From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Breidenbach Subject: Re: disk or reiserfs problem? Date: Mon, 2 Jun 2003 13:00:36 PDT Message-ID: <1054584035.21053.65.camel@rode> References: <20030529054511.GA30925@namesys.com> <3EDB9910.7040005@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: <3EDB9910.7040005@namesys.com> List-Id: Content-Type: text/plain; charset="us-ascii" To: Hans Reiser Cc: Oleg Drokin , reiserfs-list@namesys.com Well, I retrieved the disk from the colocation facility - it is basically totalled. BIOS and the linux kernel make about 5 attempts each at spinning up the drive. It spins up then spins down after a few seconds. No software tool in the worldwill get data off a disk that isn't spinning. I gave up, bought a new disk, and am restoring from backups. Incidentally, during the restoration I find that cp is giving a throughput of about 1 MB/s when copying from harddrive to harddrive. Both source and destination disks use reiserfs and hdparm -tT reports about 50MB/s read rate. Is a 1MB/s throughput expected when copying many small files? (There is a lot of data involved, so I probably have a couple of days to ponder the question.) Cheers, Jeff On Mon, 2003-06-02 at 11:36, Hans Reiser wrote: > Oleg Drokin wrote: > > >Hello! > > > >On Wed, May 28, 2003 at 01:07:27PM -0700, Jeff Breidenbach wrote: > > > > > >>This is after a hard (power switch) reboot (due to I/O errors). The > >>disk in question has about 125 GB of data on a single 200GB reiserfs > >>partition. Do people think the disk is toast, or is this possibly some > >>correctable filesystem problem? The machine is remote, so I can't > >>hdb1: bad access: block=35, count=5 > >>end_request: I/O error, dev 03:41 (hdb), sector 35 > >> > >> > > > >Looks like disk have gone bad. If you are lucky enough, some of the data > >still can be recovered. Try to copy entire disk into a file/to another > >disk to see how much bad sectors are there. > > > >Bye, > > Oleg > > > > > > > > > You should provide more details in such advice, such as telling him > about dd_rescue and why it is better than dd, etc. You should also > explain that if it is only a few blocks that are bad, writing to the bad > blocks can make them go away most of the time (the drive will remap them). -- Jeff Breidenbach Member of Research Staff, PARC