/etc/samba/smb.conf:

[shadow_share]
  comment = Shadow Copy Enabled Share
  path = /mnt/lv_test
  vfs objects = shadow_copy
  writeable = yes
  browseable = yes

SNAPNAME=`date +%Y.%m.%d-%H.%M.%S`
lvcreate --snapshot --size 100M --name lv_$SNAPNAME /dev/vg_system/lv_test
mkdir /mnt/lv_test/@GMT-$SNAPNAME
mount -o ro /dev/vg_system/lv_$SNAPNAME /mnt/lv_test/@GMT-$SNAPNAME

cat /etc/fstab >> /mnt/lv_test/amor

/etc/samba/smb.conf:

[shadow_share]
  comment = Shadow Copy Enabled Share
  path = /mnt/shadow/working-copy
  vfs objects = shadow_copy
  writeable = yes
  browseable = yes

SNAPNAME=`date +%Y.%m.%d-%H.%M.%S`
cp -al working-copy/ $SNAPNAME
ln -s ../$SNAPNAME working-copy/@GMT-$SNAPNAME

cp -a /mnt/shadow/working-copy/amor /mnt/shadow/working-copy/amor.new
cat /etc/fstab >> /mnt/shadow/working-copy/amor.new
mv /mnt/shadow/working-copy/amor.new /mnt/shadow/working-copy/amor

• http://de.samba.org/samba/docs/man/Samba-HOWTO-Collection/VFS.html#id2654956
• http://tldp.org/HOWTO/LVM-HOWTO/
• http://www.dirvish.org/
• http://www.rsnapshot.org/