Re: [Xen-users] problems mounting HPFS/NTFS domU partition

[Thiago Camargo Martins Cordeiro <thiagocmartinsc@xxxxxxxxx>]

It's pretty simple!   :)

 On you Xen Debian Lenny:

apt-get install kpartx ntfs-3g
kpartx -a /dev/virtual_machines/xp_disk
ls -l /dev/virtual_machines/xp_disk*

 You will see your partitions from inside your Logical Volume (I suppose you use LVM) and now mount it:

ntfs-3g /dev/virtual_machines/xp_disk1 /mnt/windows-domu-c

Good luck!
Thiago

2009/1/27 Studio Rivadossi <studio@xxxxxxxxxxxxx>

Hello,

I'm not able to mount a HPFS/NTFS  domU partition.

My system:

dom0 is on a debian (Lenny) machine, using xen-hypervisor-3.2-1-i386 Xen
Hypervisor.

domU is a Windows XP machine, that works well.
My target is to mount file system domU machine (when domU is not active).

In my domU configuration file I have:
disk = ['phy:/dev/virtual_machines/xp_disk,hda,w', 'phy:/dev/hda,hdc:cdrom,r']

My disk's partitions are:

fdisk -l
...
/dev/sda6            2678        6375    29704153+  8e  Linux LVM


pvscan
 /dev/cdrom: open failed: Read-only file system
 Attempt to close device '/dev/cdrom' which is not open.
 PV /dev/sda6   VG virtual_machines   lvm2 [28.32 GB / 5.32 GB free]
 Total: 1 [28.32 GB] / in use: 1 [28.32 GB] / in no VG: 0 [0   ]


sfdisk -l -Us /dev/virtual_machines/xp_disk

Disk /dev/virtual_machines/xp_disk: 1958 cylinders, 255 heads, 63
sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

  Device Boot Start     End   #cyls    #blocks   Id  System
/dev/virtual_machines/xp_disk1   *      0+   1956    1957-  15719571    7
HPFS/NTFS
/dev/virtual_machines/xp_disk2          0       -       0          0    0
Empty
/dev/virtual_machines/xp_disk3          0       -       0          0    0
Empty
/dev/virtual_machines/xp_disk4          0       -       0          0    0
Empty


Well, I would mount XP domU machine with "mount" command:

mount /dev/virtual_machines/xp_disk /mnt/lvm_disk/
mount: you must specify the filesystem type

If I use -t ntfs, I obtain:

mount -t ntfs /dev/virtual_machines/xp_disk /mnt/lvm_disk/
mount: wrong fs type, bad option, bad superblock
on /dev/mapper/virtual_machines-xp_disk,
      missing codepage or helper program, or other error
      In some cases useful info is found in syslog - try
      dmesg | tail  or so

tail /var/log/syslog
Jan 27 18:25:45 space kernel: [38308.189012] EXT3 FS on dm-1, internal journal
Jan 27 18:25:45 space kernel: [38308.189012] EXT3-fs: mounted filesystem with
ordered data mode.
Jan 27 18:26:37 space kernel: [38360.349357] NTFS-fs warning (device dm-0):
is_boot_sector_ntfs(): Invalid boot sector checksum.
Jan 27 18:26:37 space kernel: [38360.349372] NTFS-fs error (device dm-0):
read_ntfs_boot_sector(): Primary boot sector is invalid.
Jan 27 18:26:37 space kernel: [38360.350503] NTFS-fs error (device dm-0):
read_ntfs_boot_sector(): Mount option errors=recover not used. Aborting
without trying to recover.
Jan 27 18:26:37 space kernel: [38360.350503] NTFS-fs error (device dm-0):
ntfs_fill_super(): Not an NTFS volume.


I think that I must use "mount" command with some options...
Can someone help me?

Thanks in advance,

Severino Rivadossi

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