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Permanent iSCSI disk timeouts on DataCore SANsymphony-V 9 using udev rules

This document (7015055) is provided subject to the disclaimer at the end of this document.


SUSE Linux Enterprise Server 11
SUSE Linux Enterprise Server 11 Service Pack 3 (SLES 11 SP3)
SUSE Linux Enterprise Server 11 Service Pack 2 (SLES 11 SP2)
SUSE Linux Enterprise Server 11 Service Pack 1 (SLES 11 SP1)


This article will explain how to configure appropriate udev rules to set a certain iSCSI disk timeout for DataCore SANsymphony-v 9.



To change the timeout use:
echo 80 > /sys/block/[disk_device]/device/timeout 
Keep in mind this setting will be lost upon next reboot.


Example udev rule for IBM 2145:

udev rules file cat /etc/udev/rules.d/99-ibm-2145.rules
# Set SCSI command timeout to 120s (default == 30 or 60) for IBM 2145 devices
SUBSYSTEM=="block", ACTION=="add", ENV{ID_VENDOR}=="IBM", ENV{ID_MODEL}=="2145", RUN+="/bin/sh -c 'echo 120 > /sys/block/%k/device/timeout'" 

To gather information on "ID_VENDOR" and "ID_MODEL" run a :

"udevadm info --query=all --attribute-walk --name=/dev/device" 

where "device" is the iSCSI disk.
Returned values for DataCore are:

ATTRS{model}=="Virtual Disk"

Resulting in the following udev rule:

ACTION=="add", SUBSYSTEM=="block", ATTRS{vendor}=="DataCore", ATTRS{model}=="Virtual Disk ", RUN+="/bin/sh -c 'echo 80 > /sys/block/%k/device/timeout'" 


Additional Information


This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:7015055
  • Creation Date: 14-May-2014
  • Modified Date:03-Mar-2020
    • SUSE Linux Enterprise Server

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