On Tuesday 25 January 2005 04:37 am, Poul-Henning Kamp wrote: > In message <20050124134546.GB59685_at_obiwan.tataz.chchile.org>, Jeremie Le Hen writes: > >While talking about WITNESS, I checked my kernel config and remembered > >that FULL_PREEMPTION is on. The panic disappeared when I turned off > >the latter : I managed to create up to about 16 md(4) devices. I know > >this should not be enabled for users, but I'm interested in "exposing > >race conditions" as said in the comment. > > Well, you clearly did :-) > > I suggest you send a summary of what you have found to jhb_at_freebsd.org, > he's working on the FULL_PREEMPTION stuff. FULL_PREEMPTION just preempts more often is all. It's still probably a locking bug of some sort. -- John Baldwin <jhb_at_FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.orgReceived on Thu Feb 03 2005 - 20:27:11 UTC
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