On 08/28/2014 10:48 AM, Lars E. Pettersson issued this missive:
Hi! I tried to set up a system using four 3TB disks as a raid6. The disks are new, no old partitions laying around. I used a USB stick as install media (Fedora 20 x86_64 Gnome Live). I chose manual partitioning to get everything as I wanted. When this was ready I got the error message that I also needed a BIOS boot partition (I gather that this due to being rather large disks). I tried to create one of those, but it seemed to only be created on one of the discs in the raid array, I wanted it created on all disks, just as the raid partitions. This to be able to boot from any of the disks in the array in case of a failure. As it is now, if the main disk dies, I can not start the system at all. Actually I ended up having three BIOS boot partition on the first disk, being 2, 1, and 1 MB large. Which is quite annoying. But that's another problem... Before submitting a bug report/RFE on this. Is there anyone out there that have done this, from anaconda? I.e. creating raid partitions and BIOS boot partitions on ALL disks? If so, how did you do it?
AFAIK, a BIOS boot partition has to be on the primary disk where it can be found. At boot time, the BIOS no idea about the RAID since it's a
construct of the operating system. Thus the BIOS can't use a partition on the RAID to boot. I think you need to reserve some small space on all the drives (and with 3TB drives you can afford to sacrifice a few MB), use the remainder as your RAID, and let the system put the boot partition in that reserved space on the primary drive (the one the BIOS sees as the boot drive). I prefer hardware RAID for just this reason (e.g. if you lose the primary drive, it can still boot since the RAID is visible to the BIOS). Hardware SATA RAID controllers aren't that expensive ($350 US) for the peace of mind they bring. This is just my opinion. Your mileage may vary. Void where prohibited. Batteries not included. Some assembly required. Yadda, yadda. ---------------------------------------------------------------------- - Rick Stevens, Systems Engineer, AllDigital ricks@xxxxxxxxxxxxxx - - AIM/Skype: therps2 ICQ: 22643734 Yahoo: origrps2 - - - - grep me no patterns and I'll tell you no lines - ---------------------------------------------------------------------- -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
