From: Fam Zheng <famz@redhat.com>
To: 858585 jemmy <jemmy858585@gmail.com>
Cc: qemu-block@nongnu.org, quintela@redhat.com, dgilbert@redhat.com,
qemu-devel@nongnu.org, Stefan Hajnoczi <stefanha@redhat.com>,
Lidong Chen <lidongchen@tencent.com>
Subject: Re: [Qemu-devel] [PATCH v6] migration/block: use blk_pwrite_zeroes for each zero cluster
Date: Mon, 17 Apr 2017 11:49:25 +0800 [thread overview]
Message-ID: <20170417034925.GC6717@lemon.lan> (raw)
In-Reply-To: <CAOGPPbeUkBskJfFX9=Of62pDrt6U-KAjbFZ-r=yVNNeb+ceAuA@mail.gmail.com>
On Fri, 04/14 14:30, 858585 jemmy wrote:
> Do you know some other format which have very small cluster size?
64k is the default cluster size for qcow2 but it can be configured at image
creation time, as 512 bytes, for example:
$ qemu-img create -f qcow2 test.qcow2 -o cluster_size=512 1G
Fam
next prev parent reply other threads:[~2017-04-17 3:49 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-13 2:34 [Qemu-devel] [PATCH v6] migration/block: use blk_pwrite_zeroes for each zero cluster jemmy858585
2017-04-13 14:16 ` Stefan Hajnoczi
2017-04-14 0:57 ` 858585 jemmy
2017-04-14 6:00 ` Fam Zheng
2017-04-14 6:30 ` 858585 jemmy
2017-04-17 3:49 ` Fam Zheng [this message]
2017-04-17 4:00 ` 858585 jemmy
2017-04-24 7:40 ` 858585 jemmy
2017-04-24 11:54 ` 858585 jemmy
2017-04-24 12:09 ` Fam Zheng
2017-04-24 12:15 ` 858585 jemmy
2017-04-24 12:19 ` Fam Zheng
2017-04-24 12:26 ` 858585 jemmy
2017-04-24 12:36 ` Fam Zheng
2017-04-24 12:44 ` 858585 jemmy
2017-04-14 6:38 ` [Qemu-devel] [Qemu-block] " Stefan Hajnoczi
2017-04-14 6:48 ` 858585 jemmy
2017-04-17 3:47 ` Fam Zheng
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