From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Greaves Subject: Re: raid issues after power failure Date: Sun, 02 Jul 2006 10:26:18 +0100 Message-ID: <44A7913A.1050409@dgreaves.com> References: <49954.82.141.169.118.1151658773.squirrel@mail.tyrell.hu> <49971.82.141.169.118.1151659502.squirrel@mail.tyrell.hu> <17573.44678.188170.409349@cse.unsw.edu.au> <44A69496.9030109@tyrell.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Francois Barre Cc: Neil Brown , =?ISO-8859-1?Q?=C1kos_Mar=F3y?= , linux-raid List-Id: linux-raid.ids =46rancois Barre wrote: > 2006/7/1, =C1kos Mar=F3y : >> Neil Brown wrote: >> > Try adding '--force' to the -A line. >> > That tells mdadm to try really hard to assemble the array. >> >> thanks, this seems to have solved the issue... >> >> >> Akos >> >> >=20 > Well, Neil, I'm wondering, > It seemed to me that Akos' description of the problem was that > re-adding the drive (with mdadm not complaining about anything) would > trigger a resync that would not even start. > But as your '--force' does the trick, it implies that the resync was > not really triggered after all without it... Or did I miss a bit of > log Akos provided that did say so ? > Could there be a place here for an error message ? >=20 > More generally, could it be usefull to build up a recovery howto, > based on the experiences on this list (I guess 90% of the posts a > related to recoveries) ? > Not in terms of a standard disk loss, but in terms of a power failure > or a major disk problem. You know, re-creating the array, rolling the > dices, and *tada !* your data is back again... I could not find a bit > of doc about this. >=20 =46rancois, I have started to put a wiki in place here: http://linux-raid.osdl.org/ My reasoning was *exactly* that - there is reference information for md but sometimes the incantations need a little explanation and often the diagnostics are not obvious... I've been subscribed to linux-raid since the middle of last year and I've been going through old messages looking for nuggets to base some docs around. I haven't had a huge amount of time recently so I've just scribbled on it for now - I wanted to present something a little more polished to th= e community - but since you're asking... So don't consider this an official announcement of a useable work yet - more a 'Please contact me if you would like to contribute' (just so I can keep track of interested parties) and we can build something up... David - To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html