From owner-freebsd-fs@freebsd.org Tue May 31 10:07:17 2016 Return-Path: Delivered-To: freebsd-fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id EE4CDB549F6 for ; Tue, 31 May 2016 10:07:17 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id DF6381BE2 for ; Tue, 31 May 2016 10:07:17 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id u4VA7EFH020200 for ; Tue, 31 May 2016 10:07:17 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-fs@FreeBSD.org Subject: [Bug 194513] zfs recv hangs in state kmem arena Date: Tue, 31 May 2016 10:07:14 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 10.0-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: girgen@FreeBSD.org X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-fs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 31 May 2016 10:07:18 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D194513 --- Comment #16 from Palle Girgensohn --- We are seeing this regularly on a machine with 34 GB RAM 34 TB storage JBOD large array (ZFS) *no* SSD ZIL or L2Arc. ssh othermachine zfs send fs | zfs receive fs sometimes hangs. Not often, perhaps once a month or so. Always in kmem arena just like mgoroff@quorum.net describes above. I tried Stevens program to allocate memory, but it still stuck. This is backup machine, so I can always just reboot, unless someone has an = idea about something to try first, that could perhaps explain more about what's happening? Palle --=20 You are receiving this mail because: You are the assignee for the bug.=