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Dynamically Rediscover New Devices on Linux

Dynamically rediscover new devices on Linux

You can re-scan (re-probe) the SCSI/FC bus for new devices dynamically in Linux by selecting one of the following options.


Option 1

ls /sys/class/scsi_host

  1. echo 1 > /sys/class/fc_host/host0/issue_lip
  2. echo 1 > /sys/class/fc_host/host1/issue_lip
  3. echo "- - -" > /sys/class/scsi_host/host0/scan
  4. echo "- - -" > /sys/class/scsi_host/host1/scan


Option 2

You can also re-load the driver using modprobe:


# modprobe -r qla2300
# lsmod |grep qla
# modprobe qla2300



Option 3

The following software is not supported or endorsed by Hitachi. See Disclaimer.

Lastly, you can also try the following GNU script from Kurt Garloff which automatically does Option 1, as well as other commands.


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