Today I tried setting a new FreePBX 15 install on a Dell Poweredge R410 server (running 4 x 120GB SSD drives in a RAID10 configuration). Automatic Installation went pretty well and server was able to boot up, I ran all the updates that it asked for and registered my account (I had to restart several times during this process because it kept getting stuck on random items).
Then I restored a configuration backup that I made a few days ago (from FreePBX 12). The restore looked like it finished successfully but when I tried to restart the machine again it was no longer able to start up FreePBX giving this error below.
Not sure what my next steps should be 
Any help would be greatly appreciated.
4.1617831 XFS (dm-8): Internal error XFS WANT_CORRUPTED_GOTO at line 1788 of file fs/xfs/libxfs/xfs_alloc.c. Caller xfs_free_extent +xaa/8x148 [xfsl 4.1621951 XFS (dm-8): Internal error xfs_trans_cancel at line 993 of file fs/xfs/xfs_trans.c. Caller xfs_efi_recover+8x18e/8x1c8 [xfsl
4.1625231 XFS (dm-8): Corruption of in-memory data detected Shutting down filesystem
4.1625581 XFS (dm-8): Please umount the filesystem and rectify the problem(s) 4.1625921 XFS (dm-8): Failed to recover intents
Generating “/run/initramfs/rdsosreport.txt”
Entering emergency mode. Exit the shell to continue. Type “journaletl” to view system logs.
You might want to save “/run/initramfs/rdsosreport.txt” to a USB stick or /boot after mounting them and attach it to a bug report.