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Bug 970051 - “iscsiadm -R” failed rescan session running through the target
Summary: “iscsiadm -R” failed rescan session running through the target
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: iscsi-initiator-utils
Version: 6.4
Hardware: x86_64
OS: Linux
unspecified
urgent
Target Milestone: rc
: ---
Assignee: Chris Leech
QA Contact: Storage QE
URL:
Whiteboard: storage
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-06-03 11:50 UTC by vvyazmin@redhat.com
Modified: 2017-12-06 11:00 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2017-12-06 11:00:20 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
## Logs rhevm, vdsm (14.38 MB, application/x-gzip)
2013-06-03 12:16 UTC, vvyazmin@redhat.com 		no flags Details
View All

Description vvyazmin@redhat.com 2013-06-03 11:50:13 UTC 
Description of problem: “iscsiadm -R” failed rescan session running through the target


Version-Release number of selected component (if applicable):
OS: Red Hat Enterprise Linux Server release 6.4 (Santiago)
RPM: iscsi-initiator-utils-6.2.0.873-2.el6.x86_64

How reproducible:
Unknown

Steps to Reproduce:
1. on storage server create target (T = target1) and lun (lun = lun1)
2. from client, perform iscsi login command to target1 (provide iscsi login command)
3. on storage server, create additional lun (lun = lun2) under target1
4. from client (i.e, initiator) perform and iscsi login command to the same target (target1)

Investigation: 
During investigation we found following:
“multipath -ll” command nothing show, or show old connections and not relevant information
“vgs” command nothing show, or show old connections and not relevant information
“iscsiadm -m session -R” not reload a new information about  LUN's
“multipath -r” not reload a new connections 

RPM: iscsi-initiator-utils-6.2.0.873-2.el6.x86_64

Workaround:
1. disconnect from all iSCSI session
* iscsiadm -m session -u
* iscsiadm -m node -o delete
2. manually reconnect again
* iscsiadm -m discoverydb --discover -t st -p 10.35.160.107
* iscsiadm -m node -l -T iqn.1992-04.com.emc:cx.ckm00121000438.a6
* iscsiadm -m node -l -T iqn.1992-04.com.emc:cx.ckm00121000438.a7
* iscsiadm -m node -l -T iqn.1992-04.com.emc:cx.ckm00121000438.b6
* iscsiadm -m node -l -T iqn.1992-04.com.emc:cx.ckm00121000438.b7

Actual results:
client doesn't see new lun in multipath

Expected results:


Additional info:
Comment 1 vvyazmin@redhat.com 2013-06-03 12:16:44 UTC 
Created attachment 756280 [details]
## Logs rhevm, vdsm
Comment 2 vvyazmin@redhat.com 2013-06-03 12:34:44 UTC 
Thread-212::DEBUG::2013-05-27 13:46:45,077::misc::83::Storage.Misc.excCmd::(<lambda>) '/usr/bin/sudo -n /sbin/iscsiadm -m session -R' (cwd None)
Comment 3 RHEL Program Management 2013-10-14 03:26:24 UTC 
This request was not resolved in time for the current release.
Red Hat invites you to ask your support representative to
propose this request, if still desired, for consideration in
the next release of Red Hat Enterprise Linux.
Comment 6 Martin Hoyer 2015-10-12 09:25:22 UTC 
Is this issue still reproducible?
Comment 7 Aharon Canan 2015-10-12 10:34:58 UTC 
Kevin, Please try to reproduce and update.
Comment 8 Kevin Alon Goldblatt 2015-11-10 16:32:12 UTC 
(In reply to Aharon Canan from comment #7)
> Kevin, Please try to reproduce and update.

I checked with the following code:
-------------------------------------------
vdsm-4.17.10.1-0.el7ev.noarch
rhevm-3.6.0.3-0.1.el6.noarch

I ran the following scenario:
-------------------------------------------
1. Created a new lun on target
2. From the host ran "multipath -ll" - The newly created LUN is not displayed
3. from the host ran "iscsiadm -m session -R" - Now the newly added LUN is displayed
Comment 9 Martin Hoyer 2015-11-12 15:51:53 UTC 
Hi Kevin,
can You try to reproduce it on RHEL? I was unable to do so with RHEL-6.7. Multipath and iscsiadm are displaying the second LUN correctly.
device-mapper-multipath-0.4.9-87.el6
iscsi-initiator-utils-6.2.0.873-14.el6
kernel-2.6.32-573.el6
Comment 10 Aharon Canan 2015-11-12 16:18:59 UTC 
(In reply to Martin Hoyer from comment #9)
> Hi Kevin,
> can You try to reproduce it on RHEL? I was unable to do so with RHEL-6.7.
> Multipath and iscsiadm are displaying the second LUN correctly.
> device-mapper-multipath-0.4.9-87.el6
> iscsi-initiator-utils-6.2.0.873-14.el6
> kernel-2.6.32-573.el6

Although we are testing RHEVM, the hypervisor is running on top of RHEL 7.2

In that case we used RHEL only to reproduce (as stated in the reproduction steps).
Comment 11 Martin Hoyer 2015-11-12 16:48:23 UTC 
Yes but reproduction steps were made in RHEL-6.4.
According to comment 8 the iscsiadm refresh is working well - bug is open against the iscsi-initiator-utils.
Are you sure that multipath is not displaying the second LUN even after multipath -r ?
Comment 12 Jan Kurik 2017-12-06 11:00:20 UTC 
Red Hat Enterprise Linux 6 is in the Production 3 Phase. During the Production 3 Phase, Critical impact Security Advisories (RHSAs) and selected Urgent Priority Bug Fix Advisories (RHBAs) may be released as they become available.

The official life cycle policy can be reviewed here:

http://redhat.com/rhel/lifecycle

This issue does not meet the inclusion criteria for the Production 3 Phase and will be marked as CLOSED/WONTFIX. If this remains a critical requirement, please contact Red Hat Customer Support to request a re-evaluation of the issue, citing a clear business justification. Note that a strong business justification will be required for re-evaluation. Red Hat Customer Support can be contacted via the Red Hat Customer Portal at the following URL:

https://access.redhat.com/
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