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-multipathAssignee: Ben Marzinski <bmarzins>
Status: CLOSED ERRATA QA Contact: Lin Li <lilin>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 8.2CC: agk, bmarzins, heinzm, jbrassow, kanderso, lilin, msnitzer, nkshirsa, prajnoha, toneata, zkabelac
Target Milestone: rcKeywords: ZStream
Target Release: 8.0Flags: pm-rhel: mirror+
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:
: 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