[Moto G Q&A, Help & Troubleshooting] empty4u:
I guess the internal storage ist broken

recovery.log:

Lösche Daten, aber verschone internen Speicher...

I:skipped '/data/media'

I:skipped '/data/misc/vold'

I:Unable to unlink '/data/data/com.google.android.gms/snet/leveldb/snet_sb_blacklist_4/LOG': I/O error

I:Unable to unlink '/data/data/com.google.android.gms/snet/leveldb/snet_sb_blacklist_4/000003.log': I/O error

I:Unable to unlink '/data/data/com.google.android.gms/snet/leveldb/snet_sb_blacklist_4/CURRENT': I/O error

I:skipped '/data/lost+found'

I:skipped '/data/system/storage.xml'

I:skipped '/data/.layout_version'

Abgeschlossen.

I:sending message to add 65537 '/data/media/0' 'Interner Speicher'

I:Message sent, add storage ID: 65537 '/data/media/0'

Partitions-Informationen werden aktualisiert...

I:[MTP] mtppipe add storage 65537 '/data/media/0'

I:[MTP] MtpStorage id: 65537 path: /data/media/0

E:[MTP] MtpServer::addStorage Storage for storage ID 65537 already exists.

Fehler beim Öffnen: '/data/data/com.google.android.gms/snet/leveldb/snet_sb_blacklist_4/LOG' (I/O error)

I:Real error: Unable to stat '/data/data/com.google.android.gms/snet/leveldb/snet_sb_blacklist_4/LOG'

Fehler beim Öffnen: '/data/data/com.google.android.gms/snet/leveldb/snet_sb_blacklist_4/000003.log' (I/O error)

I:Real error: Unable to stat '/data/data/com.google.android.gms/snet/leveldb/snet_sb_blacklist_4/000003.log'

Fehler beim Öffnen: '/data/data/com.google.android.gms/snet/leveldb/snet_sb_blacklist_4/CURRENT' (I/O error)

I:Real error: Unable to stat '/data/data/com.google.android.gms/snet/leveldb/snet_sb_blacklist_4/CURRENT'

I:Data backup size is 0MB, free: 5065MB.

dmesg.txt

<6>[ 1861.924453,0] sdhci: ===========================================

<6>[ 1861.924644,0] mmc0: bytes to transfer: 4096 transferred: 0

<3>[ 1861.928880,0] mmcblk0: error -110 sending stop command, original cmd response 0x900, card status 0x480900

<3>[ 1861.929119,0] mmcblk0: error -110 transferring data, sector 3679872, nr 8, cmd response 0x900, card status 0x0

<4>[ 1861.929346,0] blk_update_request: 53 callbacks suppressed

<3>[ 1861.929458,0] end_request: I/O error, dev mmcblk0, sector 3679872

<3>[ 1861.929686,0] end_request: I/O error, dev mmcblk0, sector 3679912

<3>[ 1861.929810,0] end_request: I/O error, dev mmcblk0, sector 3679928

<3>[ 1861.930016,0] end_request: I/O error, dev mmcblk0, sector 3679968

<3>[ 1861.930139,0] end_request: I/O error, dev mmcblk0, sector 3679984

<3>[ 1861.930343,0] end_request: I/O error, dev mmcblk0, sector 3680000

<3>[ 1861.930548,0] end_request: I/O error, dev mmcblk0, sector 3680024

<3>[ 1861.930672,0] end_request: I/O error, dev mmcblk0, sector 3680072

<3>[ 1861.930874,0] end_request: I/O error, dev mmcblk0, sector 3680088

<3>[ 1861.930996,0] end_request: I/O error, dev mmcblk0, sector 3680104

<6>[ 1869.941525,0] mmc0: waiting on long transfer (0 of 4096 blocks)

<3>[ 1877.961522,0] mmc0: Timeout waiting for hardware interrupt.

<6>[ 1877.961734,0] sdhci: =========== REGISTER DUMP (mmc0)===========

<6>[ 1877.961848,0] sdhci: Sys addr: 0xa0000008 | Version: 0x00003802

<6>[ 1877.962039,0] sdhci: Blk size: 0x00007200 | Blk cnt: 0x00000008

<6>[ 1877.962150,0] sdhci: Argument: 0x00382a98 | Trn mode: 0x0000002b

<6>[ 1877.962342,0] sdhci: Present: 0x01f80000 | Host ctl: 0x00000035

<6>[ 1877.962453,0] sdhci: Power: 0x0000000b | Blk gap: 0x00000000

<6>[ 1877.962646,0] sdhci: Wake-up: 0x00000000 | Clock: 0x00000007

<6>[ 1877.962757,0] sdhci: Timeout: 0x0000000a | Int stat: 0x00000000

<6>[ 1877.962948,0] sdhci: Int enab: 0x03ff800b | Sig enab: 0x03ff800b

<6>[ 1877.963059,0] sdhci: AC12 err: 0x00000000 | Slot int: 0x00000000

<6>[ 1877.963250,0] sdhci: Caps: 0x642dc8b2 | Caps_1: 0x00008004

<6>[ 1877.963441,0] sdhci: Cmd: 0x0000193a | Max curr: 0x00000000

<6>[ 1877.963551,0] sdhci: Resp 1: 0x00000000 | Resp 0: 0x00000900

<6>[ 1877.963741,0] sdhci: Resp 3: 0x00000900 | Resp 2: 0x00000000

<6>[ 1877.963851,0] sdhci: Host ctl2: 0x00000004

<6>[ 1877.964037,0] sdhci: ADMA Err: 0x00000007 | ADMA Ptr: 0x21300018

<6>[ 1877.964149,0] mmc0: clk: 52000000 clk-gated: 0 claimer: mmcqd/0 pwr: 10

<6>[ 1877.964341,0] mmc0: rpmstatus[pltfm](runtime-suspend:usage_count:disable_depth)(0:0:0)