On Wed, Jun 28, 2006 at 02:23:32PM +0200, Robert Milkowski wrote: > Hello przemolicc, > > Wednesday, June 28, 2006, 10:57:17 AM, you wrote: > > ppf> On Tue, Jun 27, 2006 at 04:16:13PM -0500, Al Hopper wrote: > >> Case in point, there was a gentleman who posted on the Yahoo Groups solx86 > >> list and described how faulty firmware on a Hitach HDS system damaged a > >> bunch of data. The HDS system moves disk blocks around, between one disk > >> and another, in the background, to optimized the filesystem layout. Long > >> after he had written data, blocks from one data set were intermingled with > >> blocks for other data sets/files causing extensive data corruption. > > ppf> Al, > > ppf> the problem you described comes probably from failures in code of > firmware > ppf> not the failure of disk surface. Sun's engineers can also do some > mistakes > ppf> in ZFS code, right ? > > But the point is that ZFS should detect also such errors and take > proper actions. Other filesystems can't.
Does it mean that ZFS can detect errors in ZFS's code itself ? ;-) What I wanted to point out is the Al's example: he wrote about damaged data. Data were damaged by firmware _not_ disk surface ! In such case ZFS doesn't help. ZFS can detect (and repair) errors on disk surface, bad cables, etc. But cannot detect and repair errors in its (ZFS) code. I am comparing firmware code to ZFS code. przemol _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
