Worrysome .app corruption

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Worrysome .app corruption

Post by zslg01 » Wed Jan 02, 2013 10:24 am

While copying a set of files and applications from internal hard drive to external USB Zevo pool, I noticed two application bundles on the destination drive were marked as corrupt (Get Info showed "damaged or incomplete' and icon was "do not pass" sign). I deleted these two apps and re-copied them (did a drag and drop in both instances). Again both were marked bad - with no error messages or indications. The apps on the source drive are fine and launch ok.
This is a worry as I have moved a number of critical files and apps to a 1TB Firewire volume.
Suggestions?
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Details please

Post by grahamperrin » Thu Jan 03, 2013 12:11 am

Maybe not corruption. I recall something like this from a year or so ago.

For the ZFS file system to which you copied, please:

Code: Select all
zfs get all nameofdataset


If you select an apparently bad .app and copy it from ZFS to HFS Plus, is the badness consistent?

Is anything unusual about the source? Is it a Time Machine backup volume?

Can you name the .app bundles?

For one of the affected apps, please:

Code: Select all
ls -@adehl /path/to/app/nameofapp.app


Code: Select all
xattr -l /path/to/app/nameofapp.app


Doubt of corruption is based partly on the reproducibility of the symptom with the two apps. I did once find an .app that could not run from ZFS but it was an edge case, and the workaround – if I recall correctly – was a copy from ZFS to HFS Plus.

Thanks
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