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Re: [Qemu-devel] qemu disk on vfat


From: NyOS
Subject: Re: [Qemu-devel] qemu disk on vfat
Date: Sun, 07 May 2006 13:00:32 +0200
User-agent: Opera M2/8.52 (Linux, build 1631)

On Mon, 08 May 2006 12:04:50 +0200, Yann Le Doaré <address@hidden> wrote:

Hi,

It seems like qemu 0.8.0 does not accept image file from a vfat
partition. Is it a bug ?

Greetings.

Yann Le Doaré.


strace :

open("/mnt/partitions/windows0/qmeu-disk", O_RDONLY|O_LARGEFILE) = 7
read(7, "", 1024)                       = 0
close(7)                                = 0
open("/mnt/partitions/windows0/qmeu-disk", O_RDONLY|O_LARGEFILE) = 7
_llseek(7, 128, [128], SEEK_SET)        = 0
read(7, "", 4)                          = 0
close(7)                                = 0
write(2, "qemu: could not open hard disk i"..., 74qemu: could not open
hard disk image '/mnt/partitions/windows0/qmeu-disk'
) = 74
exit_group(1)                           = ?





Hi!

What size is it? Linux only supports vfat (FAT32) partitions with at most 4GB files. A disc image can easily reach that. If the problem is that, the bug is in the kernel, not in qemu. (Just try to copy it an ext2/3 partition. If is isn't possible, or its size differs, the bug has nothing to do with qemu.)

Miklos Gyozo

ps. ext2/3 is surely better than vfat for disc images, cause it supports holes




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