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 ca= bling issues. > > =C2=A0 =C2=A0Regards > =C2=A0 =C2=A0Steve > =C2=A0----- Original Message ----- > =C2=A0From: rondzierwa@comcast.net > =C2=A0To: Steven Hartland > =C2=A0Cc: freebsd-fs@freebsd.org > =C2=A0Sent: Wednesday, June 20, 2012 9:55 PM > =C2=A0Subject: Re: ZFS Checksum errors > > > =C2=A0Steve. > > =C2=A0well, it got done, and it found another anonymous file with errors.= =C2=A0any idea how to get rid of these? > > =C2=A0thanks, > =C2=A0ron. > > > > =C2=A0phoenix# zpool status -v zfsPool > =C2=A0 =C2=A0pool: zfsPool > =C2=A0 state: ONLINE > =C2=A0status: One or more devices has experienced an error resulting in d= ata > =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0corruption. =C2=A0Applications may be a= ffected. > =C2=A0action: Restore the file in question if possible. =C2=A0Otherwise r= estore the > =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0entire pool from backup. > =C2=A0 =C2=A0 see: http://www.sun.com/msg/ZFS-8000-8A > =C2=A0 scrub: scrub completed after 8h29m with 6276 errors on Wed Jun 20 = 16:18:01 2012 > =C2=A0config: > > =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0NAME =C2=A0 =C2=A0 =C2=A0 =C2=A0STATE = =C2=A0 =C2=A0 READ WRITE CKSUM > =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0zfsPool =C2=A0 =C2=A0 ONLINE =C2=A0 =C2= =A0 =C2=A0 0 =C2=A0 =C2=A0 0 6.17K > =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0da0 =C2=A0 =C2=A0 =C2=A0 ONLINE = =C2=A0 =C2=A0 =C2=A0 0 =C2=A0 =C2=A0 0 13.0K =C2=A01.34M repaired > > =C2=A0errors: Permanent errors have been detected in the following files: > > =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0zfsPool/raid:<0x9e241> > =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0zfsPool/Build:<0x0> > =C2=A0phoenix# > > > > > > -------------------------------------------------------------------------= ----- > =C2=A0From: "Steven Hartland" <killing@multiplay.co.uk> > =C2=A0To: rondzierwa@comcast.net, freebsd-fs@freebsd.org > =C2=A0Sent: Wednesday, June 20, 2012 1:58:20 PM > =C2=A0Subject: Re: ZFS Checksum errors > > =C2=A0----- Original Message ----- > =C2=A0From: <rondzierwa@comcast.net> > =C2=A0.. > > =C2=A0> zpool status indicates that a file has errors, but doesn't tell m= e its name: > =C2=A0> > =C2=A0> phoenix# zpool status -v zfsPool > =C2=A0> pool: zfsPool > =C2=A0> state: ONLINE > =C2=A0> status: One or more devices has experienced an error resulting in= data > =C2=A0> corruption. Applications may be affected. > =C2=A0> action: Restore the file in question if possible. Otherwise resto= re the > =C2=A0> entire pool from backup. > =C2=A0> see: http://www.sun.com/msg/ZFS-8000-8A > =C2=A0> scrub: scrub in progress for 5h27m, 18.71% done, 23h42m to go > > =C2=A0Try waiting for the scrub to complete and see if its more helpful a= fter that. > > =C2=A0 =C2=A0 =C2=A0Regards > =C2=A0 =C2=A0 =C2=A0Steve > > =C2=A0=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D > =C2=A0This e.mail is private and confidential between Multiplay (UK) Ltd.= and the person or entity to whom it is addressed. In the event of misdirec= tion, the recipient is prohibited from using, copying, printing or otherwis= e disseminating it or any information contained in it. > > =C2=A0In the event of misdirection, illegible or incomplete transmission = please telephone +44 845 868 1337 > =C2=A0or return the E.mail to postmaster@multiplay.co.uk. > > > > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > This e.mail is private and confidential between Multiplay (UK) Ltd. and t= he person or entity to whom it is addressed. In the event of misdirection, = the recipient is prohibited from using, copying, printing or otherwise diss= eminating 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"
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