Hi Ian, I have no experience with Debian, RAID-1 (software) and Grub, but I use it on numerous "low end server" Fedora installations.
Make sure you install a copy of the grub boot loader in the master boot record of each hard drive, otherwise a failure of Disk0 will result in a machine that does not boot from the Disk1 mirror. This site/article shows how to install grub to the 2nd hdd: http://lists.us.dell.com/pipermail/linux-poweredge/2003-July/008898.html While this one shows the hdd replacement method to rebuild your arrays: http://www.howtoforge.com/replacing_hard_disks_in_a_raid1_array I hope this helps avoid future heart ache. Regards, Andre Tomlinson Network Administrator / IT Manager All Saints Grammar School [email protected] www.allsaints.nsw.edu.au -----Original Message----- From: Ian Su [mailto:[email protected]] Sent: 11 August 2010 10:41 To: slug Subject: [SLUG] Re: GRUB2 + RAID-1 on debian? Oops!! I spent all of last night trying to resolve this and the moment I send slug an email I figure it out myself! All I had to do was: $ dpkg-reconfigure grub-pc Not sure what magic happened behind the scenes but now everything works! Sorry to have disturbed you guys :) Ian On 2010-08-11 10:33am, Ian Su wrote: > Hi, > > I've been trying to migrate my PC to RAID-1 on debian (testing), > and it's up and running but update-grub and grub-install fails, I > could just edit grub.cfg by hand but that's not ideal. > > I've got > /dev/md0 (sda1, sdb1) --> /boot > /dev/md1 (sda3, sdb3) --> / > > $ update-grub > grub-probe: error: no such disk. > > $ grub-install /dev/sda > grub-probe: error: no such disk. > > I tried to replace grub-probe with a wrapper to see what it was > doing, and essentially it fails on > > $ grub-probe --device /dev/md0 --target=abstraction > grub-probe: error: no such disk. > > and > > $ grub-probe --device-map=/boot/grub/device.map --target=fs --device /dev/md0 > grub-probe: error: no such disk. > > I think it's konking out because /dev/md0 is a software raid-1 > device. Anyone ever encounter anything like this before and know > the way around it? > > Cheers, > Ian -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
