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huy:centos_upgrade

[[email protected] ~]# mdadm –fail /dev/md0 /dev/sdb1 mdadm: set /dev/sdb1 faulty in /dev/md0 [[email protected] ~]# mdadm –fail /dev/md1 /dev/sdb2 mdadm: set /dev/sdb2 faulty in /dev/md1 [[email protected] ~]# mdadm –fail /dev/md2 /dev/sdb3 mdadm: set /dev/sdb3 faulty in /dev/md2 [[email protected] ~]# mdadm –remove /dev/md0 /dev/sdb1 mdadm: hot removed /dev/sdb1 from /dev/md0 [[email protected] ~]# mdadm –remove /dev/md1 /dev/sdb2 mdadm: hot removed /dev/sdb2 from /dev/md1 [[email protected] ~]# mdadm –remove /dev/md2 /dev/sdb3 mdadm: hot removed /dev/sdb3 from /dev/md2

[[email protected] ~]# mdadm –zero-superblock /dev/sdb1 [[email protected] ~]# mdadm –zero-superblock /dev/sdb2 [[email protected] ~]# mdadm –zero-superblock /dev/sdb3

[[email protected] ~]# mdadm –create /dev/md100 –level=1 –raid-devices=2 missing /dev/sdb1 [[email protected] ~]# mdadm –create /dev/md101 –level=1 –raid-devices=2 missing /dev/sdb2 [[email protected] ~]# mdadm –create /dev/md102 –level=1 –raid-devices=2 missing /dev/sdb3 [[email protected] ~]# mkswap /dev/md100 [[email protected] ~]# mkfs.ext3 /dev/md101 [[email protected] ~]# mkfs.ext4 /dev/md102 [[email protected] ~]# wget http://download.openvz.org/template/precreated/centos-7-x86_64-minimal.tar.gz [[email protected] ~]# mount /dev/md102 /mnt/ [[email protected] ~]# mkdir /mnt/boot [[email protected] ~]# mount /dev/md101 /mnt/boot/ [[email protected] ~]# cd /mnt/ ; tar xvfp /root/centos-7-x86_64-minimal.tar.gz [[email protected] mnt]# for i in dev sys proc; do mount –rbind /$i /mnt/$i;done [[email protected] mnt]# cp /etc/resolv.conf /mnt/etc/ [[email protected] mnt]# chroot /mnt/ [[email protected] /]# yum install grub2-pc [[email protected] /]# yum install kernel.x86_64 mdadm [[email protected] /]# dracut -f /boot/initramfs-3.10.0-693.21.1.el7.x86_64.img 3.10.0-693.21.1.el7.x86_64

[[email protected] /]# grub2-mkconfig > /boot/grub2/grub.cfg [[email protected] /]# grub2-install /dev/sdb

huy/centos_upgrade.txt · Last modified: 2018/04/30 10:24 by slayer