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Bug 2107162

Summary: lvm ignores multipath blacklist configuration
Product: Red Hat Enterprise Linux 9 Reporter: Marian Csontos <mcsontos>
Component: lvm2Assignee: LVM and device-mapper development team <lvm-team>
lvm2 sub component: Devices, Filtering and Stacking QA Contact: cluster-qe <cluster-qe>
Status: CLOSED ERRATA Docs Contact:
Severity: high    
Priority: high CC: agk, arachman, bmarzins, cluster-qe, cmarthal, cshao, godas, heinzm, jbrassow, jhouston, lsvaty, lveyde, lvm-team, mavital, mcsontos, michal.skrivanek, msnitzer, nsoffer, peyu, prajnoha, rmadhuso, sanja, sbonazzo, teigland, vdas, weiwang, yaniwang, zkabelac
Version: 9.1Keywords: Regression, Triaged, ZStream
Target Milestone: rcFlags: pm-rhel: mirror+
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: lvm2-2.03.16-2.el9 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: 2076262 Environment:
Last Closed: 2022-11-15 11:20:43 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: 2076262    
Bug Blocks: 2074765, 2100133    

Comment 6 Corey Marthaler 2022-07-20 21:25:27 UTC 
This behavior is different than what the 8.7 fix showed ( https://bugzilla.redhat.com/show_bug.cgi?id=2076262#c27 ), but it's still not what was listed as expected in https://bugzilla.redhat.com/show_bug.cgi?id=2076262#c18.


[root@hayes-03 tmp]#  pvcreate /dev/sdf
  Physical volume "/dev/sdf" successfully created.
[root@hayes-03 tmp]# pvs
  PV         VG Fmt  Attr PSize  PFree 
  /dev/sdf      lvm2 ---  <1.82t <1.82t

[root@hayes-03 tmp]# multipath /dev/sdf
93451.207798 | mpatha: addmap [0 3905945600 multipath 0 0 1 1 service-time 0 1 1 8:80 1]
create: mpatha (36d09466083d8e100233c180321c0e570) undef DELL,PERC H330 Adp
size=1.8T features='0' hwhandler='0' wp=undef
`-+- policy='service-time 0' prio=1 status=undef
  `- 0:2:5:0  sdf 8:80  undef ready running

# Unlike in 8.7, pvs here does seem to realize there's a pv on /dev/mapper/mpatha, are we actually supposed to do the 'lvmdevices --update'?
[root@hayes-03 tmp]# pvs
  WARNING: devices file is missing /dev/mapper/mpatha (253:0) using multipath component /dev/sdf.
  See lvmdevices --update for devices file update.

[root@hayes-03 tmp]# grep sdf /etc/lvm/devices/system.devices 
IDTYPE=sys_wwid IDNAME=naa.6d09466083d8e100233c180321c0e570 DEVNAME=/dev/sdf PVID=UTQiPfsSGvGMtz025sQtdo6FcwPTqBxW

[root@hayes-03 tmp]# cat /etc/multipath/wwids
# Multipath wwids, Version : 1.0
# NOTE: This file is automatically maintained by multipath and multipathd.
# You should not need to edit this file in normal circumstances.
#
# Valid WWIDs:
/36d09466083d8e100233c180321c0e570/

# add to /etc/multipath.conf
blacklist {
        wwid "36d09466083d8e100233c180321c0e570"
}

[root@hayes-03 tmp]# systemctl restart multipathd.service
[root@hayes-03 tmp]# multipath -F
[root@hayes-03 tmp]# multipath -v2
[root@hayes-03 tmp]# multipath -l

# pvs is back to see the device on /dev/sdf, not /dev/mapper/mpatha
[root@hayes-03 tmp]# pvs
  PV         VG Fmt  Attr PSize  PFree 
  /dev/sdf      lvm2 ---  <1.82t <1.82t
Comment 7 Corey Marthaler 2022-07-26 14:30:54 UTC 
Marking Verified:Tested in the latest rpms.

kernel-5.14.0-130.el9    BUILT: Fri Jul 15 07:31:56 AM CDT 2022
lvm2-2.03.16-2.el9    BUILT: Thu Jul 14 11:45:18 AM CDT 2022
lvm2-libs-2.03.16-2.el9    BUILT: Thu Jul 14 11:45:18 AM CDT 2022



[root@hayes-03 ~]# grep use_devicesfile /etc/lvm/lvm.conf 
        # Configuration option devices/use_devicesfile.
        # use_devicesfile = 0
        use_devicesfile = 0     # edited by QA Thu Jul 21 13:40:20 2022
[root@hayes-03 ~]# pvscan
  No matching physical volumes found
[root@hayes-03 ~]# pvcreate /dev/sdn
  Physical volume "/dev/sdn" successfully created.
[root@hayes-03 ~]# pvs
  PV         VG Fmt  Attr PSize  PFree 
  /dev/sdn      lvm2 ---  <1.82t <1.82t
[root@hayes-03 ~]# multipath /dev/sdn
487683.290851 | mpathc: addmap [0 3905945600 multipath 0 0 1 1 service-time 0 1 1 8:208 1]
create: mpathc (36d09466083d8e100233c183624c8911b) undef DELL,PERC H330 Adp
size=1.8T features='0' hwhandler='0' wp=undef
`-+- policy='service-time 0' prio=1 status=undef
  `- 0:2:13:0 sdn 8:208 undef ready running
[root@hayes-03 ~]# pvs
  PV                 VG Fmt  Attr PSize  PFree 
  /dev/mapper/mpathc    lvm2 ---  <1.82t <1.82t
[root@hayes-03 ~]# cat /etc/multipath/wwids
# Multipath wwids, Version : 1.0
# NOTE: This file is automatically maintained by multipath and multipathd.
# You should not need to edit this file in normal circumstances.
#
# Valid WWIDs:
/36d09466083d8e100233c183624c8911b/

/etc/multipath.conf
blacklist {
        wwid "36d09466083d8e100233c183624c8911b"
}

[root@hayes-03 ~]# multipath -F
[root@hayes-03 ~]# multipath -v2
[root@hayes-03 ~]# multipath -l
[root@hayes-03 ~]# pvs
  PV         VG Fmt  Attr PSize  PFree 
  /dev/sdn      lvm2 ---  <1.82t <1.82t


/etc/multipath.conf
blacklist_exceptions {
        wwid "36d09466083d8e100233c183624c8911b"
}
blacklist {
        wwid "36d09466083d8e100233c183624c8911b"
}

[root@hayes-03 ~]# multipath -F
[root@hayes-03 ~]# multipath -v2
488607.328920 | mpathc: addmap [0 3905945600 multipath 0 0 1 1 service-time 0 1 1 8:208 1]
create: mpathc (36d09466083d8e100233c183624c8911b) undef DELL,PERC H330 Adp
size=1.8T features='0' hwhandler='0' wp=undef
`-+- policy='service-time 0' prio=1 status=undef
  `- 0:2:13:0 sdn 8:208 undef ready running
[root@hayes-03 ~]# multipath -l
mpathc (36d09466083d8e100233c183624c8911b) dm-0 DELL,PERC H330 Adp
size=1.8T features='0' hwhandler='0' wp=rw
`-+- policy='service-time 0' prio=0 status=active
  `- 0:2:13:0 sdn 8:208 active undef running
[root@hayes-03 ~]#  pvs
  PV                 VG Fmt  Attr PSize  PFree 
  /dev/mapper/mpathc    lvm2 ---  <1.82t <1.82t
Comment 11 errata-xmlrpc 2022-11-15 11:20:43 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 (lvm2 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-2022:8358