Date: Mon, 5 Aug 2013 12:06:58 -0400 From: Mark Saad <nonesuch@longcount.org> To: J David <j.david.lists@gmail.com> Cc: Rick Macklem <rmacklem@uoguelph.ca>, "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org>, Michael Tratz <michael@esosoft.com>, Steven Hartland <killing@multiplay.co.uk>, Konstantin Belousov <kostikbel@gmail.com>, re <re@freebsd.org> Subject: Re: NFS deadlock on 9.2-Beta1 Message-ID: <4166503B-C2FA-4FF4-9E2A-54874CA9EBF2@longcount.org> In-Reply-To: <CABXB=RTSKtUUkmrq409ASO7xRXH0kLDepz2qoB11pK8XAhxXvw@mail.gmail.com> References: <F20E755D-EE01-4411-8790-1E2BC7D8CD5D@esosoft.com> <1710471570.3603170.1375141032147.JavaMail.root@uoguelph.ca> <CABXB=RTSKtUUkmrq409ASO7xRXH0kLDepz2qoB11pK8XAhxXvw@mail.gmail.com>
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On Jul 29, 2013, at 10:48 PM, J David <j.david.lists@gmail.com> wrote: > If it is helpful, we have 25 nodes testing the 9.2-BETA1 build and > without especially trying to exercise this bug, we found > sendfile()-using processes deadlocked in WCHAN newnfs on 5 of the 25 > nodes. The ones with highest uptime (about 3 days) seem most > affected, so it does seem like a "sooner or later" type of thing. > Hopefully the fix is easy and it won't be an issue, but it definitely > does seem like a problem 9.2-RELEASE would be better off without. >=20 > Unfortunately we are not in a position to capture the requested > debugging information at this time; none of those nodes are running a > debug version of the kernel. If Michael is unable to get the > information as he hopes, we can try to do that, possibly over the > weekend. For the time being, we will convert half the machines to > rollback r250907 to try to confirm that resolves the issue. >=20 > Thanks all! If one has to encounter a problem like this, it is nice > to come to the list and find the research already so well underway! > ______________________________ All Is there any updates on this issue ? Has anyone tested it or see it happen= on the release candidate ?=20 --- Mark saad | mark.saad@longcount.org
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