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Subject: Re: [Qemu-devel] qemu disk on vfat
From: Yann Le =?ISO-8859-1?Q?Doar=E9?= <yledoare@linuxconsole.org>
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Date: Mon, 08 May 2006 19:44:51 +0000
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To: qemu-devel@nongnu.org

With :

qemu-img create /mnt/partitions/windows0/qmeu-disk 4M
qemu -hda /mnt/partitions/windows0/qmeu-disk=20

qemu: could not open hard disk image'/mnt/partitions/windows0/qmeu-disk'

but with on ext3/ext2 or tmpfs, there is no problem.=20

Le dimanche 07 mai 2006 =E0 13:00 +0200, NyOS a =E9crit :
> On Mon, 08 May 2006 12:04:50 +0200, Yann Le Doar=E9 =20
> <yledoare@linuxconsole.org> wrote:
>=20
> > Hi,
> >
> > It seems like qemu 0.8.0 does not accept image file from a vfat
> > partition. Is it a bug ?
> >
> > Greetings.
> >
> > Yann Le Doar=E9.
> >
> >
> > strace :
> >
> > open("/mnt/partitions/windows0/qmeu-disk", O_RDONLY|O_LARGEFILE) =3D =
7
> > read(7, "", 1024)                       =3D 0
> > close(7)                                =3D 0
> > open("/mnt/partitions/windows0/qmeu-disk", O_RDONLY|O_LARGEFILE) =3D =
7
> > _llseek(7, 128, [128], SEEK_SET)        =3D 0
> > read(7, "", 4)                          =3D 0
> > close(7)                                =3D 0
> > write(2, "qemu: could not open hard disk i"..., 74qemu: could not ope=
n
> > hard disk image '/mnt/partitions/windows0/qmeu-disk'
> > ) =3D 74
> > exit_group(1)                           =3D ?
> >
> >
> >
> >
>=20
> Hi!
>=20
> What size is it? Linux only supports vfat (FAT32) partitions with at mo=
st =20
> 4GB files. A disc image can easily reach that.
> If the problem is that, the bug is in the kernel, not in qemu. (Just tr=
y =20
> to copy it an ext2/3 partition. If is isn't possible, or its size diffe=
rs, =20
> the bug has nothing to do with qemu.)
>=20
> Miklos Gyozo
>=20
> ps. ext2/3 is surely better than vfat for disc images, cause it support=
s =20
> holes
>=20
>=20
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