From owner-freebsd-current@FreeBSD.ORG Thu Jun 11 23:13:53 2015 Return-Path: Delivered-To: freebsd-current@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 79DE7E78 for ; Thu, 11 Jun 2015 23:13:53 +0000 (UTC) (envelope-from henry.hu.sh@gmail.com) Received: from mail-pa0-x22e.google.com (mail-pa0-x22e.google.com [IPv6:2607:f8b0:400e:c03::22e]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 48D051A0A for ; Thu, 11 Jun 2015 23:13:53 +0000 (UTC) (envelope-from henry.hu.sh@gmail.com) Received: by padev16 with SMTP id ev16so10812069pad.0 for ; Thu, 11 Jun 2015 16:13:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-type; bh=7cjRS6MxkFQEy7mDiLXb7FLcdsNfwa5glj7kaA/essk=; b=BgeYNl2zwByxCiNwK6KSzd1R6vtAlJpPOC37xMptjSHwcq1xpMdwEFnhRE6u3BO+k4 Hx1OIbbJMRwu3hg4O0pF5BBYTQWv03zSNu8uLRbd/jV9KHP5MLsPxoyjyTyLBWQgQms3 0JhRHg0PQo+ZCNmO3rHLQrG/jhtRZq0mchUHbqZu5EfoRZDAXPffft1c/bhDsUkloFvj 4MSkWMq6aTgVFYYF5Rizj1gPsVsKd8vsC+E5CNtBeqdH1C+K0hKUcT/vRB7bGW6jknfX s+qaFzdTvBcTPUou6gnzIfiIT+8CuJIrG4ebjIZlGehkQlnTVmeiY4S9Edq/occdtjgr Y03g== X-Received: by 10.68.131.225 with SMTP id op1mr18166420pbb.86.1434064432744; Thu, 11 Jun 2015 16:13:52 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Henry Hu Date: Thu, 11 Jun 2015 23:13:41 +0000 Message-ID: Subject: Re: Slow shutdown To: Kevin Oberman , "Ranjan1018 ." <214748mv@gmail.com> Cc: Garrett Cooper , FreeBSD CURRENT Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 11 Jun 2015 23:13:53 -0000 On Thu, Jun 11, 2015 at 1:55 PM Kevin Oberman wrote: > On Thu, Jun 11, 2015 at 1:50 AM, Ranjan1018 . <214748mv@gmail.com> wrote: > > > 2015-05-24 22:33 GMT+02:00 Garrett Cooper : > > > > > On May 24, 2015, at 6:33, Ranjan1018 . <214748mv@gmail.com> wrote: > > > > > > > On my laptop running r283297, after the message =E2=80=9CAll buffer= s synced.=E2=80=9D > > and > > > > before =E2=80=9CUptime: =E2=80=A6..=E2=80=9D it takes more than 55 = seconds. > > > > > > Not a lot of info here to diagnose your issue... > > > - What happens if you hit control-t, i.e. what wait channel does it > print > > > out? > > > - What filesystems do you have mounted (fuse, NFS, UFS, ZFS)? > > > - What=E2=80=99s your root media (SSDs, SATA/PATA hard drives, etc)? > > > > > > Thanks.. > > > > > > > Solved ! > > > > The slow shutdown is caused by some remote smbfs shares mounted via > > openvpn: the remote drives are unmounted after the openvpn daemon > > termination, this induces some long timeout. The solution is to unmount > the > > smbfs shares in a shutdown script before the openvpn daemon termination= . > I > > have discovered this issue with this =E2=80=98dirty=E2=80=99 patch that= displays the > > unmounted fs at shutdown: > > > > http://pastebin.com/Xfiz9nsv > > > > With this patch shutting down my laptop appear as: > > > > > > > https://drive.google.com/file/d/0BzoWQoMqq1sfcHZyRnlEeTRobFU/view?usp=3Ds= haring > > . > > > > For testing the the patch apply it in /sys/kern, rebuild and install th= e > > kernel. > > > > Set the new OID: > > > > # sysctl kern.shutdown.show_umountfs=3D1 > > > > Halt the system: > > > > # shutdown -h now > > > > Regards, > > > > Maurizio > > _______________________________________________ > > freebsd-current@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-current > > To unsubscribe, send any mail to " > freebsd-current-unsubscribe@freebsd.org" > > > The same issue exists in fusefs, but has an uglier result. The fuse daemo= n > shuts down before any fusefs based file systems are unmounted, but, for > several R/W file systems including NTFS and exFAT, the result is a corrup= t > file system. I did the same thing to work around this problem... an init > script, but I wonder if this should not be handled in some cleaner and mo= re > global manner. (No, I have no idea right now of how to implement this.) > I think that I've hit this problem several times, because I've lost files on my NTFS portable harddisk several times. Now I force an unmount in the shutdown script. I remember that when fuse module was still in fusefs-kmod, the rc script unmounts the file systems, and there's even a _safe flag to ensure safety. -- > Kevin Oberman, Network Engineer, Retired > E-mail: rkoberman@gmail.com > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org= "