On 06/16/2014 05:05 AM, John Doe via openindiana-discuss wrote:
From: Jim Klimov <jimkli...@cos.ru>
If you are uncertain if the HDD device has really failed, you can also
try to take apart the computer and remove-replug the power and signal
cables, perhaps a few times. This may cleanse them of oxydation and
repair the storage - happened to me dozens of times on both home-made
rigs and brand servers (though rarely on the latter).
Also, while you're near the box taken apart, you can listen to the
disk if it "squeaks" and vibrates when powered on, or no longer works
mechanically indeed.
In fact, recently we've had a power outage that rebooted a couple of
old servers who had a dead and unresponsive HDD each (the poor boxes
waited for replacements to be purchased and received), and now the
disks are back online - several scrubs found no problems (that is,
after the initial resilver/scrub which complained a lot due to lots
of stale data). So there was even no mechanical replugging, just a
power cycle.
Hum... the server is a bit less than 2 years old, and all disks are
plugged on the same back-plane, so I would be surprised if it was a
cabling issue. And, since I have spares, I prefer to replace the
suspect disk to be safe and test it later... If it is indeed a
cabling issue, the new disk will also look failed I guess.
If it helps, cfgadm -alv says:
sata0/2 disconnected unconfigured failed
I did not yet go onsite to witness if there is any red led.
After a moving the server to temporary quarters, I had a similar
situation. I was able to bring the disk back up remotely (several hours
drive away) with the following commands:
cfgadm -cunconnect <dev>
cfgadm -cconnect <dev>
cfgadm -cconfigure <dev>
This situation kept happening (failing between a day and a week later),
even when I finally moved it to new quarters. I then re-seated the
controller card and cables. It's been running for several months
without a complaint. I did see that sometimes when the disk failed it
would even show up as not connected.
I tried rebooting for awhile which sometimes worked, but I was much more
successful with the above commands and it didn't require bringing the
machine offline.
Even without the move, there is enough vibration to cause problems with
marginal connections so I concur with Jim that it could occur.
Gary
_______________________________________________
openindiana-discuss mailing list
openindiana-discuss@openindiana.org
http://openindiana.org/mailman/listinfo/openindiana-discuss
