> ECJ wrote: > >>Hello All, >> >>I followed the steps in the link below but my RAID 10 array had a problem >>after a reboot. >>What I did was: >>- constructed 2 RAID0s (3x73GB each) >>- combined these 2 into a RAID1 >>- mkfs.ext3 /dev/md45 (the name of my RAID10 array) >>- mounted it on /data >> >>All seemed ok. It shows on /proc/mdstat. Can write to the partition where >>I mounted it. But after a reboot, I got errors re this new RAID device >> and >>was prompted for the root password to enter repair mode. >>Is there something I am missing here? >> >> >> > Did some tests, and was able to replicate your problem so hopefully this > will work on your system. > > First, make sure the OS can start the RAID-0's. If it can, see if you > can start the RAID10 with: > mdadm -As /dev/md45 > > If you get something like: > mdadm: no devices found for /dev/md45 > > Then the problem is your mdadm.conf file. In that case, run: > mdadm --examine --scan /dev/md4 /dev/md5 >> /etc/mdadm.conf > > And for some reason, it didn't like the devices= field on my system, so > get rid of those and replace it with a "DEVICE partitions" line at the > very top of the file. > > If you can then do the mdadm -As command, you should be good to go. > > And definitely talk to your boss about WHY he wants mirrored stripes. > If its for 'performance reasons' offer to bench the two and that should > show him that any performance difference would be statistically > insignificant and not worth the loss of redundancy. Having numbers to > back up your case may help. > > Hope this helps, > > Daniel > I just don't get it! Everything seems to work fine until I reboot the machine. After the reboot, the array containing /dev/md4, /dev/md5, and /dev/md6 is destroyed. When I examine/scan using my mdadm.conf file, here is what I get... --- snip --- ARRAY /dev/.tmp.md10 level=raid0 num-devices=3 UUID=f6330093:1f007e12:d0c605bd:472a9bf8 devices=/dev/md4,/dev/md5,/dev/md6 Why did it become /dev/.tmp.md10? Cheers, Edward -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
