On 12/16/16 1:14 PM, Egbert Bouwman wrote: > Newbie, but this list seems to be for developers. > If that is true I'll ask my one question, and then retire. It's for both, so this is fine. > Actually it is a question about grub, but I think the raid specialists > know more about this grub problem than the grubbers do. > > Setting up raid1 for /dev/sda and /dev/sdb (actually for missing and /dev/sdb) > on /dev/md/data succeeded, but now I have to do a dpkg-reconfigure > grub-efi-amd64 and i don't know how to specify root in the two grub lines: > set root=... > and the linux command line > linux root= > Please note that i chose md/data, and not the common md0. Here's how Debian's installer automatically set it up on one of our machines, which should help. df: /dev/md0 497817 30722 456815 7% /boot mdadm --detail /dev/md0: 0 8 1 0 active sync /dev/sda1 1 8 17 1 active sync /dev/sdb1 2 8 33 2 active sync /dev/sdc1 blkid: /dev/sda1: UUID="97dad9d1-ffbd-302a-f0d9-91deb32240d0" UUID_SUB="cf4cfce6-2f61-d15c-2ebf-3aea07f9644c" TYPE="linux_raid_member" /dev/sdb1: UUID="97dad9d1-ffbd-302a-f0d9-91deb32240d0" UUID_SUB="c879211d-9efa-3f08-6d54-0f2f3249a839" TYPE="linux_raid_member" /dev/sdc1: UUID="97dad9d1-ffbd-302a-f0d9-91deb32240d0" UUID_SUB="51e0ab31-8fb4-8be3-7626-3ab449732c24" TYPE="linux_raid_member" /dev/md0: UUID="4e19f8d1-d373-42f1-832b-4da7c1a72930" TYPE="ext3" And finally, here's the grub.cfg lines: set root='(mduuid/97dad9d1ffbd302af0d991deb32240d0)' search --no-floppy --fs-uuid --set=root 4e19f8d1-d373-42f1-832b-4da7c1a72930 echo 'Loading Linux 3.2.0-4-amd64 ...' linux /vmlinuz-3.2.0-4-amd64 root=UUID=04324b83-7740-49cd-8866-cb88e1a54845 ro quiet radeon.modeset=0 So it appears the first "set root=" line should be the blkid UUID of the underlying partitions (/dev/sdb in your case?), and the second "search --set=root" should be the UUID of the RAID partition (/dev/md/data is your case?). Works on our machines, anyway. <shrug> -- Robert L Mathews, Tiger Technologies, http://www.tigertech.net/ -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
