From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brad Campbell Subject: Re: RAID5 - 2nd drive died whilst waiting for RMA Date: Wed, 17 Nov 2004 15:44:04 +0400 Message-ID: <419B3984.4060601@wasp.net.au> References: <200411132039.iADKdDN07474@www.watkins-home.com> <41968282.6060306@dgreaves.com> <4198DF79.8080809@dgreaves.com> <41999A9B.2000907@wasp.net.au> <419B3435.3080707@dgreaves.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: =?ISO-8859-1?Q?M=E5ns_Rullg=E5rd?= Cc: David Greaves , Guy , linux-raid@vger.kernel.org, linux-ide@vger.kernel.org List-Id: linux-raid.ids M=E5ns Rullg=E5rd wrote: > David Greaves writes: >=20 >=20 >>I've been tracking this on the ide list and I've been nervous of >>applying anything since I don't have proper backups. I'm relying on >>redundancy. >=20 > > RAID can *never* replace proper backups. RAID only protects against > low-level disk failures. Filesystem corruption caused by bugs, > accidental deleting of files, etc. are happily allowed. Get a DVD > burner, you'll thank yourself one day. >=20 Heh. I have 2.5TB here. Thats a lot of DVD's. I have the whole lot set chmod a-w and rely on RAID to keep me alive. (= Having said it is a home=20 entertainment system and would not cause mega dollar industrial damage = if I lost it). All my=20 original media is about 9,000km away but I could survive until I re-rip= ped it. I slide my array drives out and slide in some throwaway spares to beat = on for testing before I=20 deploy a new kernel. David Greaves wrote: >=20 > I looked to see what I'd need to do and given I'm running 2.6.9 I tak= e it I'd have to apply: > =20 > http://www.kernel.org/pub/linux/kernel/people/jgarzik/libata/2.6.9-li= bata1-dev1.patch.bz2 > which depends on > =20 > http://www.kernel.org/pub/linux/kernel/people/jgarzik/libata/2.6.9-li= bata1.patch.bz2 >=20 > That seems like quite a lot and I'm not clear on the level of stabili= ty impact on my system. >=20 > Now although I track linux-ide I doubt I'm fully informed!! > So if anyone would like to inform me of a reasonable course of action= then I'm actually reasonably happy to apply the SMART patch. That is pretty close. I actually just cloned the kernel bk tree and pul= led both of Jeffs trees, but=20 then I ran about 10 hours of super intensive tests with 5 spare drives = spread across my 3=20 controllers before I slid my 13 raid disks back in and let it loose. I = guess my real kernel version=20 is somewhere around 2.6.10-rc1-bk3. Have had good luck with it over the last couple of weeks and I have bee= n hitting it pretty hard.=20 But, as I said before, I'm on a UP machine. Andy pointed out some possi= ble issues on SMP so beware=20 there. Brad - 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