Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 1984723

Summary: Mpathpersist returns 0 eventhough command doesn't run successfully.
Product: Red Hat Enterprise Linux 8 Reporter: Lin Li <lilin>
Component: device-mapper-multipathAssignee: Ben Marzinski <bmarzins>
Status: CLOSED ERRATA QA Contact: Lin Li <lilin>
Severity: high Docs Contact:
Priority: medium    
Version: 8.5CC: agk, bmarzins, heinzm, msnitzer, prajnoha, zkabelac
Target Milestone: betaKeywords: Triaged
Target Release: ---Flags: pm-rhel: mirror+
Hardware: ppc64le   
OS: Linux   
Whiteboard:
Fixed In Version: device-mapper-multipath-0.8.4-17.el8 Doc Type: Bug Fix
Doc Text:
Cause: some mpathpersist commands were returning success if they did not work, since there were no good paths to use. Consequence: mpathpersist could return success, even though the command faled Fix: mpathpersist now returns failure if there were no usable paths. Result: mpathpersist will now correctly return failure in cases where a command failed because there were no usable paths.
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-11-09 19:32:00 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:

Description Lin Li 2021-07-22 02:25:45 UTC
Description of problem:
Mpathpersist returns 0 eventhough command doesn't run successfully.

Version-Release number of selected component (if applicable):
device-mapper-multipath-0.8.4-14.el8.ppc64le

How reproducible:
always

Steps to Reproduce:
1.[root@ibm-p9z-20-lp15 ~]# rpm -qa | grep multipath
device-mapper-multipath-libs-0.8.4-14.el8.ppc64le
device-mapper-multipath-0.8.4-14.el8.ppc64le

2.[root@ibm-p9z-20-lp15 ~]# multipath -ll
mpatha (3600601605e203f008e22d0221f07eb11) dm-0 DGC,VRAID
size=8.0G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=10 status=enabled
| |- 1:0:0:0 sda 8:0  active ready running
| `- 2:0:0:0 sdc 8:32 active ready running
`-+- policy='service-time 0' prio=50 status=enabled
  |- 1:0:1:0 sdb 8:16 active ready running
  `- 2:0:1:0 sdd 8:48 active ready running

3.[root@ibm-p9z-20-lp15 ~]# mpathpersist -i -k /dev/mapper/mpatha
  PR generation=0x0, 	0 registered reservation key.

4.[root@ibm-p9z-20-lp15 ~]# mv /etc/multipath.conf /

5.[root@ibm-p9z-20-lp15 ~]# mpathpersist --out -C --param-rk=0 /dev/mapper/mpatha
Jul 21 22:18:12 | /etc/multipath.conf does not exist, blacklisting all devices.
Jul 21 22:18:12 | You can run "/sbin/mpathconf --enable" to create
Jul 21 22:18:12 | /etc/multipath.conf. See man mpathconf(8) for more details

6.[root@ibm-p9z-20-lp15 ~]# echo $?
0  <-----------------------


Actual results:
Mpathpersist returns 0 when command doesn't run successfully

Expected results:
Mpathpersist returns a failure when command doesn't run successfully

Additional info:

Comment 4 Lin Li 2021-07-29 01:53:08 UTC
Verified on device-mapper-multipath-0.8.4-17.el8
1,[root@ibm-p9z-20-lp13 ~]# rpm -qa | grep multipath
device-mapper-multipath-libs-0.8.4-17.el8.ppc64le
device-mapper-multipath-0.8.4-17.el8.ppc64le

2,[root@ibm-p9z-20-lp13 ~]# multipath -ll
mpatha (3600601605e203f00d6ed8ff61e07eb11) dm-0 DGC,VRAID
size=8.0G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=10 status=enabled
| |- 1:0:0:0 sda 8:0  active ready running
| `- 2:0:0:0 sdc 8:32 active ready running
`-+- policy='service-time 0' prio=50 status=enabled
  |- 1:0:1:0 sdb 8:16 active ready running
  `- 2:0:1:0 sdd 8:48 active ready running
 
3,[root@ibm-p9z-20-lp13 ~]# mpathpersist -i -k /dev/mapper/mpatha
  PR generation=0x0, 	0 registered reservation key.

4,[root@ibm-p9z-20-lp13 ~]# mv /etc/multipath.conf /
[root@ibm-p9z-20-lp13 ~]# mpathpersist --out -C --param-rk=0 /dev/mapper/mpatha
Jul 28 21:51:11 | /etc/multipath.conf does not exist, blacklisting all devices.
Jul 28 21:51:11 | You can run "/sbin/mpathconf --enable" to create
Jul 28 21:51:11 | /etc/multipath.conf. See man mpathconf(8) for more details
Jul 28 21:51:11 | 3600601605e203f00d6ed8ff61e07eb11: no path available
PR out: command failed

5,[root@ibm-p9z-20-lp13 ~]# echo $?
13

Comment 7 errata-xmlrpc 2021-11-09 19:32:00 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 (device-mapper-multipath bug fix and enhancement update), 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://access.redhat.com/errata/RHBA-2021:4367