From: Kevin Wolf <kwolf@redhat.com>
To: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
Cc: phrdina@redhat.com, famz@redhat.com, armbru@redhat.com,
qemu-devel@nongnu.org, lcapitulino@redhat.com,
stefanha@redhat.com, pbonzini@redhat.com, dietmar@proxmox.com
Subject: Re: [Qemu-devel] [PATCH V7 0/8] add internal snapshot support at block device level
Date: Tue, 10 Sep 2013 15:09:35 +0200 [thread overview]
Message-ID: <20130910130935.GE2797@dhcp-200-207.str.redhat.com> (raw)
In-Reply-To: <1375844419-7665-1-git-send-email-xiawenc@linux.vnet.ibm.com>
Am 07.08.2013 um 05:00 hat Wenchao Xia geschrieben:
> This series brings internal snapshot support at block devices level, now we
> have two three methods to do block snapshot lively: 1) backing chain,
> 2) internal one and 3) drive-back up approach.
>
> Comparation:
> Advantages: Disadvantages:
> 1) delta data, taken fast, export, size performance, delete slow.
> 2) taken fast, delete fast, performance, size delta data, format
> 3) performance, export, format taken slow, delta data, size, host I/O
>
> I think in most case, saving vmstate in an standalone file is better than
> saving it inside qcow2, So suggest treat internal snapshot as block level
> methods and not encourage user to savevm in qcow2 any more.
Looks good and should be mergable after a rebase.
Kevin
prev parent reply other threads:[~2013-09-10 13:09 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-07 3:00 [Qemu-devel] [PATCH V7 0/8] add internal snapshot support at block device level Wenchao Xia
2013-08-07 3:00 ` [Qemu-devel] [PATCH V7 1/8] snapshot: new function bdrv_snapshot_find_by_id_and_name() Wenchao Xia
2013-08-07 3:00 ` [Qemu-devel] [PATCH V7 2/8] snapshot: distinguish id and name in snapshot delete Wenchao Xia
2013-09-10 12:36 ` Kevin Wolf
2013-09-11 2:30 ` Wenchao Xia
2013-08-07 3:00 ` [Qemu-devel] [PATCH V7 3/8] qmp: add internal snapshot support in qmp_transaction Wenchao Xia
2013-08-07 3:00 ` [Qemu-devel] [PATCH V7 4/8] qmp: add interface blockdev-snapshot-internal-sync Wenchao Xia
2013-08-07 3:00 ` [Qemu-devel] [PATCH V7 5/8] qmp: add interface blockdev-snapshot-delete-internal-sync Wenchao Xia
2013-08-07 3:00 ` [Qemu-devel] [PATCH V7 6/8] hmp: add interface hmp_snapshot_blkdev_internal Wenchao Xia
2013-08-07 3:00 ` [Qemu-devel] [PATCH V7 7/8] hmp: add interface hmp_snapshot_delete_blkdev_internal Wenchao Xia
2013-08-07 3:00 ` [Qemu-devel] [PATCH V7 8/8] qemu-iotests: add 057 internal snapshot for block device test case Wenchao Xia
2013-08-16 2:16 ` [Qemu-devel] [PATCH V7 0/8] add internal snapshot support at block device level Wenchao Xia
2013-08-16 15:36 ` Stefan Hajnoczi
2013-09-02 1:44 ` Wenchao Xia
2013-09-10 12:26 ` Kevin Wolf
2013-09-10 13:09 ` Kevin Wolf [this message]
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