Date: Sun, 3 Feb 2013 20:07:45 -0500 (EST) From: Rick Macklem <rmacklem@uoguelph.ca> To: Andriy Gapon <avg@FreeBSD.org> Cc: Konstantin Belousov <kostikbel@gmail.com>, FreeBSD Current <freebsd-current@FreeBSD.org>, Sergey Kandaurov <pluknet@gmail.com> Subject: Re: panic: LK_RETRY set with incompatible flags Message-ID: <1515954355.2640466.1359940065810.JavaMail.root@erie.cs.uoguelph.ca> In-Reply-To: <510E9877.5000701@FreeBSD.org>
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Andriy Gapon wrote: > on 03/02/2013 18:36 Rick Macklem said the following: > > I can think of two possibilities: > > 1 - ZFS isn't setting VV_ROOT on the root vnode under some > > condition. > > or > > 2 - The vnode was left locked from some previous operation that > > happened > > to be done by this thread. Doesn't seem likely, but??? > > > > Maybe Sergey could try the change to line#1451 and see if the panic > > still happens. If not, that would suggest possibility #1, I think. > > If the kernel is configured with witness, then it should be easy to > check where > the exclusive lock was taken (file and line number). > Yep. If Sergey can reproduce this using a kernel with witness, doing "show witness" to see where the lock on the directory vnode was acquired, could be helpful. rick > -- > Andriy Gapon
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