Dying disk?

[twig les]

Hey *, I can't quite figure out if this is a dire warning.  I
hope not since I can't convince my hard drives to stop failing
... sigh.  The machine still works fine and has no data worth
worrying about, but it'd be nice to know ...  From dmesg:

acd0: FAILURE - READ_BIG status=51<READY,DSC,ERROR>
sensekey=ILLEGAL REQUEST error=0
acd0: FAILURE - READ_BIG status=51<READY,DSC,ERROR>
sensekey=ILLEGAL REQUEST error=0
acd0: FAILURE - READ_BIG status=51<READY,DSC,ERROR>
sensekey=ILLEGAL REQUEST error=0
acd0: FAILURE - READ_BIG status=51<READY,DSC,ERROR>
sensekey=ILLEGAL REQUEST error=0
acd0: FAILURE - READ_BIG status=51<READY,DSC,ERROR>
sensekey=ILLEGAL REQUEST error=0
acd0: FAILURE - READ_BIG status=51<READY,DSC,ERROR>
sensekey=ILLEGAL REQUEST error=0
Mounting root from ufs:/dev/ad0s1a


=====
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With a few exceptions, secrecy is deeply incompatible with
democracy and with science.
     --Carl Sagan  
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