Found orphan dstream id object

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Hanjié Author

Level 1

15 points

Found orphan dstream id object

I ran a first aid and the message shown

......

warning: found orphan dstream id object (id 46404197, refcnt 1)

warning: found orphan dstream id object (id 46404199, refcnt 1)

warning: found orphan dstream id object (id 46432429, refcnt 1)

too many warnings generated; suppressing subsequent ones.

Verifying allocated space.

Performing deferred repairs.

The volume /dev/rdisk1s1 appears to be OK.

File system check exit code is 0.

Restoring the original state found as mounted.

Operation successful.

I ran the first aid again and these warning messages were still there, nothing fixed.

Does anyone know what it means and how to fix it?

Thanks

MacBook Air, macOS Mojave (10.14)

Posted on Sep 29, 2018 1:46 AM

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Answer 1

Top-ranking reply

Sub-dude

Level 1

16 points

Oct 13, 2018 3:15 PM in response to Hanjié

I found the same issue after running Disk Utility (DU) on my internal SSD on my Mac mini while troubleshooting a persistent Time Machine (TM) failure to make backup copies. I solved the problem and Time Machine worked well again. The problem was with corrupted TM snapshots which needed to be deleted on my internal SSD.

I’m running a Mac mini (Late 2012) with macOS High Sierra v 10.13.6 using TM to make automatic backups of my main drive, internal SSD, to an external USB3 hard drive always attached. About two weeks ago, TM ceased to complete backups reporting a failure to copy. TM suggested I run DU First Aid on my external HD to troubleshoot the problem. First Aid showed my external HD to be fine, and I had lots of room left on the drive.

After a bit of research online I ran DU First Aid on my internal SSD which reported I had 5 TM snapshots stored, of which the first two had many “orphan dstream id object”s, the last 3 snapshots reported OK. More First Aid runs showed these snapshots persisted corrupted and my TM still refused to function. More online research illuminated a way to delete a snapshot using Terminal.

See this macworld.com article:

https://www.macworld.com/article/3260635/macs/how-to-delete-time-machine-snapsho ts-on-your-mac.html.

Using this method, I deleted the first two corrupted snapshots from my internal SSD. TM, and mini performed flawlessly afterwards.

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Answer 2

caozj

Level 1

8 points

Oct 22, 2018 8:00 PM in response to Hanjié

I had the same issue when troubleshooting random "wake from sleep" failures. I tried running first aid in recovery mode and the problem is gone.

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Answer 3

Oct 30, 2018 12:35 PM in response to caozj

Running First Aid in recovery mode did the trick for me, thanks.

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Answer 4

Hanjié Author

Level 1

15 points

Oct 17, 2018 8:41 PM in response to Sub-dude

Hi Sub-dude, I didn't have your luck, unfortunately. My first Disk Utility scan report is as the following:

Checking snapshot 1 of 4.

warning: found orphan dstream id object (id 37524938, refcnt 1)

warning: snapshot dstream corruptions are not repaired; they'll go away once the snapshot is deleted

warning: found orphan dstream id object (id 37524939, refcnt 1)

...

too many warnings generated; suppressing subsequent ones.

Checking snapshot 2 of 4.

...

From the report, I assumed that the corrupted TM snapshot was the first one. So I did exactly what you've found in that webpage and deleted snapshot 1. I ran a Disk Utility scan again, the only difference was I got one snapshots less, 3 snapshots, but the problem was still there. So I deleted all snapshots in my internal SSD then ran a Disk Utility scan. The report showed no snapshot but the orphan stream id object orphan issue didn't go away.

I am happy it worked for you and I am still hopping to get some helps here.

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Found orphan dstream id object

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