RHEL 5 - attempt to change replacement timeout parameter for an existing iscsi session fails with Permission denied

Solution Verified - Updated -

Issue

System returns "Permission denied" when changing replacement timeout parameter for an active iSCSI session on RHEL 5.

For example:

# for x in $(ls /sys/class/iscsi_session); do echo 10 > /sys/class/iscsi_session/$x/recovery_tmo; done
-bash: /sys/class/iscsi_session/session1/recovery_tmo: Permission denied
-bash: /sys/class/iscsi_session/session2/recovery_tmo: Permission denied

Environment

  • Red Hat Enterprise Linux 5
  • iSCSI backend

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