Description of problem:


Version-Release number of selected component (if applicable):
dracut-033-360.el7_2.x86_64

How reproducible:
Always

Steps to Reproduce:

1. You need multipathed devices, in my cases FibreChannel LUNs 

2. In /etc/multipath.conf set following:
defaults {
    user_friendly_names  no
}

Alternatively you can set aliases for your wwids.

3. Reboot

4. Now multipathed devices appear as symlinks like /dev/mapper/360a0123456789abcdef0123456789abcde -> --/dev/dm-X

5. Run: `dracut /tmp/test.img` which gives one to many error msgs:
ls: cannot access /dev/mapper/mpath*: No such file or directory

Actual results:
Dracut skips all those devices that do not have mpath-prefixes.

Expected results:
Dracut should iterate over all devices in /dev/mapper and determine if they are multipath devices by using other means (such as checking their uuid under /sys)

Additional info:
This bug has been fixed in upstream with following commit: https://github.com/haraldh/dracut/commit/918fbfcf6b99016f1d426e7c131b9fdeaaaede89