I found this in /var/log/messages:

Jul 27 03:59:46 localhost kernel: sd 3:0:1:0: [sdd] SCSI device reset on scsi3:1

I don't see any other error logs to indicate why the reset occurred.

How do I determine the cause of this SCSI device reset?

Note: I'm running Linux CentOS 7 as a virtual machine on top of VMware's ESX hypervisor.

  • Is this a singlel, directly attached disk, or is it a RAID unit, or on a SAN, or is it a virtual disk implemented by VMware? Jul 28, 2017 at 1:15
  • Is it a physical HDD disk connected by an HBA (non RAID controller). Jul 28, 2017 at 3:48


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