Date: Fri, 6 Feb 2004 19:30:29 +0100 From: Gabriel Ambuehl <gaml@buz.ch> To: freebsd-questions@freebsd.org, freebsd-hardware@freebsd.org Subject: atacontrol weirdness: RAID 1 array is shown to be degraded but both disks are up Message-ID: <1203558116.20040206193029@buz.ch>
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The 4.9 box has got onboard Promise RAID which so far has worked just
fine.
However, today I got a report about a degraded disk array so I went to
check and found something rather odd:
$ atacontrol list
ATA channel 0:
Master: no device present
Slave: no device present
ATA channel 1:
Master: no device present
Slave: no device present
ATA channel 2:
Master: no device present
Slave: no device present
ATA channel 3:
Master: ad6 <WDC WD800BB-00CAA1/17.07W17> ATA/ATAPI rev 5
Slave: ad7 <WDC WD800BB-00CAA1/17.07W17> ATA/ATAPI rev 5
$ atacontrol status 0
ar0: ATA RAID1 subdisks: ad6 ad7 status: DEGRADED
How can a RAID array be degraded when both disks are still there? How
do I figure out what disk holds the current set of data? And
what do I need to do, anyway?
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