Comment # 21 on bug 1017461 from Richard Weinberger

(In reply to nicholas cunliffe from comment #20)
> > It happened here in my build server after an uptime of more than two weeks.
> 
> i seem to remember reading that build directories (along with VMs DBs) are
> one of the situations in which disabling COW/snapshots is advisabe?

Let's wait what the btrfs developers say, there a lot of hearsay available
on this topic.
I expect btrfs to work with any workload, sure disabling COW could bring
more performance but it shouldn't be mandatory for every non-trivial load.