> You didn't say whether you're using a FFS v1 or v2 file system,

Hm, I thought I said at some point in the thread, but no matter.
It was v1.  One thing I want to try is to see if behaviour with v2
differs from that with v1.

> and I don't recall whether you specified the block and fragment
> sizes,

I don't recall either.  8k/64k.

> but I did a very quick audit of the FFS code and found what looks
> like a serious truncation problem.  Attached is a diff that I think
> will fix it.

Thank you.  I'll definitely try building a kernel with this patch and
see if it helps anything.

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