FC4: RAID5 disappears on reboot
Hi, I'm using FC4 on a PII-333/256MB machine. After I got FC4 installed OK, I added 4 ATA 160GB drives on two separate Promise Ultra 100 TX2 controllers, one drive per channel as master. The drives are recognized as hde, hdi, hdg, and hdk. I fdisked them and created a single "fd" (RAID autodetect) partition on each one. I then created a RAID 5 disk array using mdadm:
mdadm --create /dev/md4 -c128 -n4 --level=5 /dev/hd[eigk]
md4 synched OK, I formatted it with jfs, and was able to mount it. Tried it out, copied data, eveything looked OK. Finally I edited /etc/fstab to add the info for md4.
During reboot I get a message saying md4 is not a recognized device. I looked closer at dmesg output, and saw a message saying hde: unknown partition table.
I typed fdisk /dev/hde, and there was no partiiton table at all! I looked at the other disks in the RAID5 array, and none of them had a partition table.
It looks like the partition tables were wiped out on reboot. Has anyone seen this problem before? Any ideas?