They both use checksums and can provide self-healing data.
--Bill On Tue, Nov 28, 2006 at 02:54:56PM -0700, Jason J. W. Williams wrote: > Do both RAID-Z and Mirror redundancy use checksums on ZFS? Or just RAID-Z? > > Thanks in advance, > J > > On 11/28/06, David Dyer-Bennet <[EMAIL PROTECTED]> wrote: > >On 11/28/06, Elizabeth Schwartz <[EMAIL PROTECTED]> wrote: > >> So I rebuilt my production mail server as Solaris 10 06/06 with zfs, it > >ran > >> for three months, and it's had no hardware errors. But my zfs file system > >> seems to have died a quiet death. Sun engineering response was to point > >to > >> the FMRI, which says to throw out the zfs partition and start over. I'm > >real > >> reluctant to do that, since it'll take hours to do a tape restore, and we > >> don't know what's wrong. I'm seriously wondering if I should just toss > >zfs. > >> Again, this is Solaris 10 06/06, not some beta version. It's an older > >> server, a 280R with an older SCSI RaidKing > > > >Looks to me like another example of ZFS noticing and reporting an > >error that would go quietly by on any other filesystem. And if you're > >concerned with the integrity of the data, why not use some ZFS > >redundancy? (I'm guessing you're applying the redundancy further > >downstream; but, as this situation demonstrates, separating it too far > >from the checksum verification makes it less useful.) > >-- > >David Dyer-Bennet, <mailto:[EMAIL PROTECTED]>, <http://www.dd-b.net/dd-b/> > >RKBA: <http://www.dd-b.net/carry/> > >Pics: <http://www.dd-b.net/dd-b/SnapshotAlbum/> > >Dragaera/Steven Brust: <http://dragaera.info/> > >_______________________________________________ > >zfs-discuss mailing list > >zfs-discuss@opensolaris.org > >http://mail.opensolaris.org/mailman/listinfo/zfs-discuss > > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
