You said this: " - as everybody has pointed out .. bad data ( disk errors ) can occur for any number of gazillion reasons have fun raiding Alvin" Bad data is not caused by disk errors. This seemed like you were blaming the hard disk. I understand you now. It seems we agree! Guy -----Original Message----- From: Alvin Oga [mailto:aoga@xxxxxxxxxxxxxxxxxxxxxxx] Sent: Wednesday, January 05, 2005 12:22 PM To: Guy Cc: 'Alvin Oga'; linux-raid@xxxxxxxxxxxxxxx Subject: RE: ext3 journal on software raid (was Re: PROBLEM: Kernel 2.6.10 crashing repeatedly and hard) hi ya guy On Wed, 5 Jan 2005, Guy wrote: > RAID does not cause bad data! again .. that's not what i said .. the point i've been tring to say .. one MUST figure out "exactly" where the bad data or errors or crashes are coming from it will usually be bad ("cheap") parts or operator error or simple "slapped" together boxes > Bad data can get on any disk, even if it is part of a RAID system. > The bad data does not come from the hard disk, CRCs prevent that. > > The problem is: Where does the bad data come from? > Bad memory? No, everyone use ECC memory, right? that's what i was saying... but you do a better job even if one uses ecc... ecc can only fix certain errors, and non-correctable errors are flagged and not fixed ( burst errors are hard to fix ) and people that use ecc memory ... usually have higher-end motherboards and more memory in the system vs the $50 motherboard+cpu combo (disasters) from fries ( a local pc store ) c ya alvin - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
