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Re: [Qemu-devel] [Bug 1428958] [NEW] random IO errors / data corruption

From: Stefan Hajnoczi
Subject: Re: [Qemu-devel] [Bug 1428958] [NEW] random IO errors / data corruption in VMs (created and executed via virt-manager)
Date: Wed, 11 Mar 2015 17:14:41 +0000
User-agent: Mutt/1.5.23 (2014-03-12)

On Fri, Mar 06, 2015 at 06:50:30AM -0000, Dmitry Sutyagin wrote:
> I have recurring problems with VM installation and usage - data on VM disk 
> gets corrupted at some point and it causes all sorts of problems - sometimes 
> I cannot even install base system, other times some .so files are corrupt 
> after isntallation, etc - totally random.
> -drive 
> file=/home/virtual-disks/fuel.vdi,if=none,id=drive-virtio-disk0,format=vdi

Hi Dmitry,
A bug that can lead to corruption was recently discovered in the vdi
image format code in QEMU.

The vdi image format code is only designed to work for
importing/exporting image files in qemu-img convert.  It is not suitable
for running guests and achieving good I/O performance.

I recommend using raw or qcow2 image files instead.


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