> prompt and then you can reinstall Grub.
Have a look at: https://wiki.archlinux.org/index.php..._command_shell section "Using the rescue console".
ASRock P67 Extreme6, Intel i5 2500K, 8GB RAM, nVidia 6600GT, 4x1TB RAID1+0
5 Cups of Ubuntu
so as I told sda5 and sda6 partitions could be mount to md0.
from grub panel:
grub> insmod raid
grub> set root=(md0)
grub> linux /boot/vmlinuz26 root=/dev/md0
I have got again "no such disk"
I have tried to add :grub> insmod mdraid
and I have error : file not found. May be this is reason.
Last edited by b0ba; July 28th, 2011 at 06:23 PM.
Ubuntu addict and loving it
When you installed 11.04 did you also reinstall Grub to the MBRs? 11.04 uses Grub 1.99 and your bootinfoscript is showing an earlier version. I think they need to match.
It may be possible to boot the 11.04 live CD and see if it sees the RAID arrays (install mdadm if not). Then use it to reinstall Grub to the MBRs. I would assume you can do it the normal way like this:
sudo mount /dev/md0 /mnt
sudo grub-install --root-directory=/mnt /dev/sda
sudo grub-install --root-directory=/mnt /dev/sdb
I also see that in bootinfoscript the Grub core looks for (md0)/boot/grub which seems wrong to me if you have a separate boot partition: it should be (md0)/grub. So there may be a couple of things wrong here. I'm not sure why it worked with 9.10 unless, as I suggest, Grub was not reinstalled when 11.04 was installed.
I have booted a non-RAID from the rescue prompt. I have not tried to boot a RAID. For a non-RAID without separate boot partition you do this (assuming your root patition is hd0,2):
rescue> ls
to see what partitions Grub can detect. Does yours see (md0) and (md1)?
rescue> set prefix=(hd0,2)/boot/grub
rescue> insmod (hd0,2)/boot/grub/linux.mod
rescue> set root=(hd0,2)
rescue> linux /vmlinuz root=/dev/sda2 ro
rescue> initrd /initrd.img
rescue> boot
If yours sees (md0) you might try:
rescue> insmod raid
rescue> set prefix=(md0)/grub
rescue> insmod (md0)/grub/linux.mod
rescue> set root=(md0)
rescue> linux /vmlinuz root=/dev/md0 ro
rescue> initrd /initrd.img
rescue> boot
Last edited by YesWeCan; July 29th, 2011 at 01:15 AM.
ASRock P67 Extreme6, Intel i5 2500K, 8GB RAM, nVidia 6600GT, 4x1TB RAID1+0
5 Cups of Ubuntu
Thank you very much for quick answer. I loaded again from LIVE CD ( Ubuntu Desktop 11.04 ). See log, step by step what I did.
I have following question:
I dont see mdadm.mod file in the grub folder, but grub config file has it. is it OK ?
Seem not, because grub throws error : no such file
Code:ubuntu@ubuntu:~$ uname -a Linux ubuntu 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux ubuntu@ubuntu:~$ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=11.04 DISTRIB_CODENAME=natty DISTRIB_DESCRIPTION="Ubuntu 11.04" ubuntu@ubuntu:~$ sudo mount /dev/md0 /mnt mount: special device /dev/md0 does not exist ubuntu@ubuntu:~$ sudo apt-get install mdadm Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: mdadm postfix 0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded. …………………….. Setting up mdadm (3.1.4-1+8efb9d1ubuntu4) ... * Starting MD monitoring service mdadm --monitor [ OK ] Setting up postfix (2.8.2-1ubuntu1) ... Done. ubuntu@ubuntu:~$ sudo mdadm --assemble --scan mdadm: /dev/md/0 has been started with 2 drives. mdadm: /dev/md/1 has been started with 2 drives. ubuntu@ubuntu:~$ sudo mount /dev/md0 /mnt ubuntu@ubuntu:~$ ls /mnt/ abi-2.6.38-8-server initrd.img-2.6.38-8-server memtest86+_multiboot.bin vmlinuz-2.6.38-8-server config-2.6.38-8-server lost+found System.map-2.6.38-8-server grub