Bug 729561

Summary: Cannot discover iSCSI device by using emulex iSCSI HBA
Product: Red Hat Enterprise Linux 6 Reporter: Guohua Ouyang <gouyang>
Component: ovirt-nodeAssignee: Mike Burns <mburns>
Status: CLOSED DUPLICATE QA Contact: Virtualization Bugs <virt-bugs>
Severity: medium Docs Contact:
Priority: medium    
Version: 6.2CC: apevec, cshao, kli, leiwang, moli, ovirt-maint, ycui
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2011-08-10 08:41:15 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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dmesg + messages none

Description Guohua Ouyang 2011-08-10 07:38:12 UTC 
Description of problem:
iSCSI devic is connected by emulex iSCSI HBA, boot with rhevh media cannot find iSCSI lun.
Tested with RHEL6 media, it can find iSCSI lun and installed rhel to it.

# lspci | grep Emulex
03:00.0 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (rev 02)
03:00.1 Ethernet controller: Emulex Corporation OneConnect 10Gb NIC (rev 02)
03:00.2 Mass storage controller: Emulex Corporation OneConnect 10Gb iSCSI Initiator (rev 02)
03:00.3 Mass storage controller: Emulex Corporation OneConnect 10Gb iSCSI Initiator (rev 02)


Version-Release number of selected component (if applicable):
rhev-hypervisor-6.2-0.11.el6

How reproducible:
Always.

Steps to reproduce:
1. Configure emulex iSCSI HBA correctly. .
2. boot with rhevh media.
3. Try to find iSCSI lun.

Actual results:
Cannot find iSCSI device during rhevh installation.

Expected results:
Can find iSCSI device during rhevh installation. .
Comment 1 Guohua Ouyang 2011-08-10 07:39:15 UTC 
Created attachment 517533 [details]
dmesg + messages
Comment 3 Alan Pevec 2011-08-10 08:41:15 UTC 
19a2:0702 (kmod is be2iscsi) Mass storage controller: Emulex Corporation OneConnect 10Gb iSCSI Initiator is not a full HW HBA, it's iscsi off-load card and still requires iscsid on the Linux side.
Currently, rhevh doesn't support such disk for installation (it should still work for RHEV storage domain).

*** This bug has been marked as a duplicate of bug 520111 ***
Comment 4 Alan Pevec 2011-08-10 08:50:21 UTC 
FYI after iscsid is started and iscsiadm -m fw -l iscsi disks showed up on rhevh
Comment 5 Alan Pevec 2011-08-10 09:03:33 UTC 
FYI RHEL 6.1 setup on such iscsi disk has this in boot parameters:
ro root=/dev/mapper/vg_XXX-lv_root iscsi_firmware ip=eth2:dhcp ifname=eth2:XX:XX:XX:XX:XX:XX rd_LVM_LV=vg_XXX/lv_root rd_LVM_LV=vg_XXX/lv_swap
Comment 6 Alan Pevec 2011-08-10 09:12:02 UTC 
And last FYI, RHEL /boot is also on iscsi, so boot access is provided via BIOS interface on the card:
#cat /boot/grub/device.map 
# this device map was generated by anaconda
(hd0)     /dev/mapper/mpathb

# multipath -ll
mpathb (1IET     00010001) dm-0 IET,VIRTUAL-DISK