Hi There, I am trying to create file system on a software raid5 device but after while it hangs on: Writing superblocks and filesystem accounting information: some details: OS: Scientific Linux release 6.3 (Carbon), 2.6.32-279.el6.x86_64; supermicro 4047R-7JRFT the command i've used: mkfs.ext3 -v -m .1 -b 4096 -E stride=128,stripe-width=2304 /dev/md0 mdadm --detail /dev/md0 /dev/md0: Version : 1.2 Creation Time : Wed Feb 13 15:06:39 2013 Raid Level : raid5 Array Size : 9001838592 (8584.82 GiB 9217.88 GB) Used Dev Size : 500102144 (476.93 GiB 512.10 GB) Raid Devices : 19 Total Devices : 20 Persistence : Superblock is persistent Update Time : Fri Feb 15 15:38:08 2013 State : clean Active Devices : 19 Working Devices : 20 Failed Devices : 0 Spare Devices : 1 Layout : left-symmetric Chunk Size : 512K Name : sandy2:0 (local to host sandy2) UUID : 9e313caa:c33e5d9c:e56f7848:b0c67189 Events : 52 Number Major Minor RaidDevice State 0 8 33 0 active sync /dev/sdc1 1 8 49 1 active sync /dev/sdd1 2 8 65 2 active sync /dev/sde1 3 8 81 3 active sync /dev/sdf1 4 8 97 4 active sync /dev/sdg1 5 8 113 5 active sync /dev/sdh1 6 8 129 6 active sync /dev/sdi1 7 8 145 7 active sync /dev/sdj1 8 8 161 8 active sync /dev/sdk1 9 8 177 9 active sync /dev/sdl1 10 8 193 10 active sync /dev/sdm1 11 8 209 11 active sync /dev/sdn1 12 8 225 12 active sync /dev/sdo1 13 8 241 13 active sync /dev/sdp1 14 65 1 14 active sync /dev/sdq1 15 65 17 15 active sync /dev/sdr1 16 65 33 16 active sync /dev/sds1 17 65 49 17 active sync /dev/sdt1 20 65 65 18 active sync /dev/sdu1 19 8 17 - spare /dev/sdb1 i have tried with mkfs.ext4, and mke2fs as well but the result was the same. any ideas what could be wrong ? Thx! SK -- 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