memtest86+.bin vmcoreinfo-2.6.38-8-server ubuntu@ubuntu:~$ ls /mnt/grub acpi.mod ext2.mod hello.mod ntfscomp.mod sleep.mod affs.mod extcmd.mod help.mod ntfs.mod squash4.mod afs_be.mod fat.mod hexdump.mod ohci.mod tar.mod afs.mod fixvideo.mod hfs.mod part_acorn.mod terminal.lst aout.mod font.mod hfsplus.mod part_amiga.mod terminal.mod appleldr.mod fshelp.mod iorw.mod part_apple.mod terminfo.mod ata.mod fs.lst iso9660.mod part_bsd.mod test_blockarg.mod ata_pthru.mod functional_test.mod jfs.mod part_gpt.mod testload.mod at_keyboard.mod gcry_arcfour.mod jpeg.mod partmap.lst test.mod befs_be.mod gcry_blowfish.mod keylayouts.mod part_msdos.mod tga.mod befs.mod gcry_camellia.mod keystatus.mod part_sun.mod trig.mod bitmap.mod gcry_cast5.mod linux.mod part_sunpc.mod true.mod bitmap_scale.mod gcry_crc.mod loadbios.mod parttool.lst udf.mod blocklist.mod gcry_des.mod loadenv.mod parttool.mod ufs1.mod boot.mod gcry_md4.mod locale password.mod ufs2.mod bsd.mod gcry_md5.mod loopback.mod password_pbkdf2.mod uhci.mod btrfs.mod gcry_rfc2268.mod lsacpi.mod pbkdf2.mod usb_keyboard.mod bufio.mod gcry_rijndael.mod lsefimmap.mod pci.mod usb.mod cat.mod gcry_rmd160.mod lsefisystab.mod play.mod usbms.mod chain.mod gcry_seed.mod lsmmap.mod png.mod usbserial_common.mod cmp.mod gcry_serpent.mod ls.mod probe.mod usbserial_ftdi.mod command.lst gcry_sha1.mod lspci.mod raid5rec.mod usbserial_pl2303.mod configfile.mod gcry_sha256.mod lssal.mod raid6rec.mod usbtest.mod core.efi gcry_sha512.mod lvm.mod raid.mod video_bochs.mod cpio.mod gcry_tiger.mod mdraid09.mod read.mod video_cirrus.mod cpuid.mod gcry_twofish.mod mdraid1x.mod reboot.mod video_fb.mod crypto.lst gcry_whirlpool.mod memdisk.mod regexp.mod videoinfo.mod crypto.mod gettext.mod memrw.mod reiserfs.mod video.lst cs5536.mod gfxmenu.mod minicmd.mod relocator.mod video.mod datehook.mod gfxterm.mod minix2.mod scsi.mod videotest.mod date.mod gptsync.mod minix.mod search_fs_file.mod xfs.mod datetime.mod grub.cfg mmap.mod search_fs_uuid.mod xnu.mod dm_nv.mod grub.efi moddep.lst search_label.mod xnu_uuid.mod echo.mod grubenv msdospart.mod search.mod xzio.mod efi_gop.mod gzio.mod multiboot2.mod serial.mod zfsinfo.mod efi_uga.mod halt.mod multiboot.mod setjmp.mod zfs.mod elf.mod hashsum.mod nilfs2.mod setpci.mod example_functional_test.mod hdparm.mod normal.mod sfs.mod ubuntu@ubuntu:~$ sudo grub-install --root-directory=/mnt/ /dev/sda Installation finished. No error reported. ubuntu@ubuntu:~$ sudo grub-install --root-directory=/mnt/ /dev/sdb Installation finished. No error reported. ubuntu@ubuntu:~$ ls /mnt/grub acpi.mod ext2.mod hello.mod ntfscomp.mod sleep.mod affs.mod extcmd.mod help.mod ntfs.mod squash4.mod afs_be.mod fat.mod hexdump.mod ohci.mod tar.mod afs.mod fixvideo.mod hfs.mod part_acorn.mod terminal.lst aout.mod font.mod hfsplus.mod part_amiga.mod terminal.mod appleldr.mod fshelp.mod iorw.mod part_apple.mod terminfo.mod ata.mod fs.lst iso9660.mod part_bsd.mod test_blockarg.mod ata_pthru.mod functional_test.mod jfs.mod part_gpt.mod testload.mod at_keyboard.mod gcry_arcfour.mod jpeg.mod partmap.lst test.mod befs_be.mod gcry_blowfish.mod keylayouts.mod part_msdos.mod tga.mod befs.mod gcry_camellia.mod keystatus.mod part_sun.mod trig.mod bitmap.mod gcry_cast5.mod linux.mod part_sunpc.mod true.mod bitmap_scale.mod gcry_crc.mod loadbios.mod parttool.lst udf.mod blocklist.mod gcry_des.mod loadenv.mod parttool.mod ufs1.mod boot.mod gcry_md4.mod locale password.mod ufs2.mod bsd.mod gcry_md5.mod loopback.mod password_pbkdf2.mod uhci.mod btrfs.mod gcry_rfc2268.mod lsacpi.mod