From: "Russ Cox" <rsc@swtch.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Clearing venti arena during install
Date: Sun, 26 Mar 2006 19:09:15 -0500 [thread overview]
Message-ID: <f3a044b2e13339d9f22c5aeb43cc9aa2@swtch.com> (raw)
In-Reply-To: <20060326210445.19843295CD@mail.bitblocks.com>
> If fossil+venti is chosen during installation, the entire
> venti arena partition is cleared. Is there a way to avoid
> clearing all of the arena space? Since in a sense it is an
> append only log, and the purpose for clearing it is,
> presumably, to allow recreating the index, may be a shortcut
> exists? Doing so will save a lot of time and space
> particularly on a qemu VM. In qemu one can use a sparse file
> or a qcow format file which allocates space only for data
> actually written. Writing even zeroes can eat up space.
Any sparse file worth its salt would catch the case
where you write zeros to a hole and not do anything.
That said, I'd rather leave the zeroing in for now.
The new venti, which I am testing on Plan 9 right now,
does not require the zeroing.
Russ
next prev parent reply other threads:[~2006-03-27 0:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-26 21:04 bakul+plan9
2006-03-27 0:09 ` Russ Cox [this message]
2006-03-27 0:23 ` bakul+plan9
2006-03-27 0:30 ` Russ Cox
2006-03-27 0:33 ` Russ Cox
2006-03-27 0:52 ` geoff
2006-03-27 0:57 ` Russ Cox
2006-03-27 1:23 ` Bakul Shah
2006-04-17 9:57 ` Lluís Batlle i Rossell
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