From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bill Davidsen Subject: Re: mdadm feature suggestion Date: Fri, 09 May 2008 11:06:57 -0400 Message-ID: <48246891.7030501@tmr.com> References: <481EF5A5.3030501@serverleih.de> <18463.50756.193011.129733@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <18463.50756.193011.129733@notabene.brown> Sender: linux-raid-owner@vger.kernel.org To: Neil Brown Cc: Denis Klimek , linux-raid@vger.kernel.org List-Id: linux-raid.ids Neil Brown wrote: > On Monday May 5, denis@serverleih.de wrote: > >> Hello, >> >> I've written a "mdadm2sms", which sends me SMS to my mobilephone when >> something happens to raid. >> Yesterday I've got a sms / also written into syslog (standard), that a >> rebuild has been started, just for data-checking. My suggestion is now, >> it is possible to add 3 more Events just for this DataCheck event? Like >> DataCheckStarted, CheckStarted, CheckedFinished and Check20-100 or >> something? Cause the problem is, you can't trigger a regulary >> mdadm-datacheck without using syslog. It would be very nice, when it >> would be possible to trigger a Datacheck with a event command. >> >> > > I'm sorry, but I don't understand what you are asking for. > > When a data-check is run, it should generate events just like when a > resync or recovery is run. These will be passed to any --program that > you give to mdadm --monitor. > In that program you can differentiate between > data-check/resync/recovery by looking in /proc/mdstat. > > Do you want the events to be different for the different types of > 'resync' (check/sync/recover)?? So you can get an SMS on a resync > start but not on a data-check start? Is that it? > > I don't understand > "It would be very nice, when it would be possible to trigger a > Datacheck with a event command. " > at all. How would an event command trigger a Datacheck??? > I would handle this by configuring syslog to write to a fifo, then running a daemon to read the messages and send whatever SMS you like. I do this on my mail server and firewall systems, both do adaptive configuration of the iptables firewall based on behavior of connected hosts. See syslog.conf, the "|" feature. My daemon is a perl script which just sucks on the fifo (see mkdev) for the information to process. -- Bill Davidsen "Woe unto the statesman who makes war without a reason that will still be valid when the war is over..." Otto von Bismark