On Tue, 3 Jul 2007, Matthew Garrett wrote:
> Suspend to RAM on a machine with / on a fuse filesystem turns out to be
> a screaming nightmare - either the suspend fails because syslog (for
> instance) can't be frozen, or the machine deadlocks for some other
> reason I haven't tracked down. We could "fix" fuse, or alternatively we
> could do what we do for suspend to RAM on other platforms (PPC and APM)
> and just not use the freezer.
Quite apart from the sync() matter, _any_ synchronous call to a FUSE
filesystem during STR will cause trouble. Even if the user task
implementing the filesystem isn't frozen, when it tries to carry out
some I/O to a suspended device it will either:
block until the system wakes up, or
cause the suspend to abort.
Neither outcome is desirable.
Alan Stern
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