ubuntu raid setting
1. ll /dev/xv*
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brw-rw---- 1 root disk 202, 16 May 22 04:41 /dev/xvdf brw-rw---- 1 root disk 202, 80 May 22 05:28 /dev/xvdg |
2.mdadm
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mdadm --manage /dev/md0 --stop mdadm --create /dev/md0 --level 0 --chunk=256 --metadata=1.1 --raid-devices=2 /dev/xvdf /dev/xvdg echo DEVICE /dev/xvdf /dev/xvdg | tee /etc/mdadm/mdadm.conf mdadm --detail --scan | tee -a /etc/mdadm/mdadm.conf mkfs.xfs /dev/md0 #### format EBS ## do 1st time only ll /dev/md0 mkdir /raiddrive mount /dev/md0 /raiddrive df -h |
3.vi /etc/fstab
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/dev/md0 /raiddrive auto defaults,nobootwait,noatime 0 0 |
4.vi /etc/initramfs-tools/conf.d/mdadm
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BOOT_DEGRADED=yes |
5.Update the initramfs image
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update-initramfs -k $(uname -r) -u -v |
6.mdadm.conf
before
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cat /etc/mdadm/mdadm.conf DEVICE /dev/xvdf /dev/xvdg ARRAY /dev/md0 metadata=1.1 name=ip-10-1-2-202:0 UUID=xxxxxxxxx |
after1
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echo "CREATE owner=root group=disk mode=0660 auto=yes" > /etc/mdadm/mdadm.conf echo "HOMEHOST " >> /etc/mdadm/mdadm.conf mdadm --detail --scan | tee -a /etc/mdadm/mdadm.conf |
after2
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vi /etc/mdadm/mdadm.conf before : ARRAY /dev/md0 metadata=1.1 after : ARRAY /dev/md0 level=raid0 metadata=1.1 |
7. reboot
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reboot |