[Gluster-users] How reliable is XFS under Gluster?

[Kal Black]

Hello,
I am in the point of picking up a FS for new brick nodes. I was used to
like and use ext4 until now but I recently red for an issue introduced by a
patch in ext4 that breaks the distributed translator. In the same time, it
looks like the recommended FS for a brick is no longer ext4 but XFS which
apparently will also be the default FS in the upcoming RedHat7. On the
other hand, XFS is being known as a file system that can be easily
corrupted (zeroing files) in case of a power failure. Supporters of the
file system claim that this should never happen if an application has been
properly coded (properly committing/fsync-ing data to storage) and the
storage itself has been properly configured (disk cash disabled on
individual disks and battery backed cache used on the controllers). My
question is, should I be worried about losing data in a power failure or
similar scenarios (or any) using GlusterFS and XFS? Are there best
practices for setting up a Gluster brick + XFS? Has the ext4 issue been
reliably fixed? (my understanding is that this will be impossible unless
ext4 isn't being modified to allow popper work with Gluster)

Best regards
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