Any one can tell me what I make round. I have cyanogenmod with one sdcard with 2 partitions the first is mount with ext4 and the second I try fat32 ext4 ext3 ...
I no found fuse.ko in the system but internal partition and storage is mount with fuse in /storage/....
I try to mount the second partition by many difference ways . Always is mount and show up
I copy files from internal memory or sdcard first partition to the second partition
But if I try to open the files I got permission errors . Very possible is a Selinux problem but I have in permissive mode
I look with rootexplorer and files a copy in the 2nd partition in the sdcard for the owner only can read or write
Any ideas how to make the correct mounts for the 2nd Partition on SD card
I make a simple script for make test that is the last configuration I make but still only the owner can read or write that means any app can't open the files if is not root
that is the configuration I use
#!/system/bin/sh
# Mount SD Card Ext4 Script
mkdir /storage/sdcard2
mount -r -w -o exec,dev,suid,rw -t ext4 /dev/block/vold/179:66 /storage/sdcard2
mount -r -w -o exec,dev,suid,rw -t ext4 /dev/block/mmcblk1p2 /storage/sdcard2
chown media_rw:media_rw /storage/sdcard2
chmod g+w /storage/sdcard2
ln -s /storage/sdcard2 /mnt/media_rw/sdcard2
ln -s /storage/sdcard2 /mnt/sdcard2
chown media_rw:media_rw /mnt/sdcard2
chmod g+w /mnt/sdcard2
Hi there,
I'm sorry but I can't find anything related to your question.
Please post that in the forum bellow for more answers from the experts:
> Android Development and Hacking > Android Q&A, Help & Troubleshooting
Good luck
Related
I want to know what clockworkmod did after refermatting
What device do I use
mkdir mnt/c
mkdir mnt/d
mou mount -o rw,remount -t ?????????????? /mntc
I'm hardly a command line unix user but without knowledge of the exact device
I'm never ever going to succeeed
PLEASE ANSWER I'm hoping for an echo of the mounted file system
ext 3 /ext 4
PLease Help
Having encrypted /data, I'd been interested in encrypting the SD card, either in full, or a full partition. As a new poster to xda, posting without citing reference links does prove a bit more challenging, but here goes:
Given an HTC Sensation, rooted, with Cyanogenmod 9.1 (ICS), and Clockwork Recovery, I partitioned (thru Clockwork) the SD card into FAT32, ext, and swap. Your milage may vary on the next step, but using Fedora, I accessed the SD card, deleted the ext partition, and recreated as an encrypted partition, type ext4. (read up on cryptsetup for alternative ways to create this) For the sake of this post, we'll use the password, "ChangeMe".
I installed LUKS Manager from Google Play, which provides lm.cryptsetup, a renamed binary of Guardian Project's cryptsetup. I didn't use LUKS Manager's implementation of creating encrypted folders, instead, the whole sd-ext partition has been encrypted.
To mount the device at startup, I have the script 99sd-extLUKinit, located at /system/etc/init.d/
#!/system/bin/sh
# Not quite sure what these do, but kept them in
sync;
setprop lk.filesystem.ready 1;
# Remount the root file system to allow changes
mount -o remount,rw rootfs /
# Create the mount point and create a symbolic link
mkdir /mnt/sd-ext
ln -s /mnt/sd-ext /sd-ext
# Decrypt the SD card via cryptsetup, device resides on /dev/block/sd-ext
# Hopefully prompt user for password, but for now, echoed in
echo ChangeMe | lm.cryptsetup luksOpen /dev/block/mmcblk1p2 sd-ext
# Clean errors
e2fsck -y /dev/mapper/sd-ext
# Mount the SD Card via cryptsetup block device
mount -t ext4 -o noatime,nodiratime,barrier=1 /dev/mapper/sd-ext /mnt/sd-ext/
# Remount the root file system to prevent changes
mount -o remount,ro rootfs /
Once verified that the system will automount the encrypted ext4 /mnt/sd-ext partition:
ls /sd-ext
should return with lost & found directory
I moved /data/app and /data/app-private to the encrypted partition:
cp -a /data/app /sd-ext/app
rm -r /data/app
ln -s /sd-ext/app /data/app
cp -a /data/app-private /sd-ext/app-private
rm -r /data/app-private
ln -s /sd-ext/app-private /sd-ext/app-private
I have a HTC One M8. I have a sdcard with 2 partitions. /dev/block/mmcblk1p1 is vfat, /dev/block/mmcblk1p2 is ext4. I've used this to mount the sdcard:
Code:
mount -o remount,rw /
mkdir /storage/sdcard3
mount -o remount,ro /
mount -t ext4 /dev/block/mmcblk1p2 /storage/sdcard3
mkdir /storage/sdcard0/user-data
sdcard /storage/sdcard3 /storage/sdcard0/user-data 1023 1023 &
As root in a terminal, I can read and write to /storage/sdcard0/user-data no problem, however none of the apps can see it, not even file managers with root access. Maybe there is an extra step involved for KitKat? I'm also using the HandleExternalStorage Xposed module, which at least helps with the vfat partition.
Bump.
Note: This is probably only helpful for people with a computer science or linux hacking background!
