-----Original Message-----
From: CentOS [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of Noam
Bernstein
Sent: Sunday, October 22, 2017 8:54 AM
To: CentOS mailing list <centos@xxxxxxxxxx>
Subject: Areca RAID controller on latest CentOS 7 (1708 i.e. RHEL
7.4) kernel 3.10.0-693.2.2.el7.x86_64
> Is anyone running any Areca RAID controllers with the latest CentOS 7 kernel,
> 3.10.0-693.2.2.el7.x86_64? We recently updated (from 3.10.0-
> 514.26.2.el7.x86_64), and we’ve started having lots of problems. To add to
> the confusion, there’s also a hardware problem (either with the controller or
> the backplane most likely) that we’re in the process of analyzing. Regardless,
> we have an ARC1883i, and with the older kernel the system is stable, but
> with the new kernel it locks up within 1-12 hours of boot, with errors in
> /var/log/messages that start with things like
> kernel: arcmsr0: abort device command of scsi id = 0 lun = 0
> (that is indeed the RAID scsi device) and within a few minutes of those also
> things like
> Oct 19 23:06:57 radon kernel: INFO: task xfsaild/dm-9:913 blocked for more
> than 120 seconds.
You mention you have hardware problems, what are they? A write is blocked
for longer than they host is willing to wait. There are a few sysctl parameters
that affect this but I'd be more willing to suggest its related to your hardware
problems.
jlc
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