[root@CentOS-69-64-minimal ~]# mdadm –fail /dev/md0 /dev/sdb1 mdadm: set /dev/sdb1 faulty in /dev/md0 [root@CentOS-69-64-minimal ~]# mdadm –fail /dev/md1 /dev/sdb2 mdadm: set /dev/sdb2 faulty in /dev/md1 [root@CentOS-69-64-minimal ~]# mdadm –fail /dev/md2 /dev/sdb3 mdadm: set /dev/sdb3 faulty in /dev/md2 [root@CentOS-69-64-minimal ~]# mdadm –remove /dev/md0 /dev/sdb1 mdadm: hot removed /dev/sdb1 from /dev/md0 [root@CentOS-69-64-minimal ~]# mdadm –remove /dev/md1 /dev/sdb2 mdadm: hot removed /dev/sdb2 from /dev/md1 [root@CentOS-69-64-minimal ~]# mdadm –remove /dev/md2 /dev/sdb3 mdadm: hot removed /dev/sdb3 from /dev/md2
[root@CentOS-69-64-minimal ~]# mdadm –zero-superblock /dev/sdb1 [root@CentOS-69-64-minimal ~]# mdadm –zero-superblock /dev/sdb2 [root@CentOS-69-64-minimal ~]# mdadm –zero-superblock /dev/sdb3
[root@CentOS-69-64-minimal ~]# mdadm –create /dev/md100 –level=1 –raid-devices=2 missing /dev/sdb1 [root@CentOS-69-64-minimal ~]# mdadm –create /dev/md101 –level=1 –raid-devices=2 missing /dev/sdb2 [root@CentOS-69-64-minimal ~]# mdadm –create /dev/md102 –level=1 –raid-devices=2 missing /dev/sdb3 [root@CentOS-69-64-minimal ~]# mkswap /dev/md100 [root@CentOS-69-64-minimal ~]# mkfs.ext3 /dev/md101 [root@CentOS-69-64-minimal ~]# mkfs.ext4 /dev/md102 [root@CentOS-69-64-minimal ~]# wget http://download.openvz.org/template/precreated/centos-7-x86_64-minimal.tar.gz [root@CentOS-69-64-minimal ~]# mount /dev/md102 /mnt/ [root@CentOS-69-64-minimal ~]# mkdir /mnt/boot [root@CentOS-69-64-minimal ~]# mount /dev/md101 /mnt/boot/ [root@CentOS-69-64-minimal ~]# cd /mnt/ ; tar xvfp /root/centos-7-x86_64-minimal.tar.gz [root@CentOS-69-64-minimal mnt]# for i in dev sys proc; do mount –rbind /$i /mnt/$i;done [root@CentOS-69-64-minimal mnt]# cp /etc/resolv.conf /mnt/etc/ [root@CentOS-69-64-minimal mnt]# chroot /mnt/ [root@CentOS-69-64-minimal /]# yum install grub2-pc [root@CentOS-69-64-minimal /]# yum install kernel.x86_64 mdadm [root@CentOS-69-64-minimal /]# dracut -f /boot/initramfs-3.10.0-693.21.1.el7.x86_64.img 3.10.0-693.21.1.el7.x86_64
[root@CentOS-69-64-minimal /]# grub2-mkconfig > /boot/grub2/grub.cfg [root@CentOS-69-64-minimal /]# grub2-install /dev/sdb
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