XFS as default FS - does RH have a guide for corrupted FS recovery

Hi,
i just been searching through the rhel forums and knowledgebase for info on the XFS FS. Didn't find much.

In this regard, i'd like to ask:

• biggest question - does RH have some papers on how-to recovery of the corrupted XFS FS? Ext4 is very well known, but if i deploy XFS and it gets corrupted .. what would be the steps to remedy the errors? Is it really safe to go XFS for '/' (root) FS? how about FS recovery when server crashes? and '/' is not accessible?

• why the move from ext4 to xfs - i've been googling it and can't find a clear answer there.. was it because XFS support 500tb and ext4 only 50tb in rhel7.0 ?

• does the RH have any documentation where to read on the proper deployment of XFS and does RH have performance comparison to EXT vs. XFS ?

I didnt work with XFS previously, so i need to gather as much info as i can, before deploing it. Mainly the recovery is what i'm interested in..

thanks