*** This bug is a duplicate of bug 509180 ***
    https://bugs.launchpad.net/bugs/509180


I seem to be getting this error also. 

Apr  1 20:00:34 ardbeg kernel: [ 6256.103223] Either the lower file is
not in a valid eCryptfs format, or the key could not be retrieved.
Plaintext passthrough mode is not enabled; returning -EIO


I can provoke it in the clear filesystem like so ...

find . -type f -exec cat {} \; > /dev/null

which results in...

cat: ./mail/misc/77735: Input/output error
cat: ./mail/misc/77811: Input/output error
cat: ./mail/misc/77829: Input/output error


I first noticed it because I use unison to sync these files. The files are zero 
length in the clear filesystem (and shouldn't be). I presume that are zero 
length in the encrypted. I certainly have zero length files in the encrypted 
but can't be sure they are the same, of course. 

This is on 10.10. It's not a clean installation, but it is a clean user
space after my initial attempts to migrate the file system to encrypted
failed and broke my account.

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https://bugs.launchpad.net/bugs/372014

Title:
  errors in dmesg

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