Bug 1249107

Summary: [targetcli] cannot discover iSCSI target with IPv6
Product: Red Hat Enterprise Linux 7 Reporter: Martin Hoyer <mhoyer>
Component: kernelAssignee: Andy Grover <agrover>
kernel sub component: Kernel Target (LIO) QA Contact: Bruno Goncalves <bgoncalv>
Status: CLOSED ERRATA Docs Contact:
Severity: unspecified    
Priority: unspecified CC: agrover, bgoncalv, cleech, mhoyer
Version: 7.2Keywords: Regression
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: kernel-3.10.0-312.el7 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-11-19 23:02:25 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:
Attachments:
Description Flags
Target config
none
netstat output
none
proposed patch none

Description Martin Hoyer 2015-07-31 13:48:14 UTC 
Description of problem:
Cannot discover iSCSI target (LIO) on aarch64 with IPv6 

Version-Release number of selected component (if applicable):
targetcli-2.1.fb41-2.el7.noarch
iscsi-initiator-utils-6.2.0.873-30.el7.aarch64

How reproducible:
100%

Steps to Reproduce:
1.Create iSCSI target using targetcli
2.Try to discover the target
# iscsiadm -m discovery -t st -p ::1

Actual results:
iscsiadm: Cannot resolve host [::1]. getaddrinfo error: [Name or service not known]
iscsiadm: cannot resolve [::1]
iscsiadm: failed to add default portal
iscsiadm: failed to add target record
iscsiadm: No portals found

Expected results:
target discovered successfully
Comment 1 Martin Hoyer 2015-07-31 13:50:37 UTC 
kernel-4.1.0-0.12.el7.aarch64
Comment 3 Bruno Goncalves 2015-08-12 13:28:35 UTC 
It is not only on aarch64, I've also reproduced it on 7.2 Alpha on x86_64

# iscsiadm -m discovery -I default -p ::1 -t st
iscsiadm: Cannot resolve host [::1]. getaddrinfo error: [Name or service not known]

iscsiadm: cannot resolve [::1]
iscsiadm: failed to add default portal, ignoring target iqn.2009-10.com.redhat:storage-1
iscsiadm: failed to add target record
iscsiadm: No portals found

# uname -r
3.10.0-302.el7.x86_64

# targetcli-2.1.fb41-2.el7.noarch
Comment 4 Bruno Goncalves 2015-08-12 13:52:14 UTC 
Setting it as Regression as it works well on kernel -300 and fails on -301, probably due BZ#1136558
Comment 7 Andy Grover 2015-08-18 16:01:08 UTC 
Bruno or Martin, can you please attach your target config, '/etc/target/saveconfig.json'? Thanks.
Comment 8 Andy Grover 2015-08-18 16:05:01 UTC 
netstat -an output would also be great.
Comment 9 Martin Hoyer 2015-08-19 09:01:50 UTC 
Created attachment 1064684 [details]
Target config
Comment 10 Martin Hoyer 2015-08-19 09:02:30 UTC 
Created attachment 1064685 [details]
netstat output
Comment 11 Andy Grover 2015-08-19 23:46:38 UTC 
Reproduced and diagnosed. Thanks cleech! Working on a fix.
Comment 13 Andy Grover 2015-08-20 01:13:38 UTC 
Created attachment 1065059 [details]
proposed patch

works for me for :: and ::1 cases.
Comment 14 Andy Grover 2015-08-20 01:24:46 UTC 
posted to target-devel.
Comment 15 Rafael Aquini 2015-08-31 13:59:56 UTC 
Patch(es) available on kernel-3.10.0-312.el7
Comment 18 Martin Hoyer 2015-09-02 11:16:36 UTC 
Verified by running tests with kernel-3.10.0-312.el7
Comment 19 errata-xmlrpc 2015-11-19 23:02:25 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/RHSA-2015-2152.html