Bug 1194604

Summary: Can't initiate two iSCSI connections via bridges on boot.
Product: Red Hat Enterprise Linux 7 Reporter: riddimshocker
Component: dracutAssignee: Lukáš Nykrýn <lnykryn>
Status: CLOSED ERRATA QA Contact: Release Test Team <release-test-team-automation>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.1CC: dracut-maint-list, ggagne, harald, jikortus, jstodola, msvistun, nanda_kishore_chinna, pchavan, riddimshocker
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-11-04 07:57:20 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1203710, 1205796, 1289485, 1304407, 1313485    
Attachments:
Description Flags
Log generated after using rd.debug none

Description riddimshocker 2015-02-20 10:52:21 UTC 
Description of problem:
Can't initiate two bridge adapters on boot.


How reproducible:
100%


Steps to Reproduce:

I use diskless boot via iSCSI and multipath. Dracut takes params from grub2: 

iscsi_initiator=iqn.2001-01.local.domain:node1 netroot=iscsi:@10.0.0.2::3260::iqn.2001-01.local.domain:iscsitest.lv_node1 netroot=iscsi:@192.92.92.108::3260::iqn.2001-01.local.domain:iscsitest.lv_node1 ifname=enp2s0:10:fe:ed:03:aa:51 ifname=enp4s0:f4:6d:04:e6:78:80 ip=enp2s0:dhcp ip=enp4s0:dhcp

Both adapters acquire their addresses, then make connection to iSCSI target by two distinct IP, mutlipath makes a dev.

Now I'm trying to make bridges on this adapters, for VMs. Used dracut params:

iscsi_initiator=iqn.2001-01.local.domain:node1 netroot=iscsi:@10.0.0.2::3260::iqn.2001-01.local.domain:iscsitest.lv_node1 netroot=iscsi:@192.92.92.108::3260::iqn.2001-01.local.domain:iscsitest.lv_node1 ifname=enp2s0:10:fe:ed:03:aa:51 ifname=enp4s0:f4:6d:04:e6:78:80 bridge=br0:enp2s0 bridge=br1:enp4s0 ip=br0:dhcp ip=br1:dhcp

But only one bridge activates (enp2s0 at my case, first one in alphabetical order), then iSCSI connection crashes, because second adapter is inactive and cannot reach required network.

Why can't I have two bridges on boot?
Comment 1 Harald Hoyer 2015-02-20 12:40:20 UTC 
Can you boot with "rd.debug" on the kernel command line and attach /run/initramfs/rdsosreport.txt ??

Also why "Version: 7.3" ?

Which version of dracut? Which version of RHEL?
Comment 3 riddimshocker 2015-02-24 13:26:40 UTC 
Message about alphabetical order was incorrect, the only starting bridge is the last one in kernel params, in case of this:

bridge=br1:enp2s0 ip=br1:dhcp bridge=br0:enp4s0 ip=br0:dhcp

only br0 starts succesfully. Adding "bootdev=br1" doesn't fix it.

There's no rdsosreport.txt after adding "rd.debug", but "messages" got additional info.

According to logs, br1 (first one in kernel commandline) doesn't initiate at all.

dracut Version: 033-161.el7_0.173

/etc/redhat-release
CentOS Linux release 7.0.1406 (Core)
Comment 4 riddimshocker 2015-02-24 13:41:42 UTC 
Created attachment 994707 [details]
Log generated after using rd.debug

Log generated after using rd.debug
Comment 5 Harald Hoyer 2015-03-03 15:06:04 UTC 
yes, sorry, dracut currently only supports one bridge and one bond interface.
Comment 6 Pushpendra Chavan 2015-03-13 03:48:56 UTC 
I think I am facing the same problem as well. Re-adjusting the bugzilla parameters wherever required.

- Pushpendra
Comment 14 Karl Hastings 2016-10-28 13:13:08 UTC 
*** Bug 1380357 has been marked as a duplicate of this bug. ***
Comment 16 errata-xmlrpc 2016-11-04 07:57:20 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2530.html