From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id EFDA51384C0 for ; Sun, 30 Aug 2015 15:55:27 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id AA5D6E0878; Sun, 30 Aug 2015 15:55:02 +0000 (UTC) Received: from mail-wi0-f173.google.com (mail-wi0-f173.google.com [209.85.212.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 6E979E086D for ; Sun, 30 Aug 2015 15:55:01 +0000 (UTC) Received: by widfa3 with SMTP id fa3so1374041wid.1 for ; Sun, 30 Aug 2015 08:55:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-type:content-transfer-encoding; bh=lydX2G72JbvhnQBwpgLyISKRzsTm0ca/6/aInGU5PNM=; b=bTyOk2y7ZY8wCGjjD2534/MTiDiHeAC2VjZn+E1zf6+aqG76wRxuAiVxrDNYoHtEwk BTZ0REgvWrSSiur0+m/D6JDAAzXv3cxRfWIpEhut+W5NokF2pNM3HufY5SkJf0GAUkd5 YgkleF191tWiCLyFt//ylT7VEnHBahGRLcp4Mrr1itoPPsc+59CbMeh56pEGD0belzbw bLvSHClxm5OdS+ESHYy0xJFqqb8VvmAdJGr5DSOQjbiI56Kr3J91GyJ5rDxbQntRmym4 sBFFuNl0HZ4tFOxii+oPEHqzfU5r5knPu/jfATYI5gJ+b9IZ3PsoiMKC2yj2rmvyUWSV KlbA== X-Received: by 10.194.77.70 with SMTP id q6mr22424719wjw.70.1440950100359; Sun, 30 Aug 2015 08:55:00 -0700 (PDT) Received: from [172.20.0.41] ([105.210.27.19]) by smtp.googlemail.com with ESMTPSA id s9sm14050105wjy.16.2015.08.30.08.54.58 for (version=TLSv1/SSLv3 cipher=OTHER); Sun, 30 Aug 2015 08:54:59 -0700 (PDT) Subject: Re: [gentoo-user] system uptime To: gentoo-user@lists.gentoo.org References: <20150830040443.GA1081@ca.inter.net> <55E303F0.5010709@comcast.net> <55E32038.1080204@gmail.com> From: Alan McKinnon Message-ID: <55E32748.6040603@gmail.com> Date: Sun, 30 Aug 2015 17:54:48 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 In-Reply-To: <55E32038.1080204@gmail.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Archives-Salt: 868b1943-d567-487e-b8f8-0dd111cdf02a X-Archives-Hash: 2fff8eaedfdf11107e37932df6ac438d On 30/08/2015 17:24, Daniel Frey wrote: > On 08/30/2015 06:24 AM, Michel Catudal wrote: >> >> As for shutdowns there are several arguments for and against. What often >> kills electronic is the shock between hot and cold so there is an >> argument about keeping the system on. >> Whether it is always safe to keep the computer on all the time remains >> to be proven. > > Recently I've had to help someone migrate off of a failed computer. This > computer was old (I had to find an IDE adapter to recover some files) > from late 90s/early 00s. > > Some time ago I told him to have it running all the time, mostly because > of age. So he kept it running nonstop and literally a week or two ago > shut it down as he was getting new flooring installed. He called me > after hooking it back up again as it wouldn't start. I went over to > check and the motherboard finally failed. He hadn't powered it off in > 4-5 years. > > For myself I use a smart power bar and suspend my PC when not in use. > This caused me all sorts of grief with systemd hanging on shutdown after > a suspend, ultimately causing my RAID array to be rebuilt on every > reboot/shutdown and so I've finally abandoned it and am running openrc > again. > > The only thing about using suspend is that if the PC is in a sleep state > it won't wake up and shut down when the power goes out. This just > happened to me yesterday (big wind storm here.) One of the reasons sysadmins have old servers out there that still have huge uptimes, is that we dare not switch them off. We don't know if the drives will spin up again from cold! Technically, we should do a power down test every 6 months or so, but that turns out not to be a yes/no test in real life; it's a yes/destroy test and no-one wants to make a decision either way. So we all sit in limbo and wait for some exterior event to decide for us (like black-outs) Sad, init? -- Alan McKinnon alan.mckinnon@gmail.com