Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932904Ab2JWJwk (ORCPT ); Tue, 23 Oct 2012 05:52:40 -0400 Received: from gwu.lbox.cz ([62.245.111.132]:58882 "EHLO gwu.lbox.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932695Ab2JWJwh (ORCPT ); Tue, 23 Oct 2012 05:52:37 -0400 X-Greylist: delayed 376 seconds by postgrey-1.27 at vger.kernel.org; Tue, 23 Oct 2012 05:52:37 EDT Date: Tue, 23 Oct 2012 11:43:51 +0200 From: Nikola Ciprich To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Cc: nikola.ciprich@linuxbox.cz Subject: BUG: enabling psacct breaks fsfreeze Message-ID: <20121023094351.GC27919@pcnci.linuxbox.cz> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="2/5bycvrmDh4d1IB" Content-Disposition: inline User-Agent: Mutt/1.5.21 (2011-07-01) X-Antivirus: on lbxovapx by Kaspersky antivirus, 7874937 records (last update: 20121023) X-Spam-Score: N/A (imported whitelist) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1590 Lines: 59 --2/5bycvrmDh4d1IB Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, while trying to create consistent backups of KVM guest, I've discovered that fsfreeze always hangs.. deeper investigation revealed psacct to be the= culprit. When psacct is disabled, fsfreeze works fine, when enabled, the command nev= er returns. I suppose that the problem is /var is not on separate partition (ie it's sa= me volume as /) and psacct isn't able to dump process exit information about fsfreeze= command thus creating deadlock.. problem is 100% reproducible on both latest 3.0.x kernel and 3.7-r1c. Should more debugging information be needed, I'll be glad to provide whatev= er I can.. BR nik --=20 ------------------------------------- Ing. Nikola CIPRICH LinuxBox.cz, s.r.o. 28.rijna 168, 709 00 Ostrava tel.: +420 591 166 214 fax: +420 596 621 273 mobil: +420 777 093 799 www.linuxbox.cz mobil servis: +420 737 238 656 email servis: servis@linuxbox.cz ------------------------------------- --2/5bycvrmDh4d1IB Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (GNU/Linux) iEYEARECAAYFAlCGZtcACgkQ3xdJJrLygV4RngCgiDwK0gQxqNx528p2/+nmP00f WRsAn2+tZXOUn4u33DbwQZShYn8HMeJF =0+d0 -----END PGP SIGNATURE----- --2/5bycvrmDh4d1IB-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/