I installed XCP 1.6 from http://downloads.xen.org/XCP/61809c/XCP-1.6-61809c.iso with default values
Here is voume configuration I got after installation

LABEL=root-vsdwquws / ext3 defaults 1 1
/var/swap/swap.001 swap swap defaults 0 0
none /dev/pts devpts defaults 0 0
none /dev/shm tmpfs defaults 0 0
none /proc proc defaults 0 0
none /sys sysfs defaults 0 0
[root@xenserver1 ~]# lvm
lvm> pvs
PV VG Fmt Attr PSize PFree
/dev/sda3 XSLocalEXT-23991b91-bb1c-37a5-ff69-3a46d04bd4a7 lvm2 a- 103.78G 0
/dev/sdb VG_XenStorage-546457c3-b4b0-03ca-a0a4-465bc1e34fb9 lvm2 a- 1.82T 1.52T
/dev/sdc VG_XenStorage-546457c3-b4b0-03ca-a0a4-465bc1e34fb9 lvm2 a- 1.82T 1.82T
lvm> quit
Exiting.
[root@xenserver1 ~]# lvm pvs
PV VG Fmt Attr PSize PFree
/dev/sda3 XSLocalEXT-23991b91-bb1c-37a5-ff69-3a46d04bd4a7 lvm2 a- 103.78G 0
/dev/sdb VG_XenStorage-546457c3-b4b0-03ca-a0a4-465bc1e34fb9 lvm2 a- 1.82T 1.52T
/dev/sdc VG_XenStorage-546457c3-b4b0-03ca-a0a4-465bc1e34fb9 lvm2 a- 1.82T 1.82T
[root@xenserver1 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 4.0G 1.8G 2.0G 48% /
none 373M 48K 373M 1% /dev/shm
//192.168.2.219/iso 732G 463G 270G 64% /var/run/sr-mount/7197a6fa-46da-e73e-343f-57c41e2ae54a
[root@xenserver1 ~]# cat /etc/fstab
LABEL=root-vsdwquws / ext3 defaults 1 1
/var/swap/swap.001 swap swap defaults 0 0
none /dev/pts devpts defaults 0 0
none /dev/shm tmpfs defaults 0 0
none /proc proc defaults 0 0
none /sys sysfs defaults 0 0

Tell me why section XSLocalEXT-23991b91-bb1c-37a5-ff69-3a46d04bd4a7 not mounted in /