Jan 232013

After updating a Solaris 11.0 installation to Solaris 11.1 with pkg update – none of servers iSCSI -targets were accessible. Under Windows disk management partition would show up as RAW -partition, data could still be rescued with recovery -software.

After troubleshooting it came clear that i’m not the only one.

Problem is in ImmediateData, and it seems to be resolved in the latest Solaris 11.1 -update ( – which requires a support contract with Oracle to be downloaded….


If you don’t have access to Oracle Solaris Support -repository – stay in 11.0 until next major update is released, or use a workaround which disables ImmediateData:

Windows (tested):
1. Set the following registry value to 0:
HKLM\SYSTEM\CurrentControlSet\Control\Class{4D36E97B-E325-11CE-BFC1-08002BE10318}\<Instance Number>\Parameters\ImmediateData
2. Reboot

Linux (tested):
1. Disable ImmediateData in iscsid.conf (location depends on distro) or use the same iscsiadm -command as in Solaris
2. Restart the iSCSI service

Solaris (untested):
1. Disable ImmediateData:
# iscsiadm -m node -T ${IQN} -p ${IP}:${PORT},${TPGT} -o update -n node.session.iscsi.ImmediateData -v No
2. Restart the iSCSI service:
# svcadm restart svc:/network/iscsi/initiator:default

ESXi (untested):
1. Backup vmkiscsid.db
2. Edit vmkiscsid.db with sqlite3:
select * from nodes; update nodes set ‘<immediatedatakey>’ = ‘No’
3. Replace vmkiscsid.db with modified version (if you didn’t edit it in place) and reboot server

  2 Responses to “iSCSI broken on Solaris 11.1”

  1. You would not need to disable Immediate Data for Solaris iSCSI initiators – connecting Solaris clients are not affected by this bug and will work without any additional workarounds.

    • Nice to know, thanks for the information.
      (Note-to-self: currently installed version of Solaris 11 can be checked with “pkg list -af entire”)