The current kernel version (3.14.50) found on the current release (4.6.0), has a version of `mkfs.xfs` which creates filesystems too new for the kernel to support.
[39571.687004] XFS (loop1): Version 5 superblock detected. This kernel has EXPERIMENTAL support enabled!
Use of these features in this kernel is at your own risk!
[39571.687007] XFS (loop1): Superblock has unknown read-only compatible features (0x1) enabled.
[39571.687009] XFS (loop1): Attempted to mount read-only compatible filesystem read-write.
Filesystem can only be safely mounted read only.
[39571.687014] XFS (loop1): SB validate failed with error 22.
According to some google searching, this is because of the `finobt=1` option which was turned on by default in the userspace utilities.
The xfs team says they wait a year after a stable kernel release supporting a new feature before turning said feature on by default in the userspace utilities. So is there any reason why system rescue cd is using such an ancient kernel?
tried you to boot altker ? It is a 4.1 kernel.
turned around using "mkfs.xfs -m crc=0 /dev/sdxy"