pbkdf2.mod usb_keyboard.mod bufio.mod gcry_rijndael.mod lsefimmap.mod pci.mod usb.mod cat.mod gcry_rmd160.mod lsefisystab.mod play.mod usbms.mod chain.mod gcry_seed.mod lsmmap.mod png.mod usbserial_common.mod cmp.mod gcry_serpent.mod ls.mod probe.mod usbserial_ftdi.mod command.lst gcry_sha1.mod lspci.mod raid5rec.mod usbserial_pl2303.mod configfile.mod gcry_sha256.mod lssal.mod raid6rec.mod usbtest.mod core.efi gcry_sha512.mod lvm.mod raid.mod video_bochs.mod cpio.mod gcry_tiger.mod mdraid09.mod read.mod video_cirrus.mod cpuid.mod gcry_twofish.mod mdraid1x.mod reboot.mod video_fb.mod crypto.lst gcry_whirlpool.mod memdisk.mod regexp.mod videoinfo.mod crypto.mod gettext.mod memrw.mod reiserfs.mod video.lst cs5536.mod gfxmenu.mod minicmd.mod relocator.mod video.mod datehook.mod gfxterm.mod minix2.mod scsi.mod videotest.mod date.mod gptsync.mod minix.mod search_fs_file.mod xfs.mod datetime.mod grub.cfg mmap.mod search_fs_uuid.mod xnu.mod dm_nv.mod grub.efi moddep.lst search_label.mod xnu_uuid.mod echo.mod grubenv msdospart.mod search.mod xzio.mod efi_gop.mod gzio.mod multiboot2.mod serial.mod zfsinfo.mod efi_uga.mod halt.mod multiboot.mod setjmp.mod zfs.mod elf.mod hashsum.mod nilfs2.mod setpci.mod example_functional_test.mod hdparm.mod normal.mod sfs.mod ubuntu@ubuntu:~$ sudo umount /dev/md0 ubuntu@ubuntu:~$ sudo reboot
5 Cups of Ubuntu
After reboot I have again GRUB console. See attached picture from server room.
May be was bad idea set up insmod mdadm09, but folder with grub has no mdadm at all.
Anyway something is wrong here. Found one task:
http://savannah.gnu.org/task/?10513
task #10513: Split mdraid.mod into mdraid09.mod and mdraid10.mod
P.S. Forget to answer:(md0) is /boot partitions. it is RAID1.for (md0)/boot/grub which seems wrong to me if you have a separate boot partition:
Last edited by b0ba; July 29th, 2011 at 04:11 PM.
First Cup of Ubuntu
Hi there,
I am having the exact same problem. My setup is slightly simpler than yours in that I'm just using raid0 to stripe two drives in my laptop. I have one raid partition (/dev/md0) for my root filesystem and am able to boot as long as the /boot partition is installed on another drive (for me, /dev/sda1). However, if I change grub to look for (md0), it drops me to a rescue prompt with "file not found". I believe (and at this point am fairly certain) that grub does not insmod raid and mdraid1x (I'm using 1.2 superblocks) and therefore has no idea what (md0). I know this because when I 'ls' at the rescue prompt, (md0) isn't there, but as soon as I insert those modules, it is.
I've added the insmods everywhere I can find in grub.cfg, but to no avail. Which makes sense because how can grub load raid modules on which are located on a raid array. Which one's the chicken and which one's the egg? I don't know how you can get grub's core.img to understand raid and I can't find anything on the web about it. I'm just going to install the boot part on /dev/sda1 and be done with it...
Ubuntu addict and loving it
I believe there is a way of installing Grub with the raid module included but I can't recall the command.
Try a chroot reinstall. See section 12.4 here: https://help.ubuntu.com/community/Grub2#ChRoot
You have to install mdadm in live CD first. Don't forget to mount the boot partition.
BTW Grub 1.99 can (is designed to) boot a RAID without needing a separate boot partition.
Last edited by YesWeCan; July 30th, 2011 at 11:13 AM.
ASRock P67 Extreme6, Intel i5 2500K, 8GB RAM, nVidia 6600GT, 4x1TB RAID1+0
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