[9fans] copying a venti

[9fans] copying a venti

[Steve Simon]

I am trying to copy my venti from an old server to a new one,
currently I am using somthing along the lines of:

	venti/rdarenas > /tmp/arena; venti/wrarenas /tmp/arena

Which is progressing, admittedly very slowly. I had this problem
before and Russ suggested that perhaps my bloom filter was non
operational.

Is there anything more to setting up a bloom filter on a venti
beyond adding a "bloom /dev/sdC0/bloom" to the venti config and
formatting the partion with venti/fmtbloom before starting venti
for the first time?

Also, I have since discoverd the venti/copy command which
looks to be exactly what I should be using, but how do I generate
a score to copy the whole venti tree?

Thanks,

-Steve

Re: [9fans] copying a venti

[Richard Miller]

> Also, I have since discoverd the venti/copy command which
> looks to be exactly what I should be using, but how do I generate
> a score to copy the whole venti tree?

There's no such thing as "the whole venti tree".  A venti store
may have lots of trees representing different fossil partitions,
vac(1) archives, etc.  You would have to find every root block
(or every one you care about preserving) and venti/copy it.

If your venti store holds nothing but the archives from one fossil
partition, then in theory a venti/copy of the most recent
archive score will transfer the entire dump history.  But from
my experience of corrupted fossil archives I would want to do
some very careful checking to make sure nothing was lost.