When an AutoPkg recipe fails to import a .dmg


If you ever have an AutoPkg recipe that seems to be working fine for weeks or even months and then suddenly fails with a message like this one:

Error in local.munki.FileZilla: Processor: MunkiImporter: Error: creating pkginfo for
/Users/USERNAME/Library/AutoPkg/Cache/local.munki.FileZilla/FileZilla.dmg failed: Could not mount
/Users/USERNAME/Library/AutoPkg/Cache/local.munki.FileZilla/FileZilla.dmg!
(doesn’t have to be FileZilla—could be anything), you may not see the .dmg is mounted in Disk Utility (or even diskutil list), but you can check to see if it’s a phantom mount by seeing if it shows up in the output of
hdiutil info
If it does show up there, then run
hdiutil detach /dev/diskFILLINLOCATION
and then re-run the recipe. Should be fine after that.

Acknowledgements: Thanks to Eric Holtam for the tip—just documenting it here for anyone else who may benefit from it.


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