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Xubuntu readonly filesystem.
This commit is contained in:
Miguel Scapolla
parent
b39369c09a
commit
7e9c859e60
@ -1,63 +1,105 @@
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XUbuntu 16.04 with read only filesystem for use with SSD disk
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---------------------------------------------------------------
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Xubuntu 16.04 with read only root filesystem for SSD disk
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----------------------------------------------------------
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* Example:
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* example:
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/dev/sda: HDD disk (mechanical disk)
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/dev/sdc: SSD disk (solid state disk)
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/dev/sdc1: /
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/dev/sda2: /home /tmp /var/tmp
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/dev/sda3: swap
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/dev/sdc1: /
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* Install XUbuntu 16.04 in /dev/sdc1.
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* install xubuntu 16.04 in /dev/sdc1.
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* mkdir /hddsda2
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* mkdir -p /var/mounts/sda2 ; chmod 755 /var/mounts/sda2
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* mount /dev/sda2 /hddsda2
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* mkdir -p /var/mounts/ro ; chmod 755 /var/mounts/ro
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* mkdir /hddsda2/tmp
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* mkdir -p /var/mounts/rw ; chmod 755 /var/mounts/rw
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* chmod 1777 /hddsda2/tmp
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* mount /dev/sda2 /mnt
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* mkdir -p /hddsda2/home/username
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* mkdir /mnt/tmp ; chmod 1777 /mnt/tmp
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* rsync -av /home/username/ /hddsda2/home/username/
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* mkdir /mnt/home ; chmod 0755 /mnt/home
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* chmod 0700 /hddsda2/home/username
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* rsync -av /home/ /mnt/home/
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* chown -R username.username /hddsda2/home/username
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* rm -fr /home/* /tmp/* /tmp/.* <-- CAUTION!
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* blkid
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/dev/sda1: UUID="D4EA43ACEA438A26" TYPE="ntfs"
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/dev/sda2: UUID="c1a48592-1d54-4b61-822b-e02ce0c8094d" TYPE="ext4"
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/dev/sda3: UUID="7af9d5db-eac4-49f1-aafd-3cb82f08c9df" TYPE="swap"
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/dev/sdc1: UUID="9d0a8f06-d686-4a6d-97d5-2320598335fb" TYPE="ext4"
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* /usr/local/bin/readonlyfs
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#!/bin/bash
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### BEGIN INIT INFO
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# Provides: readonlyfs
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# Required-Start:
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# Required-Stop:
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# Default-Start: S
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# Default-Stop:
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# Short-Description: Read only root filesystem.
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# Description: This script provides a read only root
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# filesystem for use xubuntu with solid
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# state drives.
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### END INIT INFO
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PATH=/usr/sbin:/usr/bin:/sbin:/bin
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case "$1" in
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start)
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echo "Starting read only filesystem."
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mount -t tmpfs -o size=1M tmpfs /var/mounts/rw
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mount -t aufs -o br=/var/mounts/rw=rw:/var/mounts/ro=ro -o udba=reval none /media
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chmod 0755 /media
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mount -o noatime /dev/sda2 /var/mounts/sda2
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mount --bind /var/mounts/sda2/home /home
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mount --bind /var/mounts/sda2/tmp /tmp
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mount --bind /var/mounts/sda2/tmp /var/tmp
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mount -t tmpfs -o nosuid,nodev,mode=0755,rw,size=1M,uid=lightdm,gid=lightdm tmpfs /var/lib/lightdm
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mount --bind /var/lib/lightdm /var/lib/lightdm-data
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mount -t tmpfs -o nosuid,nodev,mode=0777,rw,size=8M,uid=root,gid=syslog tmpfs /var/log
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mount --bind /var/log /var/spool
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mount --bind /var/log /var/lib/blueman
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;;
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stop)
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echo "Stopping read only filesystem."
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;;
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*)
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echo "Usage: readonlyfs start|stop"
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;;
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esac
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exit 0
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* chmod 0744 /usr/local/bin/readonlyfs
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* ln -s /usr/local/bin/readonlyfs /etc/init.d/readonlyfs
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* ln -s ../init.d/readonlyfs /etc/rcS.d/S99readonlyfs
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* update-rc.d readonlyfs disable
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* update-rc.d readonlyfs enable
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* /etc/fstab
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UUID=9d0a8f06-d686-4a6d-97d5-2320598335fb / ext4 ro,noatime,errors=remount-ro 0 1
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UUID=c1a48592-1d54-4b61-822b-e02ce0c8094d /hddsda2 ext4 rw,noatime,errors=remount-ro 0 1
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UUID=7af9d5db-eac4-49f1-aafd-3cb82f08c9df none swap sw 0 0
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tmpfs /var/lib/lightdm tmpfs nosuid,nodev,mode=0750,rw,size=32M,uid=lightdm,gid=lightdm 0 0
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tmpfs /var/log tmpfs nosuid,nodev,mode=0777,rw,size=32M,uid=root,gid=syslog 0 0
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/hddsda2/home /home none bind 0 0
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/hddsda2/tmp /tmp none bind 0 0
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/hddsda2/tmp /var/tmp none bind 0 0
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/var/log /media none bind 0 0
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/var/log /var/spool none bind 0 0
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/var/log /var/lib/blueman none bind 0 0
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/var/lib/lightdm /var/lib/lightdm-data none bind 0 0
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UUID=<UUID_/dev/sdc1> / ext4 ro,noatime,errors=remount-ro 0 0
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UUID=<UUID_/dev/sda3> none swap sw 0 0
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* /usr/local/bin/remountrw
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* /etc/default/grub
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GRUB_TIMEOUT=N
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GRUB_RECORDFAIL_TIMEOUT=$GRUB_TIMEOUT
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update-grub
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* /usr/local/bin/remountrw + chmod 744
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mount -o remount,rw /
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* /usr/local/bin/remountro
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* /usr/local/bin/remountro + chmod 744
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sync
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sleep 1
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mount -o remount,ro /
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* Issues:
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* The guest session not work: /etc/password and /etc/shadow are read only.
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* Lightdm can not remember the last user logged.
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* Network Manager: wired connection with fixed IP address:
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* Create and chmod 600 the file:
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"/etc/NetworkManager/system-connections/Wired Connection"
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@ -81,3 +123,7 @@ XUbuntu 16.04 with read only filesystem for use with SSD disk
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dns=<IP_ADDRESS>;
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address1=<IP_ADDRESS>/<MASK 0-30>,<DEFAULT_GATEWAY>
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may-fail=false
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* Issues:
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* The guest session not work: /etc/password and /etc/shadow are read only.
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* Lightdm can not remember the last user logged.
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