Description of problem:

virt-v2v should first check if the export domain is invalid, like if the images/master folder exist, if not ,give error. As now, we need to wait until the v2v generate .ovf file to know like master/vms not exist error, and before that,already finished transfer the image, convert the image,this is unreasonable, and it's time consuming.


"aug_match "/files/etc/modules.conf/alias"
aug_get "/files/etc/modules.conf/alias"
aug_set "/files/etc/modules.conf/alias/modulename" "e1000"
aug_save
aug_match "/files/boot/grub/menu.lst/title/kernel"
aug_get "/files/boot/grub/menu.lst/title/kernel"
aug_set "/files/boot/grub/menu.lst/default" "0"
aug_get "/files/boot/grub/menu.lst/title[1]/initrd"
aug_save
exists "/boot/initrd-2.4.21-50.EL.img"
mv "/boot/initrd-2.4.21-50.EL.img" "/boot/initrd-2.4.21-50.EL.img.pre-v2v"
aug_save
modprobe "ext2"
modprobe "loop"
command "/sbin/mkinitrd --with=sym53c8xx /boot/initrd-2.4.21-50.EL.img 2.4.21-50.EL"
command "/sbin/chkconfig kudzu off"
umount_all
sync
umount_all
sync
kill_subprocess
virt-v2v: Failed to create directory /tmp/NACJLJG0xI/d66ccc0c-5fb6-4ac1-bcf8-f0d4e54c2cca/master/vms/42bd32b4-7475-449c-9fe8-4c95bc4d60a1: No such file or directory
"






Version-Release number of selected component (if applicable):
virt-v2v-0.6.0.3

How reproducible:
always

Steps to Reproduce:
1,create a export domain but didn't attach to any data-center, then it won't  create the master folder under the nfs path,
2,run the virt-v2v with the export domain above,

Actual results:
fail at the last step, saying folder **/master/vms not exist

Expected results:
check the export domain first to confirm it could be used or not 

Additional info: