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RE: [Xen-users] copying or dding from a VM-template resulting in the who

from [Jeff Sturm]

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To:	ma qiang <maqiang1984@xxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject:	RE: [Xen-users] copying or dding from a VM-template resulting in the whole system getting stuck
From:	Jeff Sturm <jeff.sturm@xxxxxxxxxx>
Date:	Thu, 14 Oct 2010 09:17:44 -0400
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Thread-topic:	[Xen-users] copying or dding from a VM-template resulting in the whole system getting stuck

This on Linux? I find copying image files with O_DIRECT is helpful.

With the “dd” command, try “iflag=direct” and “oflag=direct”. Use a reasonable buffer size, like bs=64k or so, to achieve a faster copy operation.

-Jeff

From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of ma qiang
Sent: Wednesday, October 13, 2010 10:51 PM
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] copying or dding from a VM-template resulting in the whole system getting stuck

Hi all,

When I create a new VM by copying or dding from a VM-template, the cp/dd operation takes almost all the memory and gets one cpu rate to almost 100%, resulting in the whole system getting stuck.

anyone knows how to perform this with less cost?

Thanks a lot.

Qiang

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[Xen-users] copying or dding from a VM-template resulting in the whole system getting stuck, ma qiang RE: [Xen-users] copying or dding from a VM-template resulting in the whole system getting stuck, Jeff Sturm <= Re: [Xen-users] copying or dding from a VM-template resulting in the whole system getting stuck, ma qiang RE: [Xen-users] copying or dding from a VM-template resulting in the whole system getting stuck, Jeff Sturm RE: [Xen-users] copying or dding from a VM-template resulting in the whole system getting stuck, Greg Woods Re: [Xen-users] copying or dding from a VM-template resulting in the whole system getting stuck, Fajar A. Nugraha

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