XFS - failed to find log head

[Adam.Jablonski@xxxxxxxxxxxxxx]

I've just installed RH 7.2 from iso image . After some reboots - kernel
panic. Unable to mount  root partition.
So, I tried to xfs_repair  - the result is in the title plus xlog_find_tail
returned error 5.
How to heal my root partition? I've already tried varous options on
xfs_repair only -n works fine but doesn't flush any changes

Regards

Adam Jablonski