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Bug 1626923

Summary: path can't be restored automatically after link down and link up from switch port
Product: Red Hat Enterprise Linux 7 Reporter: Lin Li <lilin>
Component: device-mapper-multipathAssignee: Ben Marzinski <bmarzins>
Status: CLOSED INSUFFICIENT_DATA QA Contact: Lin Li <lilin>
Severity: urgent Docs Contact:
Priority: medium    
Version: 7.6CC: agk, bmarzins, guazhang, heinzm, jbrassow, msnitzer, prajnoha
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-11-04 23:04:24 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
test case which can reproduce the issue
none
test log of running the test case none

Description Lin Li 2018-09-10 06:34:41 UTC 
Description of problem:
path can't be restored automatically after link down and link up from switch port

Version-Release number of selected component (if applicable):
DISTRO=RHEL-7.6-20180830.1

How reproducible:
always

Steps to Reproduce:
1.install and config multipath on lpfc_fc driver
2.Running [multipath -ll 360a98000324669436c2b45666c567869 ]...
360a98000324669436c2b45666c567869 dm-2 NETAPP  ,LUN
size=2.0G features='4 queue_if_no_path pg_init_retries 50 retain_attached_hw_handle' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| |- 1:0:0:2 sdd  8:48   failed faulty running
| `- 4:0:0:2 sdn  8:208  active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  |- 1:0:1:2 sdi  8:128  active ready running
  `- 4:0:1:2 sds  65:32  active ready running
Return:0

3.login switch to bring link down
4.loging switch to bring link up

5.multipath -ll
Running [multipath -ll 360a98000324669436c2b45666c567869 ]...
360a98000324669436c2b45666c567869 dm-2 NETAPP  ,LUN
size=2.0G features='4 queue_if_no_path pg_init_retries 50 retain_attached_hw_handle' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 4:0:0:2 sdn  8:208  active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  |- 1:0:1:2 sdi  8:128  active ready running
  `- 4:0:1:2 sds  65:32  active ready running
Return:0

6.multipath -ll -v3
Sep 07 04:59:37 | sdd: not found in pathvec
Sep 07 04:59:37 | sdd: mask = 0x35
Sep 07 04:59:37 | sdd: dev_t = 8:48
Sep 07 04:59:37 | sdd: size = 4194304
Sep 07 04:59:37 | sdd: vendor = NETAPP
Sep 07 04:59:37 | sdd: product = LUN
Sep 07 04:59:37 | sdd: rev = 820a
Sep 07 04:59:37 | sdd: h:b:t:l = 1:0:0:2
Sep 07 04:59:37 | SCSI target 1:0:0 -> FC rport 1:0-2
Sep 07 04:59:37 | sdd: tgt_node_name = 0x500a0980891b8dc5
Sep 07 04:59:37 | (null): (NETAPP  :LUN             ) vendor/product whitelisted
Sep 07 04:59:37 | sdd: path state = transport-offline



Actual results:
path state is transport-offline, but path can't be restored automatically.

Expected results:
path can be restored automatically after link down and link up

Additional info:
server name is storageqe-05.rhts.eng.bos.redhat.com
Comment 2 Lin Li 2018-09-10 06:37:54 UTC 
Created attachment 1482002 [details]
test case which can reproduce the issue
Comment 3 Lin Li 2018-09-10 06:39:26 UTC 
Created attachment 1482003 [details]
test log of running the test case
Comment 4 Lin Li 2018-09-10 06:45:32 UTC 
The main script is main.pl in comment 2.
Comment 9 Ben Marzinski 2020-11-04 23:04:24 UTC 
Since I was never able to reproduce this, and RHEL7 is pretty much finished, I'm closing this.  If you can reproduce it on RHEL-8, feel free to reopen it a a RHEL-8 bug.