On 02 October, 2009 - Ray Clark sent me these 4,4K bytes:

> Data security.  I migrated my organization from Linux to Solaris
> driven away from Linux by the the shortfalls of fsck on TB size file
> systems, and towards Solaris by the features of ZFS.
[...]
> Before taking rather disruptive actions to correct this, I decided to
> question my original decision and found schlie's post stating that a
> bug in fletcher2 makes it essentially a one bit parity on the entire
> block:
> http://opensolaris.org/jive/thread.jspa?threadID=69655&tstart=30
> While this is twice as good as any other file system in the world that
> has NO such checksum, this does not provide the security I migrated
> for.  Especially given that I did not know what caused the original
> data loss, it is all I have to lean on.
...

That post refers to bug 6740597
http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6740597
which also refers to
http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=2178540

So it seems like it's fixed in snv114 and s10u8, which won't help your
s10u4 unless you update..

/Tomas
-- 
Tomas Ögren, st...@acc.umu.se, http://www.acc.umu.se/~stric/
|- Student at Computing Science, University of Umeå
`- Sysadmin at {cs,acc}.umu.se
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