3

My OnePlus 3 is in a pretty weird situation. I deleted the contents of /sdcard on an adb shell while my phone was running TWRP via:

# rm -r /sdcard*

I also deleted the hidden files files but they are in a different tar ball than the non-hidden ones and are already restored. For this, I pushed their tar file to my phone and extracted it in an adb shell. However, pushing the substantially bigger tar ball of non-hidden files over to my phone failed.

Upon investigation, I found that apparently /dev/block/dm-0 is mounted both in /data and in /sdcard:

~ # df -h
Filesystem                Size      Used Available Use% Mounted on
tmpfs                     2.8G     24.0K      2.8G   0% /dev
tmpfs                     2.8G     24.0K      2.8G   0% /tmp
/dev/block/sda3         248.0M    272.0K    242.6M   0% /cache
/dev/block/dm-0          52.7G     36.9G     15.7G  70% /data
/dev/block/dm-0          52.7G     36.9G     15.7G  70% /sdcard

The contents of /sdcard don't make up for 36.9 GiB. It's only TWRP (a few GB) and the hidden folders (about 1 MB).

/sdcard # ls -la
__bionic_open_tzdata: couldn't find any tzdata when looking for localtime!
__bionic_open_tzdata: couldn't find any tzdata when looking for GMT!
__bionic_open_tzdata: couldn't find any tzdata when looking for posixrules!
drwxrwx---    5 media_rw media_rw      4096 Aug  1  1970 .
drwxrwxrwt   23 root     root           720 Aug  1  1970 ..
drwxrwxr-x    2 media_rw media_rw      4096 Jan  6 00:22 .AzPlugin
-rw-rw-r--    1 media_rw media_rw         5 Sep  1 14:22 .appodeal
drwxrwxr-x    6 media_rw media_rw      4096 Jan  6 00:22 .estrongs
-rw-rw-r--    1 media_rw media_rw        72 Oct 19 16:06 .userReturn
drwxrwxrwx    2 root     root          4096 Aug  1  1970 TWRP

The weird thing is that /data – even though the same device is mounted to it – contains a lot of files and folders /sdcard doesn't:

/data # ls -la
__bionic_open_tzdata: couldn't find any tzdata when looking for localtime!
__bionic_open_tzdata: couldn't find any tzdata when looking for GMT!
__bionic_open_tzdata: couldn't find any tzdata when looking for posixrules!
drwxrwx--x   38 system   system        4096 Jan  5 22:18 .
drwxrwxrwt   23 root     root           720 Aug  1  1970 ..
-rw-------    1 root     root             2 Aug  1  1970 .layout_version
drwx------    2 root     root          4096 Aug  1  1970 adb
drwxrwx--x    2 system   system        4096 Aug  1  1970 anr
drwxrwx--x  107 system   system        4096 Jan  5 23:10 app
drwx------    2 root     root          4096 Aug  1  1970 app-asec
drwxrwx--x    2 system   system        4096 Aug  1  1970 app-lib
drwxrwx--x    2 system   system        4096 Aug  1  1970 app-private
drwxrwx---    3 media    audio         4096 Jan  5 22:13 audio
drwx------    5 system   system        4096 Jan  5 23:10 backup
drwxr-xr-x    2 shell    shell         4096 Aug  1  1970 bootchart
lrwxrwxrwx    1 root     root            45 Jan  5 22:13 bugreports -> /data/data/com.android.shell/files/bugreports
drwxrwx--x    2 system   system        4096 Jan  5 22:13 connectivity
drwxrwx--x    5 root     root          4096 Jan  5 22:15 dalvik-cache
drwxrwx--x  245 system   system       12288 Jan  5 23:10 data
drwxrwx--x    3 system   system        4096 Jan  5 22:13 dpm
drwxrwx---    3 drm      drm           4096 Jan  5 22:13 drm
drwxrwx--x    2 system   system        4096 Aug  1  1970 fota
drwxrwx---    2 system   system        4096 Jan  5 22:18 fpc
drwxrwx---    4 system   system        4096 Jan  5 22:13 fpc_images
drwxrwx---    2 system   wifi          4096 Aug  1  1970 hostapd
drwxr-x--x    3 root     root          4096 Jan  5 22:13 local
drwxrwx---    2 root     root          4096 Jan  5 16:08 lost+found
drwxrwx---   35 media_rw media_rw      4096 Aug  1  1970 media
drwxrwx---    3 mediadrm mediadrm      4096 Jan  5 22:13 mediadrm
drwxrwx--t   39 system   misc          4096 Jan  5 22:13 misc
drwxr-xr-x    3 nfc      nfc           4096 Jan  5 22:18 nfc
drwxrwx--x    2 radio    radio         4096 Jan  5 22:13 oemnvitems
drwx------    2 root     root          4096 Jan  6 00:19 property
drwxrwx--x    2 system   system        4096 Aug  1  1970 resource-cache
drwx--x--x    2 system   system        4096 Aug  1  1970 security
drwxr-xr-x    2 system   system        4096 Aug  1  1970 shared
drwx------    2 system   system        4096 Aug  1  1970 ss
-rw-------    1 root     root      11236116 Aug  1  1970 stock_boot_fbcb35a6c03d1c2da5dbb1784d5642fcfda6b4cd.img.gz
-rw-r--r--    1 root     root     100663296 Jan  5 22:15 su.img
drwxrwxr-x   18 system   system        4096 Jan  6 00:19 system
drwx------    2 system   system        4096 Jan  5 22:18 theme
drwx------    2 system   system        4096 Jan  5 22:13 time
drwxrwx--x    6 system   system        4096 Jan  5 22:13 tombstones
drwx--x--x    2 system   system        4096 Jan  5 22:13 user
drwx------   12 system   system        4096 Jan  5 22:13 usf

