[1.1.9.28] Mounting SD card as home partition and android storage [answered]

asked 2015-09-11 08:49:01 +0300

hopey
581 ●9 ●11 ●13

updated 2015-10-24 00:35:22 +0300

Leinad
1566 ●16 ●26 ●29

Edit (Leinad): please don't change system filesand take a look here instead: http://talk.maemo.org/showthread.php?p=1486543#post1486543

(edit jolladiho) preconditions:

1. your sd has a partitiontable
2. your first partition has a linux filesystem
3. your linux filesystem contains the folders .home and .android on root folder

I am using this script to mount my home dir and android folder to SD card /usr/sbin/mount-sd.custom.sh

#!/bin/bash

ACTION=$1

if [ "$ACTION" = "add" ]; then
  mount /dev/mmcblk1p1 /mnt/sd
  mount -o bind /mnt/sd/.home /home/nemo
  mount -o bind /mnt/sd/.android /data/media
else
  umount /data/media
  umount /home/nemo
  umount /mnt/sd
fi

and then mount it with /lib/systemd/system/mount-custom.service

[Unit]
Description=Handle custom sdcard
After=local-fs.target
RequiresMountsFor=/home

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/usr/sbin/mount-sd.custom.sh add
ExecStop=/usr/sbin/mount-sd.custom.sh remove

[Install]
WantedBy=multi-user.target

(edit jolladiho): enable the service with "systemctl enable mount-custom.service"

After this to make the fusermount work properly for android storage we have to make changes in two files for 1.1.9.28, look the lines under the "#original:" tag:

/opt/alien/system/script/alien_setup_chroot.sh:

#original: for d in bin sbin lib usr var etc tmp home vendor; do
for d in bin sbin lib usr var etc tmp vendor; do
    if [ "" == "$(grep $ROOT/$d /proc/mounts)" ]; then
        echo "mount $ROOT/$d"
        mount --bind /$d $ROOT/$d
    fi
done

#original: for d in dev sys run media; do
for d in dev sys run media home; do
    if [ "" == "$(grep $ROOT/$d /proc/mounts)" ]; then
        echo "mount $ROOT/$d"
        if [ $d == "sys" ]; then
            mount --make-private /sys/fs/cgroup
        fi
        mount --make-private --rbind /$d $ROOT/$d
    fi
done

/usr/sbin/apkd-mount:

if [[ "$CMD" == "apkd-umount" ]]; then
    /bin/umount "$MOUNTDIR"
else # apkd-mount
    if [ ! -d "$MOUNTDIR" ]; then
        mkdir -p "$MOUNTDIR"
    fi
    # On tablet and other non-btrfs devices, do homeification
    DATADIR="/home/.android/data"
    if [ ! -d "$DATADIR" ]; then
        # On phone and btrfs devices, use /data directly
        DATADIR="/data"
    fi
#original:   /bin/mount --bind "$DATADIR" "$MOUNTDIR"
    /bin/mount --rbind "$DATADIR" "$MOUNTDIR"
fi

The "apkd-mount"is new in 1.1.9.28 and does the "data" part, that was done in older versions in "alien_setup_chroot.sh".

Now reboot your device and check with df -h that home folder and android storage is mounted to SD card:

Filesystem            Size  Used Avail Use% Mounted on
rootfs                 14G  2,3G   11G  17% /
/dev/mmcblk0p28        14G  2,3G   11G  17% /
devtmpfs              404M   64K  404M   1% /dev
tmpfs                 405M  464K  405M   1% /dev/shm
tmpfs                 405M   30M  375M   8% /run
tmpfs                 405M     0  405M   0% /sys/fs/cgroup
tmpfs                 405M  8,0K  405M   1% /tmp
/dev/mmcblk0p19       7,9M  4,1M  3,9M  52% /drm
/dev/mmcblk0p18        64M   45M   20M  70% /firmware
/dev/mmcblk0p28        14G  2,3G   11G  17% /home
/dev/mmcblk0p25       7,9M  4,2M  3,8M  53% /persist
/dev/mmcblk0p9         48M  8,5M   39M  18% /var/systemlog
tmpfs                 405M     0  405M   0% /mnt/asec
tmpfs                 405M     0  405M   0% /mnt/obb
/dev/mmcblk1p1         59G   25G   31G  45% /mnt/sd
/dev/mmcblk1p1         59G   25G   31G  45% /home/nemo
/dev/mmcblk1p1         59G   25G   31G  45% /data/media
/dev/mmcblk0p28        14G  2,3G   11G  17% /opt/alien/data
/dev/mmcblk1p1         59G   25G   31G  45% /opt/alien/data/media
/dev/mmcblk0p28        14G  2,3G   11G  17% /opt/alien/bin
/dev/mmcblk0p28        14G  2,3G   11G  17% /opt/alien/sbin
/dev/mmcblk0p28        14G  2,3G   11G  17% /opt/alien/lib
/dev/mmcblk0p28        14G  2,3G   11G  17% /opt/alien/usr
/dev/mmcblk0p28        14G  2,3G   11G  17% /opt/alien/var
/dev/mmcblk0p28        14G  2,3G   11G  17% /opt/alien/etc
tmpfs                 405M  8,0K  405M   1% /opt/alien/tmp
/dev/mmcblk0p28        14G  2,3G   11G  17% /opt/alien/vendor
devtmpfs              404M   64K  404M   1% /opt/alien/dev
tmpfs                 405M  464K  405M   1% /opt/alien/dev/shm
tmpfs                 405M     0  405M   0% /opt/alien/sys/fs/cgroup
tmpfs                 405M   30M  375M   8% /opt/alien/run
/dev/mmcblk0p28        14G  2,3G   11G  17% /opt/alien/media
/dev/mmcblk0p28        14G  2,3G   11G  17% /opt/alien/home
/dev/mmcblk1p1         59G   25G   31G  45% /opt/alien/home/nemo
/dev/mmcblk0p28        14G  2,3G   11G  17% /opt/alien/system_jolla
/dev/fuse              59G   25G   31G  45% /opt/alien/home/nemo/android_storage
/dev/fuse              59G   25G   31G  45% /mnt/sd/.home/android_storage
/dev/fuse              59G   25G   31G  45% /home/nemo/android_storage

you do it at your own risk, carefuly. On mistakes you have to know, how to work with recovery mode.

This works great now. Thank you alot