On Mon, Apr 21, 2014 at 12:08:30AM -0600, Chris Murphy wrote:
> I see hard links as completely different to either
> subvolume/snapshot/reflink. Three hardlinks for a file all point to one file,
> they're aren't four unique files. But with the latter, three reflinks or
> snapshots are independent from the parent, including permissions/ACLs, and
> xattr including selinux labels.
You are correct, but if I'm deduping files for backups of the same data,
hardlinks work fine, but more importantly, they do not get lost if I copy
the filesystem to another machine.
reflink relationship pretty much gets lost no matter what tool you use,
except hopefully btrfs send/receive.
Marc
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