Received: from maia.hub.org (maia-5.hub.org [200.46.204.29]) by mail.postgresql.org (Postfix) with ESMTP id 481341337BCC for ; Fri, 8 Apr 2011 02:56:06 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.29]) (amavisd-maia, port 10024) with ESMTP id 16858-03 for ; Fri, 8 Apr 2011 05:55:55 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from mx3.wp.pl (mx3.wp.pl [212.77.101.7]) by mail.postgresql.org (Postfix) with ESMTP id 9FB34133616B for ; Fri, 8 Apr 2011 02:55:54 -0300 (ADT) Received: (wp-smtpd smtp.wp.pl 12046 invoked from network); 8 Apr 2011 07:55:52 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wp.pl; s=1024a; t=1302242152; bh=WnZxBkIEmCWZKLaPKis9cW9uifAJgV6LpdlFmpkJpRk=; h=From:To:Subject; b=IsPTggl1sqeE9GeSXYkyjuGZv1tEdmCL5KXfbafWuKNXlpG4hIwmUQqMQvxWXJB62 n2LfWfEfkx9wydQtUywQc+z9VpOndPsLRbtzu6utlA0cx/m+e3JwiAlJZnoQLlYAs6 tdP3Rmmjc9NHMohmIyWlHHo/Uj36jxw+uDwnu6dw= Received: from abbj66.neoplus.adsl.tpnet.pl (HELO [10.0.0.101]) (ipluta@[83.6.199.66]) (envelope-sender ) by smtp.wp.pl (WP-SMTPD) with AES256-SHA encrypted SMTP for ; 8 Apr 2011 07:55:52 +0200 Message-ID: <4D9EA367.7060102@wp.pl> Date: Fri, 08 Apr 2011 07:55:51 +0200 From: Ireneusz Pluta User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; pl; rv:1.9.2.15) Gecko/20110303 Lightning/1.0b2 Thunderbird/3.1.9 MIME-Version: 1.0 To: pgsql-performance@postgresql.org Subject: Re: Background fsck References: <4D9CEA3F.5050603@wp.pl> <201104071701.02647.achill@matrix.gatewaynet.com> In-Reply-To: <201104071701.02647.achill@matrix.gatewaynet.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-WP-AV: skaner antywirusowy poczty Wirtualnej Polski S. A. X-WP-SPAM: NO 0000000 [oVNk] X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-1.899 tagged_above=-10 required=5 tests=BAYES_00=-1.9, FREEMAIL_FROM=0.001, T_RP_MATCHES_RCVD=-0.01, T_TO_NO_BRKTS_FREEMAIL=0.01 X-Spam-Level: X-Archive-Number: 201104/78 X-Sequence-Number: 43140 Achilleas Mantzios wrote: > > In anyway, having FreeBSD to fsck, (background or not) should not happen. And the problem > becomes bigger when cheap SATA drives will cheat about their write cache being flushed to the disk. > So in the common case with cheap hardware, it is wise to have a UPS connected and being monitored > by the system. > It's not lack of UPS. Power issues are taken care of here. It's a buggy 3ware controller which hangs the machine ocassionally and the only way to have it come back is to power cycle, hard reset is not enough.