Configure Linux Soft RAID0

Configure Linux Soft RAID0

[Email protected] ~]# mdadm-c-v/dev/md0-l 0-n 2/DEV/SDB/DEV/SDC

[Email protected] ~]# mdadm-c-v/dev/md0-l 0-n 2/DEV/SDB/DEV/SDC

Mdadm:chunk size defaults to 512K

Mdadm:/dev/sdb appears to BES part of a RAID array:

LEVEL=RAID0 devices=0 ctime=thu Jan 1 08:00:00 1970

Mdadm:partition table exists On/dev/sdb but would be lost or

Meaningless after creating array

Continue creating array? Y

Mdadm:defaulting to version 1.2 metadata

Mdadm:array/dev/md0 started.

[Email protected] ~]#

[Email protected] ~]# Mdadm-ds

Array/dev/md0 metadata=1.2 name=rhel7.2:0 uuid=cf8fac13:5d74d4da:d142582c:567b346b

[Email protected] ~]# mdadm-ds >/etc/mdadm.conf

[Email protected] ~]#

[Email protected] ~]# mdadm-d/dev/md0

/DEV/MD0:

version:1.2

Creation time:wed 17 21:19:31 2016

Raid LEVEL:RAID0

Array size:10484736 (10.00 GiB 10.74 GB)

Raid Devices:2

Total Devices:2

Persistence:superblock is persistent

Update time:wed 17 21:19:31 2016

State:clean

Active Devices:2

Working devices:2

Failed devices:0

Spare devices:0

Chunk size:512k

name:rhel7.2:0 (Local to host RHEL7.2)

uuid:cf8fac13:5d74d4da:d142582c:567b346b

events:0

Number Major Minor Raiddevice state

0 8 0 Active Sync/dev/sdb

1 8 1 Active SYNC/DEV/SDC

[Email protected] ~]#

[Email protected] ~]# mkfs-t xfs-f/dev/md0

Log stripe unit (524288 bytes) is too large (maximum is 256KiB)

Log stripe unit adjusted to 32KiB

Meta-data=/dev/md0 isize=256 agcount=16, agsize=163712 blks

= sectsz=512 attr=2, projid32bit=1

= Crc=0

data = bsize=4096 blocks=2619392, imaxpct=25

= sunit=128 swidth=256 blks

Naming =version 2 bsize=4096 ascii-ci=0 ftype=0

Log =internal log bsize=4096 blocks=2560, version=2

= sectsz=512 sunit=8 Blks, lazy-count=1

Realtime =none extsz=4096 blocks=0, rtextents=0

[Email protected] ~]# MOUNT/DEV/MP0/RAID0

[Email protected] ~]# Vim/etc/fstab

/DEV/MD0/RAID0 Defaults 0 0

[Email protected] ~]# df-h

Filesystem Size used Avail use% mounted on

/dev/mapper/rhel-root 9.8G 3.3G 6.5G 34%/

Devtmpfs 908M 0 908M 0%/dev

Tmpfs 914M 80K 914M 1%/DEV/SHM

Tmpfs 914M 8.9M 905M 1%/run

Tmpfs 914M 0 914M 0%/sys/fs/cgroup

/DEV/SDA1 197M 91M 106M 47%/boot

/dev/md0 10G 33M 10G 1%/raid0

View directory capacity

[Email protected] ~]# DU-SH/RAID0

0/raid0

[Email protected] ~]# mdadm-r/DEV/MD0/DEV/SDC

Mdadm:hot Remove failed For/dev/sdc:device or resource busy

[Email protected] ~]#

[Email protected] ~]# Cat/proc/mdstat

Personalities: [RAID0]

Md0:active RAID0 sdc[1] sdb[0]

10484736 Blocks Super 1.2 512k chunks

Unused devices: <none>

[[email protected] raid0]# blkid[[email protected] raid0]# blkid[[email protected] raid0]# Blkid

/dev/md0:uuid= "20fefde8-3544-436a-9d48-28ce3863539e" type= "XFS"

This article is from the "Technical Achievement Dream" blog, please be sure to keep this source http://andyliu.blog.51cto.com/518879/1839711

Configure Linux Soft RAID0