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This section describes how to find proper "/dev/sg" device for CHARON mapping
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Procedures of finding the target "/dev/sg" device
First method
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Method 1
Open a terminal console and issue:
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If the "lsscsi" command is not installed on your system, use "yum install lsscsi" to make it available. If you cannot install "lsscsi", use method 2 or method 3 described below.
Output example1:
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Output example2:
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Method 2
Open a terminal console and issue:
# cat /proc/scsi/sg/device_hdr; cat /proc/scsi/sg/devices |
The output will look something likeOutput example:
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The fifth field column ("type") is the device type.value has the following correspondence:
| Value | Device |
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| 0 | Disk |
| 1 | Tape |
| 5 | CD-ROM |
| 8 | Tape changer |
The "N" in the "/dev/sgN" device is the line number in this table (starting from 0) corresponded to the devices CHARON-AXP will use.Thus corresponding to the output provided by the commands above without taking the header into account so here "/dev/sg0" will be corresponds to the the CD-ROM mapping in this example.
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Method 3
On a freshly booted system please , issue the following command:
# dmesg | grep sg |
The output will look like that:
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This table lists all the devices, not only the real SCSI ones (SATA/IDE for example). CHARON supports only real SCSI devices.
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