On 05/19/2010 12:13 PM, Bryn M. Reeves wrote: > On 05/19/2010 12:04 PM, Gary Stainburn wrote: >> Hi folks, >> >> I've got a PC with 5x500GB HDD's running software raid. On drive 0 and 1 I >> had RAID0 for the boot partition and then on all 5 drives I had RAID 5 for >> everything else. > > Why use RAID0 for the boot partition? That means that a failure of > either drive will make the system unbootable (since half the file system > needed for booting is on the dead device). > > I tend to use RAID1 for boot devices, RAID5 for general storage (where I > either don't care too much about write performance or expect a low level > of write I/O). I would only use RAID0 for transient data that can be > easily regenerated after a hardware failure (or combine it with RAID1 if > you need to combine redundancy with better write performance but make > sure you understand the way that different stackings behave[1]). Oops, forgot to include the link: [1] http://www.aput.net/~jheiss/raid10/ >> One of the first two drives has died causing the PC to hang, and then when I >> rebooted it couldn't get past GRUB. I have found out which drive it is and >> disconnected it. It then got past GRUB, loaded the kernel which then paniced >> and hung. It might help to post the panic text (or at least a description) but to be honest I think you'll likely need to rebuild your /boot file system from scratch and re-install grub to get this working again. Regards, Bryn. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
