Alex writes:
Hi, I believe the ability to have /boot on RAID was removed in fc15 so in fc16,
That's news to me. Both F15 and F16 were perfectly happy with /boot on RAID-1, for me. I must admit that they were quite reluctant to do so, and I did have to beat the crap out of both of them; and I lost two good weekends fighting their insolence, before they finally agreed to /boot off RAID-1. But after I showed them who's the boss, there were no complaints.
/boot was a single partition, like /dev/sda1. I recently had my
primary disk fail on one of my systems, and recovering with a failed
sda was very difficult.
Has this issue been fixed in fc17? Is it now possible install RAID on
/boot so there are multiple disks that can be used to read the boot
information?
There were two issues that made RAID-1 for /boot in F15 and F16 a nightmare.If your partition table starts at sector 63, you're most likely boned, because grub2 too fat, with RAID-1 loaded.
Also, on some RAID-based system, anaconda kept generating a grub.conf that was a complete work of fiction. That, of course, didn't help things either. Fortunately, you can still boot in rescue mode, and run grub2-mkconfig to regenerate a grub.conf that has some basis in reality.
Now, if your partition table starts at sector 63, you're still boned. But not quite. If you're running RAID-1, it is possible, with the help of a rescue disk, and with stable UPS providing insurance, nurse the server into restitching all the partitions so that they now start on sector 2048, one disk at a time, without having to back them up, and redo.
Bugzilla tells me that F17's anaconda has a better reputation in emitting grub.conf for RAID-based system, so that's fixed. But, if your partitions still start on sector 63, you're still boned. You must move them.
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