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Re: [Qemu-discuss] qemu storage windows issue

From: Benoit
Subject: Re: [Qemu-discuss] qemu storage windows issue
Date: Tue, 23 Feb 2016 09:04:20 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Icedove/38.5.0

You read in my head ;)
I thought about this yesterday and tested them and got the same result !! It is like as soon as a disk is coming from virtualized host I got the issue...
I also had the idea to create a partition instead of a raw image and got the same issue

On 02/23/2016 02:28 AM, Fam Zheng wrote:
On Mon, 02/22 16:36, Benoit wrote:
Thanks Fam
No error on my guest / host
Disk usage in Explorer is exactly what it supposed to be this is
where it is strange...
Does your application work well on other storage types, like virtio-scsi or


On 02/17/2016 02:14 AM, Fam Zheng wrote:
On Tue, 02/16 20:41, Benoit wrote:

-host archlinux / qemu 2.4.1 / kvm
-guest windows 7 pro x64
-qemu-img create -f raw en_x64_windows_7_ipc2_storage_75 75G

-drive file=/srv/qemu/vm/en_x64_windows_7_ipc2_storage_75,if=virtio,cache=none,format=raw,discard=unmap

My D: drive (74GB) has 2x 32GB files used for a program to store data.

I realized that my product starts doing FIFO (erasing old data to be
able to write fresh data) as soon as the space used is more than
4GB. It is like I got the same limitation than a FAT drive, my
product detects that the disk is full as soon as more than 4GB are
used on the disk.
Any error message in guest/host?  What does Windows Expolorer say about the
disk usage?



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