Date: Wed, 20 Jun 2012 18:44:15 -0400 From: Rich <rercola@pha.jhu.edu> To: Steven Hartland <killing@multiplay.co.uk> Cc: freebsd-fs@freebsd.org, rondzierwa@comcast.net Subject: Re: ZFS Checksum errors Message-ID: <CAOeNLurQ2KHJXy2oPTJ0tUmnQ3pQgZVsCacfr-V_1f83_aoM4A@mail.gmail.com> In-Reply-To: <B67850BEEBB54EA9BB58AECDDDA5643F@multiplay.co.uk> References: <566221263.21373.1340225701396.JavaMail.root@sz0192a.westchester.pa.mail.comcast.net> <B67850BEEBB54EA9BB58AECDDDA5643F@multiplay.co.uk>
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I can't speak for every case, but in my experience, that's what happens if the corrupted data points to something that no longer exists because it was deleted or similar - as an example I don't recommend trying, you could figure out which on-disk blocks map to a test file, scramble some of them beyond repair on enough disks to be unrecoverable, do a scrub, and it'll report that file as lost - delete the file, the reference will change to a pointer with no name. - Rich On Wed, Jun 20, 2012 at 5:17 PM, Steven Hartland <killing@multiplay.co.uk> wrote: > Sorry not seen that before I'm afraid. Maybe you can use zdb to get more info but sounds like something is causing nasty issues. > > I'd check your machine for bad hardware issues such as bad ram, cpu or cabling issues. > > Regards > Steve > ----- Original Message ----- > From: rondzierwa@comcast.net > To: Steven Hartland > Cc: freebsd-fs@freebsd.org > Sent: Wednesday, June 20, 2012 9:55 PM > Subject: Re: ZFS Checksum errors > > > Steve. > > well, it got done, and it found another anonymous file with errors. any idea how to get rid of these? > > thanks, > ron. > > > > phoenix# zpool status -v zfsPool > pool: zfsPool > state: ONLINE > status: One or more devices has experienced an error resulting in data > corruption. Applications may be affected. > action: Restore the file in question if possible. Otherwise restore the > entire pool from backup. > see: http://www.sun.com/msg/ZFS-8000-8A > scrub: scrub completed after 8h29m with 6276 errors on Wed Jun 20 16:18:01 2012 > config: > > NAME STATE READ WRITE CKSUM > zfsPool ONLINE 0 0 6.17K > da0 ONLINE 0 0 13.0K 1.34M repaired > > errors: Permanent errors have been detected in the following files: > > zfsPool/raid:<0x9e241> > zfsPool/Build:<0x0> > phoenix# > > > > > > ------------------------------------------------------------------------------ > From: "Steven Hartland" <killing@multiplay.co.uk> > To: rondzierwa@comcast.net, freebsd-fs@freebsd.org > Sent: Wednesday, June 20, 2012 1:58:20 PM > Subject: Re: ZFS Checksum errors > > ----- Original Message ----- > From: <rondzierwa@comcast.net> > .. > > > zpool status indicates that a file has errors, but doesn't tell me its name: > > > > phoenix# zpool status -v zfsPool > > pool: zfsPool > > state: ONLINE > > status: One or more devices has experienced an error resulting in data > > corruption. Applications may be affected. > > action: Restore the file in question if possible. Otherwise restore the > > entire pool from backup. > > see: http://www.sun.com/msg/ZFS-8000-8A > > scrub: scrub in progress for 5h27m, 18.71% done, 23h42m to go > > Try waiting for the scrub to complete and see if its more helpful after that. > > Regards > Steve > > ================================================ > This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. > > In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 > or return the E.mail to postmaster@multiplay.co.uk. > > > > ================================================ > This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. > > In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 > or return the E.mail to postmaster@multiplay.co.uk. > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org"help
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