[pve-devel] [PATCH] Increases the dd read/write speed when migrating LVM disks. This should bring LVM migration speed up to match that of rsyncing qcows.

[James Lavoy]

Sorry to resurrect an old thread here, but I was expecting this to get
implemented by now. Have I not done something I need to to get some form of
this patch merged? LVM Migrations continue to be unnecessarily slow.

On Wed, Sep 7, 2016 at 1:32 AM, James Lavoy <jalavoy at gmail.com> wrote:

> I'm okay with 4K. Again, anything other than default is fine by me.
>
> On Thu, Aug 25, 2016 at 3:55 AM, Wolfgang Bumiller <w.bumiller at proxmox.com
> > wrote:
>
>> On Wed, Aug 24, 2016 at 07:19:04PM +0200, Dietmar Maurer wrote:
>> > I am afraid that increasing block size is bad for sparse file detection.
>> >
>> > Seems dd simply use "bs" for for memory buffer and zero block detection?
>>
>> The speed values for 4k look acceptable though? Might be a good
>> compromise?
>>
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>
>