On Sat, 2006-06-03 at 20:39 +0100, Karanbir Singh wrote: > >>> I went ahead and set up OpenFiler 1.1.1 on an old Pentium III with two > >>> 250GB > >>> PATA hard drives (one master, one slave), and, with the OpenFiler > >>> installer, > >>> created 4 RAID-1 devices using the two drives as follows: > >>> > >>> md0: /boot [100 MB] > >>> md1: / [4096 MB] > >>> md2: swap [2048 MB] > >>> md3: LVM [rest of space] > >> grub does not handle s/w raid for /boot in its present form, there are a > >> few patches available that bring this functionality in, but we're not > >> rolling that in till there has been enough testing. > >> > > > > This is slightly incorrect. The functionality is there. When you > > configure an MD device for /boot in Anaconda, and say it's a RAID-1 > > mirror device, it sets up grub on both the member disks. Of course, the > > BIOS only boots one of them. > > > > http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/ref-guide/s1-grub-installing.html > > the raid issue is mentioned on the page. > > 0.95-6 of grub will fix this issue directly, but wont be in < 4U5, maybe > by the end of this year. >
The issue mentioned on that page is not what the poster is facing. The issue on that page indicates that if the master disk of the RAID array goes bad, the array may become unusable as the BIOS tries to boot from /dev/hda and if /dev/hda is dead, it can't boot off it. If /dev/hdb is also configured as bootable, grub can be installed on both disks. We migrated to this exact RAID-1 configuration on lucifer (one of Nerdfest's servers) as I had told you a few days ago. It maybe possible to boot with a partially faulty hda too. Grub works fine with a MD RAID-1 /boot (my workstation I'm typing this mail from uses it, my old server maya used it and lucifer uses it). Mukund _______________________________________________ Openfiler-users mailing list [email protected] https://lists.openfiler.com/mailman/listinfo/openfiler-users
