SMART diags (was: mismatch_cnt != 0, member content mismatch, but md says the mirror is good)

[Ken D'Ambrosio]

On Tue, February 23, 2010 5:43 pm, Benjamin Scott wrote:

> While I run smartd in monitor mode, I've never had it give me a
> useful pre-failure alert.  Likewise, I've never had the SMART health check
> in PC BIOSes give me a useful pre-failure alert.  More than once I've seen
> SMART report the overall health check as "PASS" when the
> whole damn disk is unreadable.  It make me wonder just what the overall
> SMART health is supposed to indicate -- "Yes, the HDD is
> physically present"?  :)

Huh -- I actually *have* had SMART tell me things were awry, several
times.  Mind you -- not nearly as often as I've had disks die w/o being
proactively informed, but I'd probably put the ratio as high as 25%+.

I guess "YMMV" is more than just a catchphrase, after all...

-Ken


-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.