We all know the single biggest issue with this phone is the lack of internal memory for apps and app data. The internal partitioning looks like this:
/system 1 GB
/data 2 GB
sdcard0 4 GB -- lots of space that competes with external SD! Let's use it!
other stuff (tmp, boot, etc.) 1 GB
persona78 provided an excellent mod of the (most recent) stock ROM that gives you root and a working init.d:
https://forum.xda-developers.com/ascend-g6/general/root-upadtekinguser-zip-modded-extras-t3349679
This mod also enables to move apps to a new ext4 partition on the external SD card. My experience however is:
dalvik cache and app data (e.g. some social media apps caching videos etc.) will still fill up the /data partition
access to external SD, even a fast one, is much slower
if you also move app data to external SD, the phone becomes unusable (slow)
So I propose the following solution, successfully tested on my phone, that will use just short of 6 GB on the internal SD card for dalvik cache, apps and their data!
This is how to do it:
backup everything important from the phone
unlock bootloader and install the ROM from persona78, linked above. Make sure root works, adb works.
connect to a Linux machine via USB that has adb installed
select mass storage mode on the phone in the USB settings
Now in mass storage mode do the following:
the phone exposes a block device without partitioning (e.g. /dev/sdb) and a block device with partitioning (e.g. /dev/sdc, /dev/sdc1). the former is the internal storage (sdcard0), the latter external storage (sdcard1).
mount /dev/sdb to /mnt/internal and /dev/sdc1 to /mnt/external
rsync -a /mnt/internal/ /mnt/external/
umount /dev/sdb
mkfs.vfat -C /var/tmp/vfat 256000
dd if=/var/tmp/vfat of=/dev/sdb bs=1M (you can delete /var/tmp/vfat after this)
losetup /dev/loop0 /dev/sdb -o 262144000
mkfs.ext4 /dev/loop0
On the phone you can now change back the USB mode to MTP (but not to charge only -- a data mode is needed for adb to work).
Now run adb shell and obtain root in the shell via 'su'. In the adb root shell:
mkdir -p /data/sdext4
losetup -o 262144000 /dev/block/loop7 /dev/block/mmcblk0p25
mount -t ext4 /dev/block/loop7 /data/sdext4
in /data/sdext4, create two directories called 'data-app' and 'data-data'. Give them the respective permissions and group,ownership as with the current /data/app and /data/data directories.
cp -a /data/app/* /data/sdext4/data-app
cp -a /data/data/* /data/sdext4/data-data
rm -r /data/app/* /data/data/*
mount -o remount,rw /system
edit /etc/init.d/01AOBoot as follows
Content of /etc/init.d/01AOBoot:
#!/system/bin/sh
CONCURRENCY=makefile
# mount sdext4
losetup -o 262144000 /dev/block/loop7 /dev/block/mmcblk0p25
mount -t ext4 /dev/block/loop7 /data/sdext4
mount -o bind /data/sdext4/data-app /data/app
mount -o bind /data/sdext4/data-data /data/data
# change dalvik permissions
chmod 773 /data/dalvik-cache
# change scaling_min_freq to 300000
echo 300000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
Click to expand...
Click to collapse
Now run adb reboot. It is done.
Explanation: Apps and their data need to reside on an ext4 partition. sdcard0 however has to be vfat, otherwise the phone will always complain and ask to format it. We can also not change the internal storage partitioning. Therefore we simply hide a large ext4 filesystem behind a small vfat filesystem on the same partition. Apps will startup fast and run fast, and all media files can be put on the external sd card.
I know this is very exotic to most, but maybe there are a few people like me with the necessary background who would like to follow my example. Happy hacking!
Are you kidding me?
This is a great work that you did. My phone keeps complaining about low disk space but I was gonna use parted to resize the data partition.
Hello.
I just started messing around with my Z3 and so far followed the tutorial here https://forum.xda-developers.com/z3-compact/general/recovery-root-mm-575-lb-t3418714 to install root and recovery without unlocking the bootloader. Also took the chance to make a backup of the ta partition.
My objective was being able to mount an external ext4 partition so I could move game data and free some internal space. I believe the official kernel doesn't support init.d so I searched and found a script that worked and added it to the bottom of init.qcom.post_boot.sh.
Code:
### Init.d support ###
busybox run-parts /system/etc/init.d/
It's a very simple script that creates /sd-ext folder if it's missing and mounts /dev/block/mmcblk1p2 there
Code:
#!/system/bin/sh
#
# mounts ext partition from sd card
if [ ! -d /sd-ext ];
then
mount -o rw,remount /
install -m 774 -o 1000 -g 1000 -d /sd-ext
mount -o ro,remount /
fi
if [ ! -d /sd-ext ];
then
echo sd-ext not created >> /data/Test.log
else
mount -o rw -t ext4 /dev/block/mmcblk1p2 /sd-ext
fi
It was something that I got on some forum plus some trial and error and some Linux knowledge I have.
It seemed to work. The directory was created and mounted and I was able to move the games there using Titanium Backup.
But after I rebooted, the folder was there and all the data, but the apps don't show up on the apps list. I have to reinstall them...
Am I missing something? How can I fix this?