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[Dustin Kirkland <dustin.kirkland@xxxxxxxxx>]

** Changed in: ecryptfs-utils (Ubuntu)
       Status: Incomplete => Invalid

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Encrypted home directory file Input/output error
https://bugs.launchpad.net/bugs/426272
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Status in “ecryptfs-utils” package in Ubuntu: Invalid

Bug description:
This is a fresh install of karmic koala alpha-5 (Ubuntu karmic (development branch)) on a new machine using the alternate install CCD (required LVM+software RAID).
The "encrypt home directory" option was selected during the install.  

Once complete I was unable to log in via GDM. This reported problems accessing the $HOME/.ICEauthority file.  
Logging in via the console was possible.  Attempts to read or modify (chown||chmod) the  .ICEauthority file as the user or  root (again from console) failed with "Input/output error".  Ultimately this was resolved by deleting then recreating (touch .ICEauthority) the file as root.

I have now encountered the same problem accessing files in the $HOME/.gnupg directory while trying to import keys.
A simple script which does an fopen()/fclose() on all files under $HOME when run as either the user or root returns:

Unable to open /home/djf/.compiz-gnomecompat
Unable to open /home/djf/.pulse-cookie
Unable to open /home/djf/gnupg/secring.gpg 
Unable to open /home/djf/gnupg/gpg.conf      
Unable to open /home/djf/gnupg/trustdb.gpg  
Unable to open /home/djf/gnupg/pubring.gpg
Unable to open /home/djf/.config/compiz/compizconfig/config
Unable to open /home/djf/.config/user-dirs.locale
Unable to open /home/djf/.dbus/session-bus/5cf1f2eb5de5eb7933fc8c964aa0e4c9-0
Unable to open /home/djf/.cache/compizconfig/cubeaddon.pb
Unable to open /home/djf/.cache/notify-osd.log
Unable to open /home/djf/.cache/event-sound-cache.tdb.5cf1f2eb5de5eb7933fc8c964aa0e4c9.x86_64-pc-linux-gnu
Unable to open /home/djf/.pulse/5cf1f2eb5de5eb7933fc8c964aa0e4c9-device-volumes.tdb
Unable to open /home/djf/.pulse/5cf1f2eb5de5eb7933fc8c964aa0e4c9-card-database.tdb
Unable to open /home/djf/.pulse/5cf1f2eb5de5eb7933fc8c964aa0e4c9-stream-volumes.tdb

All of these files are owned by the user in question:
djf@unicorn:~/bug$ ls -l /home/djf/.pulse-cookie
-rw------- 1 djf djf 12288 2009-09-07 10:42 /home/djf/.pulse-cookie

The files in gnupg were copied (cp $src $dest) from .gnupg
Between discovering problem .gnupg files and running the script they started to behave - possibly due to running software-properties-gkt being run in that interval (?).

As an example of the access error:
djf@unicorn:~$ cat /home/djf/.config/compiz/compizconfig/config
cat: /home/djf/.config/compiz/compizconfig/config: Input/output error

dmesg gains another of these messages for each failed access:
[87804.727437] Valid eCryptfs headers not found in file header region or xattr region
[87804.727441] 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

This may also explain why pulseaudio appears to be suffering (device manager says "connection refused",
hence no sources or sinks).

The machine has 2 1TB HDD configured as 3 x software raid 1:
/dev/md0 == /boot                                     (29.80 GB)    ext2
/dev/md1 == encrypted swap                    (29.80 GB)
/dev/md2 == LVM volume group vg00
    /dev/mapper/vg00-root00  == /             (29.80 GB)    ext4
    /dev/mapper/vg00-home00  == /home (29.80 GB)    ext4, user directories encrypted.
    /dev/mapper/vg00-snap00 == /snap     (29.80 GB)    ext4
    /dev/mapper/vg00-data00 == /data      (782.51 GB)   ext4

The encrypted home directory uses the default install, mount reports:
/home/djf/.Private on /home/djf type ecryptfs (ecryptfs_sig=XXXXXX,ecryptfs_fnek_sig=XXXXXX,ecryptfs_cipher=aes,ecryptfs_key_bytes=16)