libfsapfs_volume_superblock_read_data: invalid object type: 0x4000000d.

[rosubz]

libfsapfs_volume_superblock_read_data: invalid object type: 0x4000000d.

This is a libfsapfs safe guard indicating the data it is reading is not a valid volume superblock
But it looks likes a file system root block instead (also see https://github.com/libyal/libfsapfs/blob/master/documentation/Apple%20File%20System%20(APFS).asciidoc#44-object-types)

Do you think the drive is somehow corrupted?

Based on your description so far, is very likely or maybe the container is in a dirty state (which might not be handled properly yet). libfsapfs has a debug output build option which can generated tons of data format information. Also see: https://github.com/libyal/libfsapfs/wiki/Troubleshooting#verbose-and-debug-output

Could you provide me the debug output of:

sudo /usr/local/bin/fsapfsinfo -v -p <password> /dev/disk3 2> debug.log

Originally posted by @joachimmetz in #15 (comment)

[rosubz]

debug.log

[rosubz]

❯ diskutil apfs list
APFS Container (1 found)
|
+-- Container disk1 5A292071-F699-4AE3-A092-1C0693F07333
====================================================
APFS Container Reference: disk1
Size (Capacity Ceiling): 7747362570240 B (7.7 TB)
Capacity In Use By Volumes: 3336668012544 B (3.3 TB) (43.1% used)
Capacity Not Allocated: 4410694557696 B (4.4 TB) (56.9% free)
|
+-< Physical Store disk0s2 FBC82218-C746-4D64-9A13-31421A3BBD7A
| -----------------------------------------------------------
| APFS Physical Store Disk: disk0s2
| Size: 7747362570240 B (7.7 TB)
|
+-> Volume disk1s1 3363FB9B-2FDC-4137-9838-F0227926E06B
| ---------------------------------------------------
| APFS Volume Disk (Role): disk1s1 (System)
| Name: None (Case-insensitive)
| Mount Point: /
| Capacity Consumed: 11257712640 B (11.3 GB)
| FileVault: No (Encrypted at rest)
|
+-> Volume disk1s2 CA980B63-E8BF-4D8D-98F4-1B5810D9247C
| ---------------------------------------------------
| APFS Volume Disk (Role): disk1s2 (Data)
| Name: Macintosh HD - Data (Case-insensitive)
| Mount Point: /System/Volumes/Data
| Capacity Consumed: 2039413399552 B (2.0 TB)
| FileVault: No (Encrypted at rest)
|
+-> Volume disk1s3 87A49CFE-502F-40FA-944E-6C0D9348CDB0
| ---------------------------------------------------
| APFS Volume Disk (Role): disk1s3 (Preboot)
| Name: Preboot (Case-insensitive)
| Mount Point: Not Mounted
| Capacity Consumed: 484720640 B (484.7 MB)
| FileVault: No
|
+-> Volume disk1s4 E14F46C6-C305-4D89-9192-2A850874BCEA
| ---------------------------------------------------
| APFS Volume Disk (Role): disk1s4 (Recovery)
| Name: Recovery (Case-insensitive)
| Mount Point: Not Mounted
| Capacity Consumed: 1142829056 B (1.1 GB)
| FileVault: No
|
+-> Volume disk1s5 2AF3750A-64BF-403A-A50F-62334F382E11
| ---------------------------------------------------
| APFS Volume Disk (Role): disk1s5 (VM)
| Name: VM (Case-insensitive)
| Mount Point: /private/var/vm
| Capacity Consumed: 1073762304 B (1.1 GB)
| FileVault: No
|
+-> Volume disk1s6 CC76966A-99FB-41C0-8D42-BFE27F331311
| ---------------------------------------------------
| APFS Volume Disk (Role): disk1s6 (No specific role)
| Name: Develop - Data (Case-insensitive)
| Mount Point: /Volumes/Develop - Data
| Capacity Consumed: 45056 B (45.1 KB)
| FileVault: No (Encrypted at rest)
|
+-> Volume disk1s7 63F51DF3-0D28-4D76-A2A3-E1F3214CD3AF
| ---------------------------------------------------
| APFS Volume Disk (Role): disk1s7 (System)
| Name: ERROR -69808
| Mount Point: Not Mounted
| Capacity Consumed: 15052296192 B (15.1 GB)
| FileVault: No
|
+-> Volume disk1s8 9FEE1817-9C2F-4BA6-B5DD-DA62E6EF6CF4
| ---------------------------------------------------
| APFS Volume Disk (Role): disk1s8 (Update)
| Name: Update (Case-insensitive)
| Mount Point: /Volumes/Update
| Capacity Consumed: 3690496 B (3.7 MB)
| FileVault: No
|
+-> Volume disk1s9 E43F65F7-6CE7-48DB-9602-4938E6AC3ABA
| ---------------------------------------------------
| APFS Volume Disk (Role): disk1s9 (Data)
| Name: H - Data (Case-insensitive)
| Mount Point: /Volumes/H - Data
| Capacity Consumed: 1267405152256 B (1.3 TB)
| FileVault: Yes (Unlocked)
|
+-> Volume disk1s10 F61C6DF6-66DF-4B86-B94E-F9549639D4BA
----------------------------------------------------
APFS Volume Disk (Role): disk1s10 (No specific role)
Name: bak (Case-insensitive)
Mount Point: /Volumes/bak
Capacity Consumed: 1314816 B (1.3 MB)
FileVault: No (Encrypted at rest)

[joachimmetz]

0x4000000d appears to be used in a (logical) volume header of a snapshot. Snapshots are not yet supported