Hello, I am trying to setup a raid 5+0 on 6 1TB sata disks. I created the arrays like so: mdadm --create /dev/md2 --level=5 --raid-devices=2 /dev/sda /dev/sdb /dev/sdc mdadm --create /dev/md3 --level=5 --raid-devices=2 /dev/sdd /dev/sde /dev/sdf mdadm --create /dev/md4 --level=0 --raid-devices=2 /dev/md2 /dev/md3 The arrays create and sync fine, then I put lvm on top and create a volume group and everything seems fine. I created 2 logical volumes and formatted them with filesystems and initially didn't realize anything was wrong. After running 2 virtual machines on them for a while I noticed the vm's were reporting bad blocks on the volume. I looked in the dom0 dmesg and found tons of messages such as: [444905.674655] raid0_make_request bug: can't convert block across chunks or bigger than 64k 69314431 4 Chunksize for both raid5's and the raid0 is 64k so it would appear the issue is not that the chunk size is greater than 64k. I also find it hard to believe it could be any kind of lvm issue simply because the message in dmesg clearly shows its related to the raid0. Any ideas on what I'm missing here would be greatly appreciated. I would imagine it is some kind of alignment between block and chunk sizes but I can't seem to figure it out :) More detailed information including raid information and errors is at http://pastebin.com/f6a52db74 - chris -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
