2015-05-14 14:00 GMT+08:00 Adam Goryachev <adam@xxxxxxxxxxxxxxxxxxxxxx>: > On 14/05/15 14:54, d tbsky wrote: > My guess is this is where you went wrong. > Instead use a tool that will do this intelligently, quick google shows this: > sgdisk -R=/dev/sdb /dev/sda > sgdisk -G /dev/sdb > Taken from: > http://unix.stackexchange.com/questions/12986/how-to-copy-the-partition-layout-of-a-whole-disk-using-standard-tools > > My guess is you copied some data as well as the partition table, and > that you are using a mdadm label which is stored at the beginning of the > disk, and possibly are using bitmap on one server and not the other. this step did look suspicious. but I had use it many times on blank hard disks. and it seems works.. > Maybe if you could show some details from each of the raid arrays then > more people can make more informed comments. sure. below is the raid structure of hostA & hostB: /dev/md1: Version : 1.1 Creation Time : Wed Feb 19 09:34:03 2014 Raid Level : raid1 Array Size : 1953177408 (1862.70 GiB 2000.05 GB) Used Dev Size : 1953177408 (1862.70 GiB 2000.05 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Intent Bitmap : Internal and below is the raid structure of my first test: /dev/md1: Version : 1.1 Creation Time : Mon Oct 20 18:51:47 2014 Raid Level : raid5 Array Size : 3906354176 (3725.39 GiB 4000.11 GB) Used Dev Size : 1953177088 (1862.69 GiB 2000.05 GB) Raid Devices : 3 Total Devices : 3 Persistence : Superblock is persistent Intent Bitmap : Internal Update Time : Thu May 14 14:32:25 2015 State : clean Active Devices : 3 Working Devices : 3 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 512K and the raid structure of my second and thrid test: /dev/md1: Version : 1.1 Creation Time : Sun Sep 28 19:20:59 2014 Raid Level : raid10 Array Size : 1953033216 (1862.56 GiB 1999.91 GB) Used Dev Size : 976516608 (931.28 GiB 999.95 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Intent Bitmap : Internal Update Time : Thu May 14 14:33:14 2015 State : active Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0 Layout : near=2 Chunk Size : 512K -- 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
