From owner-freebsd-hackers@FreeBSD.ORG Sun Dec 7 22:43:34 2014 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 760C221A; Sun, 7 Dec 2014 22:43:34 +0000 (UTC) Received: from elvis.mu.org (elvis.mu.org [IPv6:2001:470:1f05:b76::196]) by mx1.freebsd.org (Postfix) with ESMTP id 62054DC1; Sun, 7 Dec 2014 22:43:34 +0000 (UTC) Received: from [100.89.165.221] (220.sub-70-197-14.myvzw.com [70.197.14.220]) by elvis.mu.org (Postfix) with ESMTPSA id BC7FA341F87B; Sun, 7 Dec 2014 14:43:33 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (1.0) Subject: Re: 10.1-STABLE one week old from svn - random hangs From: Alfred Perlstein X-Mailer: iPhone Mail (12B436) In-Reply-To: Date: Sun, 7 Dec 2014 14:43:31 -0800 Content-Transfer-Encoding: quoted-printable Message-Id: References: <54843BB3.2000602@FreeBSD.org> <548448B1.20907@freebsd.org> To: Wojciech Puchar Cc: FreeBSD Hackers , Alfred Perlstein , "lev@FreeBSD.org" X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 07 Dec 2014 22:43:34 -0000 > On Dec 7, 2014, at 5:25 AM, Wojciech Puchar wrote: >=20 > no crashdump. system does not panic > so i cannot do this That is actually better as you can run ddb scripts or if you what you can fo= rce a crash.=20 Do sysctl -a |grep panic Then set the sysctl node to panic.=20 >=20 >> On Sun, 7 Dec 2014, Alfred Perlstein wrote: >>=20 >> Can you enable crashdumps please and then send a traceback? >>=20 >>=20 >> https://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html= >>=20 >> These two are most helpful: >> https://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html= #kerneldebug-obtain >> https://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug-gdb.= html >>=20 >>=20 >>> On 12/7/14, 3:36 AM, Lev Serebryakov wrote: >>> -----BEGIN PGP SIGNED MESSAGE----- >>> Hash: SHA512 >>>> On 07.12.2014 12:40, Wojciech Puchar wrote: >>>> The problem. At random moment system I/O stops. If you are running >>>> top at this moment, there are lots of prosesses stalled in vnread >>>> or biord. network keeps running, processes that doesn't need I/O >>>> still runs. >>>> top often reports at least 10MB free memory. >>>> seems like a deadlock. Anyone know that problem. How to trace it >>>> down? >>> Looks like I have same problem sometimes. And you could not run any >>> new process, you could not login on console, but you could switch >>> virtual consoles & if "top" is running on one of them, it doesn't hang >>> itself, right? >>>=20 >>> I get this typically when "svnsync" synchronize my local FreeBSD repo >>> mirror and after that FS (UFS2 with SUJ) with my repo is heavily damaged= . >>> - -- // Lev Serebryakov AKA Black Lion >>> -----BEGIN PGP SIGNATURE----- >>> Version: GnuPG v2.0.22 (MingW32) >>> iQJ8BAEBCgBmBQJUhDuzXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w >>> ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRGOTZEMUNBMEI1RjQzMThCNjc0QjMzMEFF >>> QUIwM0M1OEJGREM0NzhGAAoJEOqwPFi/3EePuI8QANK2Xw8oUrApeMMsCqWs6mGo >>> NsijmCLWhTBNGLszEk1pD/GQrqVZRIm8qmn3GReknYZzMdiYYc89b+9ou5nZnQfk >>> +j+ngdBWNTGkxBa5qjBTLSZm2yYZ70rxxIUs4HualK6kgF2CLlLA9XEWlm+pBtCG >>> ZaBWCP/vH5mBvLk+YUOtZtPlMhC7ckNe4Uq13gSkZRaZBtHy0WZ+1nqZz7Xi1nFx >>> XBAlcJMUi4c9EAtBJGovKAVXjkIk6TINhDF+76J8aQlL4drliLvRZQjCnulbQecc >>> VMQP4hFKghmdH1DTSwPX4R44hZd7TF1CW7FNT/qZLyPuZHIcwVYOsH+5gq95liCP >>> CDCt5N8dF/q8wgyMGRyHv8PCdOA9MK8/6PtZY2KAXdIkfPZ6u0bTMHXPWb3qDWPX >>> kdYPIKYZ5rzF3oY6Yuk6Mn4OIJ+Aww5FhNQ5ad4IkUty7p06JMt+sw9X9VEbyZYC >>> ejQ96Tquy9Si2TnjZZbtSySvUZAlJxDT5z5eBvOh9BoexEsrKG8pV1nMv3LMgat8 >>> 0kKxWTXtkD/NPO4+FGFasV/lSgteXWGjRv3s+g1cqmCSWRn4ed8xhFcLoTzbJLQf >>> a5E1LGIDGJPsARmfyD1FF1RS/kYdfWlG7BA6mg91zExZpuuS4oFexh4YaAbfjTe/ >>> oeXgB3qxqhPtvfDmUm+X >>> =3DR88v >>> -----END PGP SIGNATURE----- >>> _______________________________________________ >>> freebsd-hackers@freebsd.org mailing list >>> http://lists.freebsd.org/mailman/listinfo/freebsd-hackers >>> To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.or= g" >>=20 >> _______________________________________________ >> freebsd-hackers@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-hackers >> To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org= " >=20