> I have read several articles on the internet and researched in the > messages list, but I'm still having trouble configuring a raid level 1 > array that is bootable. > > I configured a server some time agowith Gentoo Linux, Kernel > 2.6.28-hardened-r9, mdadm - v3.0 and 2 IDE hard drives, this is working > correctly. For this installation iused as a basis for consultation > Article http://en.gentoo-wiki.com/wiki/Migrate_to_RAID > > Now, I want to use two SATA drives in raid level 1, > > Now i have Gentoo Linux with kernel 2.6.36-hardened-r6 and mdadm - > v3.1.4 and the instructions of Article dont work. The kernel was > configured with support for disks raid autodetect and supported the raid > level 1. But in the logs of dmesg does not run the auto-detection of the > disks to the array, so in the boot when mounting the root device / > dev/md2 the system can not find the device. > > When I run mdadm - auto-detect the array are found somewhere but still > displays message indicating that the raid device is not a valid > partition table. > > How can you configure a raid level 1 with bootable disks / dev / sda and > / dev / sdb? > I want three partitions: > /dev/md1 - swap - /dev/sda1, /dev/sdb1 > /dev/md2 - boot - /dev/sda2, /dev/sdb2 > /dev/md3 - / - /dev/sda3, /dev/sdb3 > > I am using grub as bootloader. This is very similar to my boot configuration on my two servers. I suspect your problem is the metadata. What version of superblock are you using for /dev/md2? GRUB2 does not recognize a version 1.x superblock. Since the boot images are quite small, and don't require an array of many disks, there is nothing wrong with the 0.90 superblock, however. If your /dev/md2 array is not a 0.9 version superblock, try converting it. Here is my configuration from one of the servers: ARRAY /dev/md0 level=raid6 num-devices=10 metadata=01.2 name=Backup:0 UUID=431244d6:45d9635a:e88b3de5:92f30255 ARRAY /dev/md1 level=raid1 num-devices=2 metadata=0.90 UUID=4cde286c:0687556a:4d9996dd:dd23e701 ARRAY /dev/md2 level=raid1 num-devices=2 metadata=01.2 name=Backup:2 UUID=d45ff663:9e53774c:6fcf9968:21692025 ARRAY /dev/md3 level=raid1 num-devices=2 metadata=01.2 name=Backup:3 UUID=51d22c47:10f58974:0b27ef04:5609d357 Where md0 is a large (11T) data array, md1 is boot, md2 is root, and md3 is swap. The partitioning layout of the boot drives is the same as yours. -- 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
