Level 3

816 points

fs tree invalid on APFS

hello,

while doing a first-aid check on my macOS APFS volume, I get the following message in the details as it scans the volume. it is

Checking the fsroot tree.

error: drec_val object (oid 0x51b169): invalid type (0)

fsroot tree is invalid.

The volume /dev/rdisk1s1 could not be verified completely.

can anyone who's knowledgeable with this type of error provide some info about what this error is, whether it's a concern or not ?

MacBook Pro (Retina, 15-inch, Late 2013), macOS Sierra (10.12.4), 2.0 GHz/16GB/256GB

Posted on Oct 1, 2017 3:41 PM

Top-ranking reply

Drewbster

Level 1

4 points

Posted on Dec 14, 2017 10:57 AM

Update:

After installing the latest update (10.13.2) on Dec. 11, the error has now been fixed on my MBP (2016). When running First Aid in Disk Utility, I now get the following report:

Verifying file system.

Volume could not be unmounted.

Using live mode.

Performing fsck_apfs -n -l -x /dev/rdisk1s1

Checking volume.

Checking the container superblock.

Checking the EFI jumpstart record.

Checking the space manager.

Checking the object map.

Checking the APFS volume superblock.

Checking the object map.

Checking the fsroot tree.

Checking the snapshot metadata tree.

Checking the extent ref tree.

Checking the snapshots.

Verifying allocated space.

The volume /dev/rdisk1s1 appears to be OK.

File system check exit code is 0.

Restoring the original state found as mounted.

Operation successful.

Hope the 10.13.2 works for everybody else.

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32 replies

Bartdeus

Level 1

4 points

Dec 1, 2017 12:57 PM in response to mentzos

Same configuration, same problem

MackBook Pro 13 late 2010, Samsung SSD 250Go

fsroot tree error, and system is taking all available space, letting me 1Go free space (on 250Go, 230Go taken by system)

I've try to make big file with mkfile, the system allowed it, but when i delete them, freed space goes back to system.

No more disk capacity to make updates too

zero7404 Author

Level 3

816 points

Dec 4, 2017 2:50 PM in response to preak

ive not had extreme issues so far, though the problem shouldnt be ignored, sounds like others have lost functionality thats significant.

im surprised apple has not already fixed this. puts into question whether its been reported or other.

i dont like the idea of having disk related issues if something goes wrong, i could lose my installation. even with frequent backups of my data, my needs for using a computer right now cannot afford the downtime i’d encounter from a failure.

zero7404 Author

Level 3

816 points

Dec 14, 2017 6:15 AM in response to Bartdeus

not so sure of this, i believe some ppl have reported this with a fresh/clean install of 10.13.

perhaps there are issues with the file system/APFS model in which these errors are occurring.

i know little about how APFS is structured and works, so i don't know what contributes to this error and it's severity.

zero7404 Author

Level 3

816 points

Jan 26, 2018 4:44 AM in response to jannymark

i’ll give this method a try. going to do a time machine backup today, then restore the snapshot and run first aid on the macOS apfs volume to see if the error disappears.

thanks for posting your findings.

zero7404 Author

Level 3

816 points

Oct 8, 2017 6:04 AM in response to zero7404

i'm wondering what this error actually means, whether it indicates there is something wrong with the file system or the ssd .... ?

virgosun

Level 1

4 points

Oct 10, 2017 12:22 AM in response to zero7404

same here, unable to boot

Bonsterg

Level 1

10 points

Nov 23, 2017 1:34 PM in response to bonimac

Running into this problem as well. Has anyone found a fix other than reformatting the disk as per swissmacuser?

preak

Level 1

4 points

Dec 4, 2017 7:26 AM in response to Drewbster

same issue here since root fix. Also I can no longer explore other machines on our network. Very frustrating.

tbirdvet

Level 6

17,223 points

Dec 4, 2017 1:25 PM in response to bonimac

Running first aid on top level drive will only take about 2s, very fast even with or without error message. Mine takes about 2s with no errors reported.

leroydouglas

Level 10

199,632 points

Dec 13, 2017 10:53 AM in response to towoode

towoode wrote:

so what is bug 33949235 and what is its status?

You can poke around yourself: Open Radar

however the search function is most unrewarding.

zero7404 Author

Level 3

816 points

Dec 13, 2017 11:43 AM in response to leroydouglas

anyone know why this issue exists in the first place, what’s causing it ?

Bonsterg

Level 1

10 points

Dec 14, 2017 11:22 AM in response to Drewbster

Worked for me as well. It looks like its fixed.

zero7404 Author

Level 3

816 points

Dec 14, 2017 12:02 PM in response to Bonsterg

not for me, i am on 10.13.2 as well .....

Screen Shot 2017-12-14 at 14.58.40.jpg - Google Drive

Jan 24, 2018 7:31 AM in response to zero7404

Just upgraded to 10.13.3 and I have the issue now. Deleted over 50GB and disk is reporting less than 4GB free. Non-Apple SSD. So frustrating.

zero7404 Author

Level 3

816 points

Jan 25, 2018 3:08 PM in response to jannymark

that's interesting. from what instance in time was your backup ? in particular, was it a backup from the same High Sierra version of macOS ?

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fs tree invalid on APFS