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I observed the following message during Ubuntu installation. What is the meaning of SCSI3 (0,0,0) in Partition disks during Ubuntu installation?

I assume SCSI3 is the Small Computer System Interface 3 based on information from https://www.techopedia.com/definition/17302/scsi-3

Small Computer System Interface 3 (SCSI-3) is an ongoing standardization effort for extending the features of SCSI-2.

What about (0,0,0)? Any idea what are these numbers for?

I've attached the screenshot for your reference.

click here for the screenshot

Sabrina
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  • I am not sure who wrote that Techopedia article, but maybe they should get back and edit it. "Ongoing", really? It was released in 1993, *twenty-five* years ago! – Jörg W Mittag Aug 04 '18 at 17:27

1 Answers1

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It means:

  • Controller 0
  • Disk 0
  • Partition 0

So it is the 1st disk controller, the 1st disk and the 1st partition on that disk.

ls -1d /sys/class/scsi_device/*/device/block/*

will list them all and also show the device name used for it.Example:

$ ls -1d /sys/class/scsi_device/*/device/block/*
/sys/class/scsi_device/2:0:0:0/device/block/sr0
/sys/class/scsi_device/4:0:0:0/device/block/sda
/sys/class/scsi_device/5:0:0:0/device/block/sdb
Rinzwind
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  • Thanks @Rinzwind. I would like to read more about this. Do you have any link for reference? – Sabrina Aug 04 '18 at 14:27
  • Here you go. Most topics on device names will be explaining the /dev/sdNX The 0 0 0 from scsi is one level below that ;) – Rinzwind Aug 04 '18 at 14:34