We have a number of FreeBSD boxes with 7506 series 3ware controllers
(about 10 and about to buy 10 more). We are generally happy with the
performance and reliability, but we have a few intermittent, recurring
problems.
With some of our boxes we are using 300GB / 320GB Maxtor Maxline II disks.
Occasionally, a machine with these disks will lock up hard; the 3ware
controller has stopped responding. After taking the machine offline,
and using MAXTOR PowerMax tools to analyse the disks, it becomes clear
that one of the disks has errors.
I have suspicions that the Maxtor disks are raising SMART events that
are not handled by the FreeBSD 3ware twe driver.
Is this a plausible explanation?
Is anyone else aware of this issue, and is there anything we can do to
solve / work around this problem?
(We've tried disabling SMART on the disks - but the 7506 card re-enables
it).
More information:
This is happening on at least 3 machines.
The first time it happened, we upgraded to FreeBSD 4.10-PRERELEASE
(cvsupped May 4th). This uses the 3ware imported drivers. (We also
applied the stability patch posted to the Stable list in a bout of straw
clutching).
We have since seen the same problem on two additional machines (running
4.9-STABLE from Feb 2nd and April 4th). We haven't yet upgraded these
machines - might do soon.
I have sent an email to support@xxxxxxxxx - no response yet - but I only
sent it last Friday.
Thanks in advance,
Jason.
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