Re: [Xen-users] can't mount vfat fs on lvm created by winxp guest

[Nico Kadel-Garcia <nkadel@xxxxxxxxx>]

Yann Boutin wrote:
> On 13:10 Sat 28 Apr     , Tim Post wrote:
>   
> > On Fri, 2007-04-27 at 23:02 +0200, Yann Boutin wrote:
> >     
> > > Greetings, 
> > > I've had no success with mounting a vfat file system created by a 
> > > Windows XP guest on a lvm volume.
> > > # mount -t vfat /dev/vg1/win1 /mnt/
> > >       
> > This is also a common problem when sharing pen drives and similar
> > between Windows and GNU/Linux (or any other odd fat bd)
> >
> > try mount -t vfat -o umask=000 /dev/vg1/win1 /mnt
> >
> > If you go to the mount man page, it explains some things that can
> > 'break' vfat, such as everything by default being mounted with the umask
> > of the current process.
> >
> > see man 8 mount and look for "Mount options for fat"
> >
> > You may need to play with this a bit. The above gets my pen drive
> > mounted correctly, may work for you.
> >
> > This is really a GNU/Linux admin issue, not so much Xen but I figured
> > I'd chirp in anyway since it is kinda cryptic.
> >     
> Ok I've tryed all things working for usb pen problems with no effect. So
> I investigate further:
>
> creating a new volume
> # lvcreate -n win3 -L6G vg1
>
> making a vfat fs on it
> # mkfs.vfat /dev/vg1/win3
>
> mounting it (successfully)
> # mount -v -t vfat /dev/vg1/win3 /mnt/
> /dev/mapper/vg1-win3 on /mnt type vfat (rw)
>
> launching Windows XP guest installation
> # xm create /etc/xen/winxp3.hvm
>
> At this point Windows Xp installer can't detect the partition type and
> report it as 'unknown'
>
> So Ok, let Windows installer (re)format it with fat32 fs and go ahead
> to finish installation. When installation ended I stop Windows
> Guest properly and try again to mount the guest vfat fs and, the same error 
> appends ...
>
> # mount -t vfat /dev/vg1/win3 /mnt/
> mount: wrong fs type, bad option, bad superblock on /dev/vg1/win3,
>        missing codepage or other error
>        In some cases useful info is found in syslog - try
>        dmesg | tail  or so
>
>
> Don't you thing the problem comes from the manner Windows XP guest handles lvm 
> volumes rather than from any missing codepage or file mode option when mounting 
> ?
>
> Anyone can report succes with mounting 'on lvm' vfat guest filesystem ?
>
> Thanks !
>
>         Yann.
>   
Windows XP created it? Are you *sure* it's a FAT32 or vfat compatible 
partition type, and not NTFS?
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