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Re: [Qemu-block] [Qemu-devel] [PATCH v6] migration/block: use blk_pwrite

From: Fam Zheng
Subject: Re: [Qemu-block] [Qemu-devel] [PATCH v6] migration/block: use blk_pwrite_zeroes for each zero cluster
Date: Mon, 24 Apr 2017 20:36:59 +0800
User-agent: Mutt/1.8.0 (2017-02-23) 
On Mon, 04/24 20:26, 858585 jemmy wrote:
> > 2) qcow2 with cluster_size = 512 is probably too uncommon to be optimized 
> > for.
> if culster_size is very small, should disable metadata check default?
> 

No, I don't think it's worth the inconsistent behavior. People who want
performance shouldn't use 512 bytes anyway.

Fam
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