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[Qemu-discuss] qemu storage windows issue

From: Benoit
Subject: [Qemu-discuss] qemu storage windows issue
Date: Tue, 16 Feb 2016 20:41:32 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Icedove/38.5.0


-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.

Do you have any idea to help me ?

Many thanks


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