[Samba] data corruption in samba 3.4.3 ?

[Shane T. Drinkwater]

Hello,
I am using Citrix XenServer for my VM environment. I found that If I am using samba 3.4.3 and dump a vm from a Citrix xen node the resulting image is not importable(ie corrupt) into xenCenter. If I am using samba-3.3.9 and perform the same operation everything works great.  To dump the vm's from Xen I mount a samba share from the domU OS.   I use the following xen commands to dump the vm

mount -t cifs //172.27.1.100/xenBackups /mnt -o username=sdrinkwater,pass=somepass,dom=ad.pa-ucl.com
xe vm-snapshot vm=guest_name new-name-label=backup_vm
xe template-param-set is-a-template=false uuid=snapshotUUID
xe vm-export vm=snapshotUUID filename=exportfilename.xva
xe vm-uninstall uuid=snapshotUUID  force=true
umount /mnt

Has anyone else experienced this ?? My info is as follows

XenServer mount.cifs version --> mount.cifs version: 1.10
My two test samba servers where build from source with the following config
./configure --with-winbind --with-pam --with-aio-support

My smb.conf from the 3.3.9 server
[global]
  netbios name = medusa
  netbios aliases = insuranceSrv wellnessSrv accountingSrv backupSrv lisSrv personnelSrv hercules copathImagesSrv
  security = ADS
  realm = AD.PA-UCL.COM
  enable privileges = yes
  large readwrite = yes
  encrypt passwords = yes
  workgroup = ad-pa-ucl
  server string = central file server
  domain master = no
  local master = no
  map to guest = bad user
  name resolve order = wins bcast host
  preferred master = no
  log file = /var/log/samba/%m.log
  socket options = TCP_NODELAY SO_SNDBUF=8192 SO_RCVBUF=8192
  wins server = 172.27.1.28
#=======================Winbindd Stuff ==================================
        password server = *
        winbind uid = 10000-20000
        winbind gid = 10000-20000
        winbind separator = +
        template shell = /bin/bash
        template homedir = /home/%D/%U
        winbind cache time = 60
        winbind enum users = yes
        winbind enum groups = yes
        winbind use default domain = yes
        allow trusted domains = Yes

[netBackups]
  path = /home/samba/netBackups
  writable = yes
  create mask = 0777
  directory mask = 0777
  valid users = "AD-PA-UCL+Administrator","AD-PA-UCL+sdrinkwater"
  write list =  "AD-PA-UCL+Administrator","AD-PA-UCL+sdrinkwater"


My smb.conf from the 3.4.3 server
#======================= Global Settings =====================================
  netbios name = virtualtest
  workgroup = ad-pa-ucl
  security = ADS
  realm = AD.PA-UCL.COM
  enable privileges = yes
  encrypt passwords = yes
  local master = no
  preferred master = no
  map to guest = bad user
  log file = /var/log/samba/%m.log
  large readwrite = yes
  socket options = TCP_NODELAY SO_SNDBUF=8192 SO_RCVBUF=8192

#================ Winbind stuff =============================
  winbind separator = +
  winbind enum users = yes
  winbind enum groups = yes
  winbind use default domain = Yes
  idmap uid = 10000-20000
  idmap gid = 10000-20000
  template shell = /bin/bash
  template homedir = /home/%D/%U

[xenBackups]
        path = /home/samba/backups/xenbackups
        writable = yes
        create mask = 0777
        directory mask = 0777
        valid users = "AD-PA-UCL+Administrator","AD-PA-UCL+sdrinkwater"
        write list =  "AD-PA-UCL+Administrator","AD-PA-UCL+sdrinkwater"






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