Bug 1821214

Summary:	multipath reads all files that doesn't end with .conf from config_dir.
Product:	Red Hat Enterprise Linux 8	Reporter:	Ranjith ML <rmadhuso>
Component:	device-mapper-multipath	Assignee:	Ben Marzinski <bmarzins>
Status:	CLOSED ERRATA	QA Contact:	Lin Li <lilin>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	8.2	CC:	agk, bmarzins, heinzm, jbrassow, kanderso, lilin, msnitzer, nkshirsa, prajnoha, toneata, zkabelac
Target Milestone:	rc	Keywords:	ZStream
Target Release:	8.0
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	device-mapper-multipath-0.8.4-1.el8	Doc Type:	Bug Fix
Doc Text:	Cause: multipath was treating files in /etc/multipath/conf.d that didn't end with .conf as config files Consequence: Multipath could try to parse non-config files, or backups of config files. Fix: multipath now only parses files ending in .conf from /etc/multipath/conf.d Result: multipath now only parses config files	Story Points:	---
Clone Of:
Clones:	1857758 1858993 (view as bug list)		Environment:
Last Closed:	2020-11-04 01:59:31 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:	1858993

Comment 1 nikhil kshirsagar 2020-04-17 12:34:32 UTC

made this bz public as per customers request for case 02622834

Comment 4 Ben Marzinski 2020-05-28 18:28:37 UTC

device-mapper-multipath has been rebased to 0.8.4, pulling in the upstream fix for this issue.

Comment 7 Lin Li 2020-06-23 07:54:46 UTC

Reproduced on device-mapper-multipath-0.7.8-7.el8
1, [root@storageqe-05 ~]# rpm -qa | grep multipath
device-mapper-multipath-0.7.8-7.el8.x86_64
device-mapper-multipath-libs-0.7.8-7.el8.x86_64

2,[root@storageqe-05 conf.d]# pwd
/etc/multipath/conf.d
[
3, root@storageqe-05 conf.d]# cat local.conf
multipaths {
        multipath {
                wwid    360a98000324669436c2b45666c567865
                alias   boot_1
        }
}


4,[root@storageqe-05 conf.d]# cat local.conf.200304.conf.backup
multipaths {
        multipath {
                wwid    360a98000324669436c2b45666c567865
                alias   boot_1
        }
} 

5,[root@storageqe-05 conf.d]# multipath -ll
Jun 23 03:38:33 | merge_mptable: duplicate multipath config section for 360a98000324669436c2b45666c567865
360a98000324669436c2b45666c567865 dm-3 NETAPP,LUN
size=2.0G features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 4:0:0:0 sdf 8:80  active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  |- 1:0:0:0 sdb 8:16  active ready running
  `- 4:0:1:0 sdj 8:144 active ready running




Verified on device-mapper-multipath-0.8.4-2.el8
1,[root@storageqe-05 conf.d]# rpm -qa | grep multipath
device-mapper-multipath-0.8.4-2.el8.x86_64
device-mapper-multipath-libs-0.8.4-2.el8.x86_64

2,[root@storageqe-05 conf.d]# pwd
/etc/multipath/conf.d

3,[root@storageqe-05 conf.d]# cat local.conf
multipaths {
        multipath {
                wwid    360a98000324669436c2b45666c567865
                alias   boot_1
        }
}

4,[root@storageqe-05 conf.d]# cat local.conf.200304.conf.backup 
multipaths {
        multipath {
                wwid    360a98000324669436c2b45666c567865
                alias   boot_1
        }
} 

5,[root@storageqe-05 conf.d]# multipath -ll
boot_1 (360a98000324669436c2b45666c567865) dm-3 NETAPP,LUN
size=2.0G features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 4:0:0:0 sdf 8:80  active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  |- 1:0:0:0 sdb 8:16  active ready running
  `- 4:0:1:0 sdj 8:144 active ready running



Test result:multipath now only parses config files.

Comment 13 errata-xmlrpc 2020-11-04 01:59:31 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/RHEA-2020:4540