Hi, I brought up new hardware yesterday for my first RAID install. I followed this Gentoo page describing a software RAID1/LVM install: http://www.gentoo.org/doc/en/gentoo-x86+raid+lvm2-quickinstall.xml Note that I followed this page verbatim, even if it wasn't what I wanted, with exceptions: a) My RAID1 is 3 drives instead of 2 b) I'm AMD64 Gentoo based. c) I used grub-static I did this install mostly just to get a first-hand feel for how to do a RAID install and to try out some of the mdadm commands for real. My intention was to blow away the install if I didn't like it and do it again for real once I started to get a clearer picture about how things worked. For instance, this set of instructions used RAID1 on the /boot directory which I wasn't sure about. NOTE: THIS INSTALL PUTS EVERYTHING ON RAID1. (/, /boot, everything) I didn't start out thinking I wanted to do that. So, the first problem is that on the reboot to see if the install worked the Intel BIOS reports 'no bootable media found'. I am very unclear how any system boots software RAID1 before software is loaded, assuming I understand the Gentoo instructions. The instructions I used to install grub where root (hd0,0) setup (hd0) root (hd1,0) setup (hd1) root (hd2,0) setup (hd2) but the system finds nothing to boot from. to me this sounds like BIOS so looking around I'm currently set up for compatibility but would think that switching to AHCI support would be a better long term solution. Any chance this setting is the root cause? I can boot from CD and assemble the /boot RAID livecd ~ # cat /proc/mdstat Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] unused devices: <none> livecd ~ # mdadm --assemble /dev/md1 /dev/sda1 /dev/sdb1 /dev/sdc1 mdadm: /dev/md1 has been started with 3 drives. livecd ~ # cat /proc/mdstat Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md1 : active raid1 sda1[0] sdc1[2] sdb1[1] 112320 blocks [3/3] [UUU] unused devices: <none> livecd ~ # mdadm --misc --stop /dev/md1 mdadm: stopped /dev/md1 livecd ~ # cat /proc/mdstat Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] unused devices: <none> livecd ~ # Everything I expect to see on /boot seems to be there when using ls. Note that one possible clue - when the Intel BIOS screen first comes up I see some hex digits flashing around in the lower right. I've not seen this before on other machines and I beleive the motherboard (DX58SO) does support some sort of RAID in hardware so maybe there's confusion there? I've not selected RAID in BIOS but possible it's trying to be too clever? Let me know what other info might be needed. I have concerns about this install and will likely blow it away today and do a new one but I figured maybe there's an opportunity to learn here before I do that. Cheers, Mark -- 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
