From mboxrd@z Thu Jan  1 00:00:00 1970
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From: Venkatesh Srinivas <me@acm.jhu.edu>
Date: Fri, 21 Aug 2009 10:26:56 -0400
Message-ID: <f75780240908210726m4cffca0wf969f74a0ba12f9d@mail.gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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Subject: [9fans] venti/copy question....
Topicbox-Message-UUID: 501560a2-ead5-11e9-9d60-3106f5b1d025

Hi,

I have a few score trees in Venti that p9p's venti/copy wouldn't copy,
but p9's would. venti/copy aborted with:
copy: reading block 0000000000000000000000000000000000000000 (type
16): read asked for 0000000000000000000000000000000000000000 got
da39a3ee5e6b4b0d3255bfef95601890afd80709

P9's venti/copy has a test, in its walk() function, as to whether a
score is all-zeros. P9P's venti/copy doesn't. Adding this test allows
my copy to proceed.

Is there any reason p9's venti/copy has this test? It seems like a
dubious one, since the all-zero score shouldn't ever be in Venti. But
it's also necessary to copy these trees...

Thanks,
-- vs