Re: Exposing FUA as alternative to DIOCCACHESYNC for WAPBL

[Thor Lancelot Simon <tls%panix.com@localhost>]

On Tue, Mar 28, 2017 at 01:17:18AM +0200, Jarom??r Dole??ek wrote:
> 2017-03-12 11:15 GMT+01:00 Edgar Fu?? <ef%math.uni-bonn.de@localhost>:
> > Some comments as I probably count as one of the larger WAPBL consumers (we
> > have ~150 employee's Home and Mail on NFS on FFS2+WAPBL on RAIDframe on SAS):
> 
> I've not changed the code in RF to pass the cache flags, so the patch
> doesn't actually enable FUA there. Mainly because disks come and go
> and I'm not aware of mechanism to make WAPBL aware of such changes. It

I ran into this issue with tls-maxphys and got so frustrated I was actually
considering simply panicing if a less-capable disk were used to replace a
more-capable one.

Just FYI.

Thor