From owner-freebsd-fs@FreeBSD.ORG Wed Feb 11 06:59:45 2009 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B6FBE1065673 for ; Wed, 11 Feb 2009 06:59:45 +0000 (UTC) (envelope-from dan.cojocar@gmail.com) Received: from an-out-0708.google.com (an-out-0708.google.com [209.85.132.247]) by mx1.freebsd.org (Postfix) with ESMTP id 7454D8FC13 for ; Wed, 11 Feb 2009 06:59:45 +0000 (UTC) (envelope-from dan.cojocar@gmail.com) Received: by an-out-0708.google.com with SMTP id b38so46723ana.13 for ; Tue, 10 Feb 2009 22:59:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:content-type:content-transfer-encoding; bh=YHIjBdU2XDmYHfvOt6srXV4ROEc5YK5eC7sKznks/GY=; b=yDCAXgT3owa/WRQTazsjqPxGTOcOIZfnyBNzW8JN1nyqZm2F3C43M4NYNwaNC2E/Zl 7OOVzB5uUihGiYprLh2GUwmdDFrwSeMoZ1JheZRtzrM8N99Wqnqc6JzBqSpbxZ4Yj/rT jF1UFAtX3dMoY2ZzAJYzAuZ2fNDX4UuB/eLec= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type :content-transfer-encoding; b=DSjRPONSX99oMr6nSnfGFeuXFX7Jnc1KEtAimMI5dHjq59qBKpZLuuiGZoA3pB+8lc jTkG7ccKhWVaRRllTd1CRBOa0MCAI4uZLJZdTp3ufWAFxgQoBbFyrDKjTVeRBnrdb2rq h6fKXgGJSwLS1ncBNDZYKQM57lKUkV9JsSHwk= MIME-Version: 1.0 Received: by 10.100.3.13 with SMTP id 13mr443447anc.37.1234335584676; Tue, 10 Feb 2009 22:59:44 -0800 (PST) Date: Wed, 11 Feb 2009 08:59:44 +0200 Message-ID: From: Dan Cojocar To: freebsd-fs@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Subject: zfs page fault X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 Feb 2009 06:59:46 -0000 Hello, I have found this morning that one of my systems was not responding. After attaching a monitor I have found that the system has encountered a page fault. Here is the bt: Fatal trap 12: page fault while in kernel mode fault virtual address =3D 0x4c fault code =3D supervisor write, protection violation instruction pointer =3D 0x20:0x8051ba96 stack pointer =3D 0x28:0x83a8db7c frame pointer =3D 0x28:0x83a8db94 code segment =3D base 0x0, limit 0xfffff, type 0x1b =3D DPL 0, pres 1, def32 1, gran 1 processor eflags =3D interrupt enabled, resume, IOPL =3D 0 current process =3D 18 (vnlru) Physical memory: 1015 MB Dumping 273 MB: 258 242 226 210 194 178 162 146 130 114 98 82 66 50 34 18 2 #0 doadump () at pcpu.h:246 246 __asm __volatile("movl %%fs:0,%0" : "=3Dr" (td)); (kgdb) bt #0 doadump () at pcpu.h:246 #1 0x80477e99 in db_fncall (dummy1=3D-2086086336, dummy2=3D0, dummy3=3D-2139548352, dummy4=3D0x83a8d920 "=C3yI\200\200=C8=C4\203") at /usr/src/sys/ddb/db_command.c:548 #2 0x80478291 in db_command (last_cmdp=3D0x8073531c, cmd_table=3D0x0, dopager=3D1) at /usr/src/sys/ddb/db_command.c:445 #3 0x804783ea in db_command_loop () at /usr/src/sys/ddb/db_command.c:498 #4 0x8047a23c in db_trap (type=3D12, code=3D0) at /usr/src/sys/ddb/db_main= .c:229 #5 0x8053df03 in kdb_trap (type=3D12, code=3D0, tf=3D0x83a8db3c) at /usr/src/sys/kern/subr_kdb.c:534 #6 0x806a804f in trap_fatal (frame=3D0x83a8db3c, eva=3D76) at /usr/src/sys/i386/i386/trap.c:920 #7 0x806a8310 in trap_pfault (frame=3D0x83a8db3c, usermode=3D0, eva=3D76) at /usr/src/sys/i386/i386/trap.c:842 #8 0x806a8ce5 in trap (frame=3D0x83a8db3c) at /usr/src/sys/i386/i386/trap.= c:522 #9 0x8069062b in calltrap () at /usr/src/sys/i386/i386/exception.s:165 #10 0x8051ba96 in _sx_xlock (sx=3D0x3c, opts=3D0, file=3D0x80969370 "/usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/= dbuf.c", line=3D1807) at atomic.h:153 #11 0x80899235 in dmu_buf_update_user () from /boot/kernel/zfs.ko #12 0x808f0a53 in zfs_znode_dmu_fini () from /boot/kernel/zfs.ko #13 0x809136d6 in zfs_freebsd_reclaim () from /boot/kernel/zfs.ko #14 0x806b3132 in VOP_RECLAIM_APV (vop=3D0x80975580, a=3D0x83a8dc30) at vnode_if.c:1619 #15 0x80591b22 in vgonel (vp=3D0x874c4d9c) at vnode_if.h:830 #16 0x80596f13 in vnlru_free (count=3D245) at /usr/src/sys/kern/vfs_subr.c:= 899 #17 0x8059759e in vnlru_proc () at /usr/src/sys/kern/vfs_subr.c:768 #18 0x804f0f4f in fork_exit (callout=3D0x80597500 , arg=3D0x0, frame=3D0x83a8dd38) at /usr/src/sys/kern/kern_fork.c:821 #19 0x806906a0 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:= 270 (kgdb) If someone needs more details I'm here. Thanks, Dan