[OpenIndiana-discuss] Broken zpool

[Bob Friesenhahn]

On Sat, 7 Nov 2015, Philip Robar wrote:
> corrupt, with redundancy it can fix the problem. With a single drive ZFS
> pool you give up that integrity and there's a good chance that any data
> corruption will then be passed on to your backup before ZFS flags it
> resulting in the loss of that data.

I expect that zfs will detect checksum error during 'zfs send' similar 
to the way it detects checksum errors while reading data.  Due to 
this, I don't buy it that data corruption might be passed to the 
backup while using zfs mechanims (other than due to zfs implementation 
bug).  It can easily be silently corrupted by user or application 
error at a higher level though.  Higher level corruption is where 
snapshots may save the day.

Otherwise, I agree with the other points you made.

Bob
-- 
Bob Friesenhahn
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/