Hello, list, I try to test raidreconf utility on my spare drives in my disk nodes. (i want to convert raid0 chunksize 32K to 1M) Why happenning this? [root@dy-xeon-1 raid-converter]# cat /proc/mdstat Personalities : [linear] [raid0] [raid1] [raid5] [multipath] [faulty] md20 : active raid0 nbd7[3] nbd6[2] nbd5[1] nbd4[0] 39101696 blocks 32k chunks unused devices: <none> [root@dy-xeon-1 raid-converter]# mdadm -D /dev/md20 /dev/md20: Version : 00.90.03 Creation Time : Thu Dec 29 02:02:45 2005 Raid Level : raid0 Array Size : 39101696 (37.29 GiB 40.04 GB) Raid Devices : 4 Total Devices : 4 Preferred Minor : 20 Persistence : Superblock is persistent Update Time : Thu Dec 29 02:02:45 2005 State : clean Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0 Chunk Size : 32K UUID : 6865dd35:58a41e0c:b0c1a78a:2aa6d02d Events : 0.1 Number Major Minor RaidDevice State 0 43 4 0 active sync /dev/nb4 1 43 5 1 active sync /dev/nb5 2 43 6 2 active sync /dev/nb6 3 43 7 3 active sync /dev/nb7 [root@dy-xeon-1 raid-converter]# raidstop --configfile=raidtab.old /dev/md20 [root@dy-xeon-1 raid-converter]# ./raidreconf -o raidtab.old -n raidtab.new -m /dev/md20 Working with device /dev/md20 Parsing raidtab.old Parsing raidtab.new Your on-disk array MUST be clean first. reconfiguration failed [root@dy-xeon-1 raid-converter]# Anybody has an idea? Thanks, Janos File: raidtab.old raiddev /dev/md20 raid-level 0 nr-raid-disks 4 chunk-size 32 persistent-superblock 1 device /dev/nb4 raid-disk 0 device /dev/nb5 raid-disk 1 device /dev/nb6 raid-disk 2 device /dev/nb7 raid-disk 3 File: raidtab.new raiddev /dev/md20 raid-level 0 nr-raid-disks 4 chunk-size 1024 persistent-superblock 1 device /dev/nb4 raid-disk 0 device /dev/nb5 raid-disk 1 device /dev/nb6 raid-disk 2 device /dev/nb7 raid-disk 3 - 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