Given:
# mv /mnt/hard/git-src/ /usr/portage/distfiles/
mv: inter-device move failed:
/mnt/hard/git-src/' to
/usr/portage/distfiles/git-src'; unable to remove target: Is a directory
And
cd /tmp; mkdir a b; mdkir a/c b/c;
touch a/c/1 b/c/1
mv a/c b/ mv: cannot move
a/c' to
b/c': File existsrm a/c/1 b/c/1
mv a/c b/
So moving a dir to a dir with same name, when they contain similar files, is 'File exists'. What's the point of tagging it 'inter-device move' when using different partitions?