Why is this?

When I looked for what took the storage space, I found that there are files which used to be on the (emulated) SD card but which I deleted (which is why /sdcard is so empty) before trying to push the tar ball over to my phone:

/data # du -h . | grep '[0-9\.]\+G'
4.3G    ./media/TWRP/BACKUPS/8b32aa5/2016-09-25--16-41-47
4.3G    ./media/TWRP/BACKUPS/8b32aa5
4.3G    ./media/TWRP/BACKUPS
4.3G    ./media/TWRP
4.0K    ./media/Android/data/com.google.android.GoogleCamera/files
8.0K    ./media/Android/data/com.google.android.GoogleCamera
2.7G    ./media/Download
1.3G    ./media/MEGA/MEGA Offline/Music
1.1G    ./media/MEGA/MEGA Offline/Documents/Uni/Modules
1.2G    ./media/MEGA/MEGA Offline/Documents/Uni
1.2G    ./media/MEGA/MEGA Offline/Documents
2.5G    ./media/MEGA/MEGA Offline
2.5G    ./media/MEGA
15.8M   ./media/Pictures/9GAG
1.4G    ./media/Pictures
1.8G    ./media/TitaniumBackup
32.0G   ./media
4.0K    ./data/com.qualcomm.qti.GBAHttpAuthentication.auth/cache
4.0K    ./data/com.qualcomm.qti.GBAHttpAuthentication.auth/code_cache
12.0K   ./data/com.qualcomm.qti.GBAHttpAuthentication.auth
4.0K    ./data/com.oneplus.GpioSwitch
4.0K    ./data/com.google.android.GoogleCamera
12.6M   ./app/com.google.android.GoogleCamera-1/lib/arm
12.6M   ./app/com.google.android.GoogleCamera-1/lib
12.2M   ./app/com.google.android.GoogleCamera-1/oat/arm
12.2M   ./app/com.google.android.GoogleCamera-1/oat
47.4M   ./app/com.google.android.GoogleCamera-1
3.8G    ./app
36.9G   .

What can I safely delete? Can I wipe "Data" in TWRP without apps malfunctioning? What happens when I delete the contents of /data/media? Are those hard links of the files I deleted on /sdcard?

I pushed that tar ball several times over to my phone, today, extracted it, deleted it, messed up, deleted the contents of /sdcard, and started over. However, this time, which thus far appeared to be the last time, such weird behavior occurred.

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