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All high-performance filesystems assume the power won't go out and lose data if it does. If this matters to you, learn how to use fsync.

Suspends and hibernates do not count as the power going out. If they act like you've simply yanked the plug, something is wrong with the kernel somewhere.

I'm not sure what you are referring to. Are you saying that XFS loses data on suspends?

EDIT: Ok I see what's going on. paines is having problems with EXT4 and suspends. I wasn't talking about that. I was responding to nodata's XFS losing data fud.

I was getting(IIRC) ext4_orphan_cleanup:deleting unreferenced inode XXXXXX messages, one after another after another, and always after a suspend. I waited a few minutes, which made me very nervous. No inputs would take actions besides MagicSysKey->Sync+Umount+Boot. I had this like 4-5 Times.

Additionally XFS was built for what (in 1994) were big files, in the order of megabytes upwards.