Description of problem:

When 'noauto' is used as an fsoption and liveimgurl (livepayload) used in kickstart, it causes anaconda to Traceback and fail

Sample kickstart:

## 
text
install
cmdline
firewall --disabled
selinux --disabled
reboot
auth --enableshadow --passalgo=sha512

rootpw --lock
timezone --utc --ntpservers=ntp1.ops Etc/UTC
services --disabled=autofs,cups,gpm,isdn,kudzu,,pcmcia,xfs,nfslock,readahead,readahead_early,rhnsd,rpcgssd,rpcidmapd,xinetd --enabled=cpuspeed,diskdump,ntpd,snmpd
bootloader --location=mbr --append="hda=noprobe panic=5 numa=acpi"

liveimg --url=https://webserver/88b9302a-90a8-47b5-a2a9-3a521806740c/os_image.tar.gz

# System bootloader configuration
bootloader --location=mbr --driveorder="sda" --timeout=5
# Partition clearing information
clearpart --all --drives=sda
# Disk partitioning information
part biosboot --asprimary --fstype="biosboot" --ondisk=sda --size=1
part /boot --asprimary --fstype="ext4" --ondisk=sda --size=512 --label=boot
part pv.02 --asprimary --grow --ondisk=sda --size=466944
volgroup sys --pesize=4096 pv.02
logvol /home  --fstype="ext4" --size=10240 --name=home --vgname=sys
logvol /  --fstype="ext4" --size=10240 --name=root --vgname=sys
logvol swap  --fstype="swap" --size=24576 --name=swap --vgname=sys
logvol /tmp  --fstype="ext4" --size=4096 --name=tmp --vgname=sys
logvol /var  --fstype="ext4" --size=4096 --name=var --vgname=sys
logvol /storage  --fstype="ext4" --grow --size=1 --fsoptions="noauto" --name=storage --vgname=sys


In above kickstart, the /storage logical volume is not mounted because we pass --fsoptions="noauto"

This makes the installer fail with the following Traceback and Error message:
01:10:21,643 CRIT anaconda: Traceback (most recent call last):

  File "/usr/lib64/python2.7/site-packages/pyanaconda/threads.py", line 227, in run
    threading.Thread.run(self, *args, **kwargs)

  File "/usr/lib64/python2.7/threading.py", line 765, in run
    self.__target(*self.__args, **self.__kwargs)

  File "/usr/lib64/python2.7/site-packages/pyanaconda/packaging/livepayload.py", line 109, in progress
    mnt_stat = iutil.eintr_retry_call(os.statvfs, iutil.getSysroot()+mnt)

  File "/usr/lib64/python2.7/site-packages/pyanaconda/iutil.py", line 1157, in eintr_retry_call
    return func(*args)

OSError: [Errno 2] No such file or directory: '/mnt/sysimage/storage'



The error seems to be from the "progress method" https://github.com/rhinstaller/anaconda/blob/master/pyanaconda/payload/livepayload.py#L122. The method tries to calculate the size using 'stat' regardless whether the mountpoint is mounted or not, here /storage isn't mounted. 

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


How reproducible:
Everytime

Steps to Reproduce:
1. PXE boot anaconda use 'liveimg --url' for OS image and partition a disk add use --fsoptions="noauto" on it.
2.
3.

Actual results:
Traceback


Expected results:

Anaconda continuous to work when 'liveimg' and '--fsoptions' are specified.

Additional info: