From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Masover Subject: Re: the " 'official' point of view" expressed by kernelnewbies.org Date: Tue, 15 Aug 2006 17:27:32 -0500 Message-ID: <44E24A54.4010604@slaphack.com> References: <44E24563.1040900@namesys.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com In-Reply-To: <44E24563.1040900@namesys.com> List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Edward Shishkin Cc: Tom Reinhart , reiserfs-list@namesys.com Edward Shishkin wrote: > Tom Reinhart wrote: >> Anyone with serious need for data integrity already uses RAID, so why >> add brand new complexity for a solved problem? >> >> RAID is great at recovering data, but not detecting errors. File >> system can detect errors with checksum. What is missing is an API >> between layers for filesystem to say "this sector is bad, go rebuild it." >> > > Actually we dont need a special API: kernel should warn and recommend > running fsck, which scans the whole tree and handles blocks with bad > checksums. What does this have to do with RAID, though?