the result of mdadm -D is as follows: root@host0:~# mdadm -D /dev/md126 /dev/md126: Version : 1.2 Creation Time : Sat Dec 7 16:26:04 2013 Raid Level : raid5 Array Size : 1171499840 (1117.23 GiB 1199.62 GB) Used Dev Size : 234299968 (223.45 GiB 239.92 GB) Raid Devices : 6 Total Devices : 6 Persistence : Superblock is persistent Intent Bitmap : Internal Update Time : Fri Dec 13 22:51:04 2013 State : active Active Devices : 6 Working Devices : 6 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 64K Name : host0:md126 UUID : aaa3075d:f25e3bd0:9dd347c5:fb58192f Events : 158 Number Major Minor RaidDevice State 0 65 112 0 active sync /dev/sdx 1 65 96 1 active sync /dev/sdw 2 65 80 2 active sync /dev/sdv 3 65 64 3 active sync /dev/sdu 4 65 48 4 active sync /dev/sdt 6 65 32 5 active sync /dev/sds root@host0:~# root@host0:~# mdadm -D /dev/md129 /dev/md129: Version : 1.2 Creation Time : Sun Dec 8 15:59:11 2013 Raid Level : raid5 Array Size : 1171498880 (1117.23 GiB 1199.61 GB) Used Dev Size : 234299776 (223.45 GiB 239.92 GB) Raid Devices : 6 Total Devices : 6 Persistence : Superblock is persistent Update Time : Mon Dec 16 21:50:45 2013 State : clean Active Devices : 6 Working Devices : 6 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 128K Name : host0:md129 (local to host sc0) UUID : b80616a9:49540979:90b20aa6:1b22f67b Events : 31 Number Major Minor RaidDevice State 0 65 16 0 active sync /dev/sdr 1 65 0 1 active sync /dev/sdq 2 8 224 2 active sync /dev/sdo 3 8 240 3 active sync /dev/sdp 4 8 208 4 active sync /dev/sdn 5 8 192 5 active sync /dev/sdm root@host0:~# ------------------------------------------------------------------ 发件人:Tommy Apel <tommyapeldk@xxxxxxxxx> 发送时间:2013年12月16日(星期一) 21:32 收件人:lilofile <lilofile@xxxxxxxxxx> 抄 送:linux-raid <linux-raid@xxxxxxxxxxxxxxx> 主 题:Re: 答复:two raid5 performance Please give us the output of mdadm -D for each array aswell, and just in case, also the model of the SSD's in use 2013/12/16 Dag Nygren <dag@xxxxxxxxxx>: > On Monday 16 December 2013 15:57:42 lilofile wrote: >> the disks involved in the array is sTEC ssd disk,they are connected by mpt2sas 6Gb/s > > I/O bus to the card? > > Best > Dag > > -- > 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 -- /Tommy -- 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