From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oliver Martin Subject: Re: Spontaneous rebuild Date: Mon, 03 Dec 2007 03:35:51 +0100 Message-ID: <47536B87.2040708@student.tuwien.ac.at> References: <475230AF.3010100@student.tuwien.ac.at> <18259.15453.811495.461016@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <18259.15453.811495.461016@notabene.brown> Sender: linux-raid-owner@vger.kernel.org To: Neil Brown Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids Neil Brown schrieb: > > This isn't a resync, it is a data check. "Dec 2" is the first Sunday > of the month. You probably have a crontab entries that does > echo check > /sys/block/mdX/md/sync_action > > early on the first Sunday of the month. I know that Debian does this. > > It is good to do this occasionally to catch sleeping bad blocks. > Duh, thanks for clearing this up. I guess what set the alarm off was getting what looked like a rebuild to me while stress testing. Yes, I'm running Debian and I have exactly this entry in my crontab... Perhaps they should add a short log entry like "starting periodic RAID check" so that people know there is nothing to worry about. Or maybe I should just RTFC (read the fine crontab) ;-) Oliver