I had an issue similar to this years ago where I helped out a former
employer on a Dell Poweredge System with a RAID 5 array (Windows). The
system Refused to Boot, but there were lights on the front of the
backplane were the drives slid in, indicating drive fault (amber) or
drive ok (green). One of the tests I did was I re-arranged the drives
where they were inserted into the backplane. When I did that the same
lights (slots) went amber after re-arranging the drives.
The problem wasn't the drives at all, the problem was the controller
card going bad. The IT guy that was there full time ended up shipping
the drives off to a recovery service depo, and they recovered the data
there, no problem.
When I worked for Sage we had SCSI RAID Controller cards that had
similar functions, where the RAID card config was backed up in the
drives, and the Drive configuration was stored in the RAID controller,
so they backed up the config of each other.
In the event of a failure of the controller card, the same model card
could be put back into the system, and the config data pulled off the
recovery location in the drives, then the system was back up and going
again.
Perhaps that is what's happening to your system.
I would take several full bare metal backups right now (and test restore
the data onto a new system) there may be looming hardware failure around
the corner.
Chris
On 12/16/2020 3:10 PM, Frank Cox wrote:
On Wed, 16 Dec 2020 13:57:13 -0700
Paul R. Ganci via CentOS wrote:
My gut suggests that the raid array was never degraded and that my
system (i.e. cat /proc/mdstat) was lying to me. Any Opinions?
I wonder if it's a ram failure in either the main computer or the drive controller. An intermittent ram failure (or cold solder joint or something equally hard to track down) could cause all manner of un-repeatable weirdness.
--
Christopher Wensink
IS Administrator
Five Star Plastics, Inc
1339 Continental Drive
Eau Claire, WI 54701
Office: 715-831-1682
Mobile: 715-563-3112
Fax: 715-831-6075
cwensink@xxxxxxxxxxxxxxxxxxxxxx
www.five-star-plastics.com
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