On Sat, Jun 18, 2016 at 1:32 PM, André Roth <neolynx@xxxxxxxxx> wrote:
>
> Hello,
>
>> # echo 'module overlay +mp' > /sys/kernel/debug/dynamic_debug/control
>> # strace -o /tmp/strace mv foo bar
>> # dmesg | grep overlay > /tmp/debug
>>
>> And post the /tmp/strace and /tmp/debug files.
>
> # strace -o /tmp/strace mv OVERLAYFS foo
> mv: cannot move ‘OVERLAYFS’ to a subdirectory of itself, ‘foo’
>
> files attached...
Overlayfs cannot create a whiteout on the upper fs.
Do you have
CONFIG_EXT4_USE_FOR_EXT2=y
in your kernel's .config? If not, then you should.
You'll also need
a4859d75944a ("ovl: fix dentry leak for default_permissions")
from the overlayfs-linus branch of
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git
otherwise "default_permissions" will misbehave.
Thanks,
Miklos
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