[CentOS] boot problem after disk change on raid1
Bünyamin İzzet
bunyamin.izzet at gmail.com
Thu Sep 8 04:22:32 UTC 2011
On Wed, Sep 7, 2011 at 11:38 PM, Devin Reade <gdr at gno.org> wrote:
> --On Wednesday, September 07, 2011 08:22:47 PM +0300 Bünyamin İzzet
> <bunyamin.izzet at gmail.com> wrote:
>
> - made sure we have boot blocks on both disks, based on information
> at http://grub.enbug.org/MirroringRAID
> modified /boot/grub/device.map from:
> (hd0) /dev/sda
> (hd1) /dev/sdb
> to:
> (hd0) /dev/sda
> (hd0) /dev/sdb
>
I have changed the device.map as you said
> and then:
> # grub
> grub> device (hd0) /dev/sdb
> grub> root (hd0,0)
> grub> setup (hd0)
> grub> quit
>
> And, it is done too.
It still does not boot. I could not see the error message, because it is a
dedicated server and I am not sitting at the monitor of the server. So I
type the lines in grub.conf manually to see the error (I'm not sure if it is
the right thing to see the error).
# grub
Probing devices to guess BIOS drives. This may take a long time.
GNU GRUB version 0.97 (640K lower / 3072K upper memory)
[ Minimal BASH-like line editing is supported. For the first word, TAB
lists possible command completions. Anywhere else TAB lists the possible
completions of a device/filename.]
grub> root (hd1,0)
root (hd1,0)
Filesystem type is ext2fs, partition type 0xfd
grub> kernel /vmlinuz-2.6.18-238.19.1.el5 ro root=/dev/md1 vga=0x317
kernel /vmlinuz-2.6.18-238.19.1.el5 ro root=/dev/md1 vga=0x317
[Linux-bzImage, setup=0x1e00, size=0x1fe01c]
grub> initrd /initrd-2.6.18-238.19.1.el5.img
initrd /initrd-2.6.18-238.19.1.el5.img
Error 28: Selected item cannot fit into memory
grub> quit
quit
If it is not the right thing to see the error message at boot time, is there
any chance to log grub errors, boot errors?
Thanks,
Bunyamin.
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