[OpenIndiana-discuss] ZFS single drive CKSUM errors

[Mike Gerdts]

On Sat, Jan 22, 2011 at 4:08 PM, Michelle Knight <michelle at msknight.com> wrote:
> Hi Folks,
>
> Something I don't understand.
>
> A single drive with a ZFS partition on it. No mirror, no raid, no nothing.
>
> I copied a load of files to it and did a scrub.
>
> It encountered six checksum errors and was able to recover from them ...
> without having any mirror or other redundant reference ... it didn't lose a
> single file.
>
> Now ... am I mad, or does this mean I've got corruption somewhere, or how did
> ZFS manage to recover from cksum errors that it detected on a single drive?
>
> I haven't managed to read anything yet which goes to the depth of explaining
> this.
>
> Can someone help me on this please?

Perhaps you have bad RAM.  I'd suggest booting from a CD that contains
memtest86 to see what it says.

-- 
Mike Gerdts
http://mgerdts.blogspot.com/