linux 镜像lvm,为LVM中的LV增加镜像（raid1）冗余-CentOS实操

作者：你好赵伟 | 2024-06-05 03:28:37

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lvm冗余

懒….

hostnamectl set-hostname virt-us-

df -h

umount /home

lvremove /dev/mapper/centos_hostname-home -y

pvdisplay

vgreduce centos_hostname /dev/sd{b,c}1

pvremove /dev/sd{b,c}1

yum -y install mdadm

sfdisk -d /dev/sda | sfdisk /dev/sdb

pvcreate /dev/sdb2

vgextend centos_hostname /dev/sdb2

lvconvert -m1 centos_hostname/root /dev/sdb2 -y

lvconvert -m1 centos_hostname/swap /dev/sdb2 -y

sed ‘s/\/dev\/mapper\/centos_hostname-home/#\/dev\/mapper\/centos_hostname-home/g’ /etc/fstab

mkfs.ext4 /dev/sdc1

echo ‘/dev/sdc1 /home ext4 defaults 0 0’ >> /etc/fstab

mount -a

mkdir /vz

lvcreate -m1 -l 100%FREE -n vz centos_hostname

mkfs.ext4 /dev/mapper/centos_hostname-vz

echo ‘/dev/mapper/centos_hostname-vz /vz ext4 defaults 0 0’ >> /etc/fstab

mount -a

df -h

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