[9fans] Regenerating Venti Index Sections?

[Venkatesh Srinivas]

Hi,

I have a ~5GB Venti which had run for some time with one 256MB Index
Section; recently, the Index Section became corrupted. The Arenas are
intact. I was using plan9port's Venti.

Is it possible for me to reconstruct the index section? If so, how? Will
the Venti be able to run without it? If I can reconstruct it, can the
new index section be larger?

Thanks,
--vs