Bug 1477054

Created attachment 1307392 [details]
serial logs for the OS boot failure

Description of problem:
RHEL 6.8 OS installation is successful in L2 iSCSI boot (non-offload solution) with MPIO configuration. The OS fails to boot and falls to dracut shell at the pre-pivot stage. 

Version-Release number of selected component (if applicable):
RHEL 6.8 GA release

How reproducible:
Always

Steps to Reproduce:
1. Setup details:
HPE Synergy BL480c G10 blades with Bronco (HPE Synergy 3820C 10/20Gb Converged Network Adapter) using offload iSCSI OV profile.
 
2. Perform L2 iSCSI boot OS installation using kernel cmdline params ip=ibft, selinux=0, linux dd.
 
3. Apply netxtreme2-7.14.29-dd-rhel6u8-2.6.32_642.el6-x86_64.iso DUD (attached here).
 
4. When OS is installed, and just before reboot, fall to the shell and check the network scripts under /etc/sysconfig/network-scripts/ifcfg-eth0 and ifcfg-eth1. They are configured like below:
DEVICE=eth0
BOOTPROTO=ibft
HWADDR=B2:99:99:00:00:50
NM_CONTROLLED=no
ONBOOT=yes
 
5. Use the below advisory note,
http://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c05235426&sp4ts.oid=1008615168

6. Then reboot the OS and edit the grub to add ifname=XX ip=YY information for both the ports as mentioned in the advisory note
ifname=eth0:b2:99:99:00:00:50 ip=10.1.0.27:::255.0.0.0::eth0:none
ifname=eth1:b2:99:99:00:00:52 ip=192.1.0.28:::255.0.0.0::eth1:none

7. While booting, the eth0 and eth1 interfaces are seen up and running and acquire information from iBFT table

8. The OS falls to dracut shell without switching the root and also does not kick-off the iscsistart script to login to the iSCSI targets
 
Actual results:
On first boot, the OS falls to dracut shell at the pre-pivot stage

Expected results:
The OS should kick-start the iscsistart script, login to the iSCSI targets and boot successfully.

Additional info:
1. within the dracut shell, login to iSCSI target using "iscsistart -b" is successful and upon exiting the dracut shell, the OS boots successfully. (attached screenshot)
2. It is observed that in the pre-pivot stage of OS boot, the OS fails to kick-off iscsistart and does not login to the iSCSI targets.
3. The OS boots successfully if only single path info is given on kernel cmdline at grub,
ifname=eth0:b2:99:99:00:00:50 ip=10.1.0.27:::255.0.0.0::eth0:none
4. The OS fails to boot if only second path info is given on kernel cmdline,
ifname=eth1:b2:99:99:00:00:52 ip=192.1.0.28:::255.0.0.0::eth1:none 
5. At the dracut shell, "ip addr show" shows that eth0 and eth1 interfaces have acquired correct information from the iBFT table and are UP. (attached screenshot)