I was testing my incremental backup code, trying out various scenarios of
renaming/deleting/modifying files between backups, when this happened:

[triffid:12:48pm]/coda > ls
thingy  users/
[triffid:12:48pm]/coda > rm thingy 
rm: remove `thingy'? y
rm: thingy: No such file or directory
[triffid:12:49pm]/coda > cat thingy 
Here's a test file!

This was a somewhat unpleasant surprise, to say the least.  Anybody have
some idea of what is going on here?  I'm 99% sure that taking dumps of the
volume does not change it at all; even if it did, I'm confused as to how
ls and cat see the file, but rm doesn't.  

-Eli Daniel

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