and the JVM bone is connected to the... Crowd bone!
and the Crowd bone is connected to the... keystore!
and the Confluence LaTeX plugin bone is also connected to the... TeTeX!
and the TeTeX bone is connected to the... a 32-bit syscall!
and the 32-bit syscall returns EOVERFLOW when the filesystem is over... 2TB!
and the TeTeX bone needs to be... recompiled!
but in the meantime the Confluence temp directory bone needs to be... moved and symlinked!
Paging Rube Goldberg; Rube Goldberg to the white courtesy phone.
In case anyone's keeping track, that's one RT ticket in, one Atlassian support request, 2 hours of research and debugging, a bit of strace, a CSW bug, and a hack in a directory tree; but now it works.