From owner-freebsd-fs@FreeBSD.ORG Fri Jun 9 08:14:14 2006 Return-Path: X-Original-To: fs@freebsd.org Delivered-To: freebsd-fs@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 08FD116A419 for ; Fri, 9 Jun 2006 08:14:14 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from fw.zoral.com.ua (ll-227.216.82.212.sovam.net.ua [212.82.216.227]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0553D43D79 for ; Fri, 9 Jun 2006 08:14:12 +0000 (GMT) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (root@deviant.kiev.zoral.com.ua [10.1.1.148]) by fw.zoral.com.ua (8.13.4/8.13.4) with ESMTP id k598CfIL043645 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 9 Jun 2006 11:12:41 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.13.6/8.13.6) with ESMTP id k598E0gj021927; Fri, 9 Jun 2006 11:14:00 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.13.6/8.13.6/Submit) id k598DxZ8021926; Fri, 9 Jun 2006 11:13:59 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Fri, 9 Jun 2006 11:13:59 +0300 From: Konstantin Belousov To: Mikhail Teterin Message-ID: <20060609081359.GH54415@deviant.kiev.zoral.com.ua> References: <200606081346.04908.mi+mx@aldan.algebra.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="WIIRZ1HQ6FgrlPgb" Content-Disposition: inline In-Reply-To: <200606081346.04908.mi+mx@aldan.algebra.com> User-Agent: Mutt/1.4.2.1i X-Virus-Scanned: ClamAV version 0.88.2, clamav-milter version 0.88.2 on fw.zoral.com.ua X-Virus-Status: Clean Cc: fs@freebsd.org Subject: Re: heavy NFS writes lead to corrup summary in superblock 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: Fri, 09 Jun 2006 08:14:14 -0000 --WIIRZ1HQ6FgrlPgb Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Jun 08, 2006 at 01:46:04PM -0400, Mikhail Teterin wrote: > Our amd64 6.1-STABLE system is used to collect backup dumps from producti= on=20 > systems (mostly -- Solaris) via NFS. When in progrss, the dumps arrive at= an=20 > average rate of 20Mb/s. >=20 > Every once in a while I notice a discrepancy in the amount of used space = on=20 > the backup FS as reported by df vs. that reported by the total du. >=20 > Unmounting the FS and fsck-ing it fixes the problem with fsck reporting= =20 > (despite the clean unmount): >=20 > SUMMARY BLK COUNT(S) WRONG IN SUPERBLK > SALVAGE? yes >=20 > The FS is intended for very few very large files and was created=20 > with "newfs -b 65536 -O1" (no softupdates). >=20 > This workaround (explicit fsck) is acceptable for us, but it is a sign of= some=20 > kind of rot, and I thought, you'd like to know... >=20 > Yours, >=20 > -mi Wild guess: try rev. 1.673 of the sys/kern/vfs_subr.c. --WIIRZ1HQ6FgrlPgb Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (FreeBSD) iD8DBQFEiS3GC3+MBN1Mb4gRAn4NAKDOUaK171CGo8W458X0GrUgqzO1qgCfdJLC c5R3cNnLyJRu4jFqWOnxDkk= =Xq7v -----END PGP SIGNATURE----- --WIIRZ1HQ6FgrlPgb--