[weblacky]

Disclaimer-wise, I have not read this entire thread, but the sgi filesystem (xfs) is fully-supported by Linux.

I'll remind everyone that this is in fact a well discussed topic, and I have confirmed through other postings and looking at the changelog myself. So this is not true as of early 2017.  

From: https://fossies.org/linux/xfsprogs/doc/CHANGES
xfsprogs-4.10.0-rc1 (15 Feb 2017) > remove old Irix support (Christoph Hellwig)

All modern Linux distributions only support XFS V3 and higher!  This has been confirmed by multiple members as well as myself. There are still distributions online of Linux from that period that you can install and pull in easily.

But as of version 4.10.0-rc1... You can no longer read an XFS file systems V1 and V2 produced on the Irix operating system.

This does not affect EFS, my understanding is EFS works just fine, which is sort of a sad statement.