80 lines
1.8 KiB
Bash
80 lines
1.8 KiB
Bash
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#!/bin/bash
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#sources:
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#https://wiki.archlinux.org/title/bcache
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#https://stackoverflow.com/questions/20797819/command-to-change-the-default-home-directory-of-a-user
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#https://unix.stackexchange.com/questions/156102/optimizing-bcache
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#https://evilpiepirate.org/git/linux-bcache.git/tree/Documentation/bcache.txt
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#Block devices
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hdddev0=/dev/sdb
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hdddev1=/dev/sdc
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hdddev2=/dev/sdd
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#Name of the raid device:
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devname=/dev/md0
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#Name of the mounted raid device:
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mountname=/mnt/raid0
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partition_settings="start=2048, type=83"
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set -e
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if [ "$EUID" -ne 0 ]; then
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echo "Please run as root"
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exit
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fi
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read -p "Block devices ${hdddev0}, ${hdddev1} and ${hdddev2} will be wiped, are you sure proceed?" -n 1 -r
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echo
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if [[ ! $REPLY =~ ^[Yy]$ ]]; then
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exit
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fi
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while [ -b /dev/bcache0 ]; then
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echo "Canceld, device /dev/bcache0 is allready present"
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exit
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fi
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echo
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echo "Clean disks, remove partition tables... "
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wipefs -a $hdddev0
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wipefs -a $hdddev1
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wipefs -a $hdddev2
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echo "Partition disks... "
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echo $partition_settings | sfdisk $hdddev0
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echo $partition_settings | sfdisk $hdddev1
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echo $partition_settings | sfdisk $hdddev2
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echo
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echo "Create raid 5... "
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mdadm --create $devname --level=5 --raid-devices=3 ${hdddev0}1 ${hdddev1}1 ${hdddev2}1
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echo
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echo "Wait until device is ready... "
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while [ ! -b $devname ]; do sleep 1; done
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echo
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echo "Format and mount bcache device..."
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mkfs.ext4 $devname
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mkdir $mountname
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mount $devname $mountname
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echo "$devname $mountname ext4 rw 0 0" >> /etc/fstab
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echo
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echo "Config default home directory for new users on bcache partition... "
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echo "home path of exising users will not be moved automaticaly"
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mkdir $mountname/home
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echo "#" >> /etc/default/useradd
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echo "# Modifications:" >> /etc/default/useradd
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echo "HOME=$mountname/home" >> /etc/default/useradd
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echo
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echo "Setup successfully finished"
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