Re: [Qemu-devel] qemu disk on vfat

[Yann Le Doaré]

With :

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

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

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

Le dimanche 07 mai 2006 à 13:00 +0200, NyOS a écrit :
> 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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