From owner-freebsd-fs@FreeBSD.ORG Mon May 4 20:30:04 2009 Return-Path: Delivered-To: freebsd-fs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 07A1B106566B for ; Mon, 4 May 2009 20:30:04 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id E9EC98FC12 for ; Mon, 4 May 2009 20:30:03 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.3/8.14.3) with ESMTP id n44KU3Zk058348 for ; Mon, 4 May 2009 20:30:03 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.3/8.14.3/Submit) id n44KU3Bp058343; Mon, 4 May 2009 20:30:03 GMT (envelope-from gnats) Date: Mon, 4 May 2009 20:30:03 GMT Message-Id: <200905042030.n44KU3Bp058343@freefall.freebsd.org> To: freebsd-fs@FreeBSD.org From: Doug Poland Cc: Subject: Re: kern/94769: [ufs] Multiple file deletions on multi-snapshotted filesystems causes hang X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Doug Poland List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 May 2009 20:30:04 -0000 The following reply was made to PR kern/94769; it has been noted by GNATS. From: Doug Poland To: bug-followup@FreeBSD.org, john@kozubik.com Cc: Subject: Re: kern/94769: [ufs] Multiple file deletions on multi-snapshotted filesystems causes hang Date: Mon, 4 May 2009 15:11:33 -0500 I recently started experiencing similar behavior on a 7.1-RELEASE i386 host. In this case the deadlock occurs as soon as sysutils/freebsd-snapshots run it's weekly cron entry: 0 * * * * root periodic-snapshot hourly 0 0 * * * root periodic-snapshot daily 0 0 * * 0 root periodic-snapshot weekly I am running a GENERIC kernel without quotas. Here's the list of snapshots on the various filesystems: Filesystem User User% Snap Snap% Snapshot / 267MB 54.0% 704KB 0.1% daily.0 / 267MB 54.0% 704KB 0.1% daily.1 / 267MB 54.0% 704KB 0.1% daily.2 / 267MB 54.0% 704KB 0.1% daily.3 / 267MB 54.0% 704KB 0.1% daily.4 / 267MB 54.0% 784KB 0.2% daily.5 / 267MB 54.0% 784KB 0.2% daily.6 / 267MB 54.0% 608KB 0.1% hourly.0 / 267MB 54.0% 640KB 0.1% hourly.1 / 267MB 54.0% 656KB 0.1% hourly.2 / 267MB 54.0% 656KB 0.1% hourly.3 / 267MB 54.0% 704KB 0.1% weekly.0 / 267MB 54.0% 896KB 0.2% weekly.1 / 267MB 54.0% 928KB 0.2% weekly.2 / 267MB 54.0% 1MB 0.2% weekly.3 /var 1237MB 10.4% 16MB 0.1% daily.0 /var 1237MB 10.4% 17MB 0.1% daily.1 /var 1237MB 10.4% 30MB 0.3% daily.2 /var 1237MB 10.4% 32MB 0.3% daily.3 /var 1237MB 10.4% 32MB 0.3% daily.4 /var 1237MB 10.4% 33MB 0.3% daily.5 /var 1237MB 10.4% 141MB 1.2% daily.6 /var 1237MB 10.4% 7MB 0.1% hourly.0 /var 1237MB 10.4% 7MB 0.1% hourly.1 /var 1237MB 10.4% 7MB 0.1% hourly.2 /var 1237MB 10.4% 8MB 0.1% hourly.3 /var 1237MB 10.4% 8MB 0.1% hourly.4 /var 1237MB 10.4% 8MB 0.1% hourly.5 /var 1237MB 10.4% 8MB 0.1% hourly.6 /var 1237MB 10.4% 8MB 0.1% hourly.7 /var 1237MB 10.4% 8MB 0.1% hourly.8 /var 1237MB 10.4% 8MB 0.1% hourly.9 /var 1237MB 10.4% 25MB 0.2% weekly.0 /usr 87545MB 74.1% 138MB 0.1% daily.0 /usr 87545MB 74.1% 217MB 0.2% daily.1 /usr 87545MB 74.1% 234MB 0.2% daily.2 /usr 87545MB 74.1% 287MB 0.2% daily.3 /usr 87545MB 74.1% 292MB 0.2% daily.4 /usr 87545MB 74.1% 278MB 0.2% daily.5 /usr 87545MB 74.1% 349MB 0.3% daily.6 /usr 87545MB 74.1% 88MB 0.1% hourly.0 /usr 87545MB 74.1% 200MB 0.2% hourly.1 /usr 87545MB 74.1% 864MB 0.7% weekly.0 /usr 87545MB 74.1% 721MB 0.6% weekly.1 /usr 87545MB 74.1% 782MB 0.7% weekly.2 /usr 87545MB 74.1% 4772MB 4.0% weekly.3 I am eager and willing to assist in anyway to investigate and eliminate this issue. -- Regards, Doug