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Bug 1591504

Summary: dmstats list --group "Command failed."
Product: Red Hat Enterprise Linux 7 Reporter: Corey Marthaler <cmarthal>
Component: lvm2Assignee: Bryn M. Reeves <bmr>
lvm2 sub component: Default / Unclassified QA Contact: cluster-qe <cluster-qe>
Status: CLOSED DUPLICATE Docs Contact:
Severity: low    
Priority: unspecified CC: agk, bmr, heinzm, jbrassow, msnitzer, prajnoha, prockai, zkabelac
Version: 7.6   
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: 2018-06-28 13:28:54 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
verbose dmstats attempt none

Description Corey Marthaler 2018-06-14 22:21:02 UTC 
Description of problem:

dmstats create --filemap /mnt/span_second_part_primary_raid5_2legs_1/host-092.virt.lab.msp.redhat.com_load

[root@host-092 ~]# dmstats report --group

[root@host-092 ~]# dmstats list --group
Command failed.
Name                                  GrpID RgID ObjType RgStart RgSize  #Areas ArSize  ProgID 
host-092.virt.lab.msp.redhat.com_load     0    0 group     9.00m 977.00k      1 977.00k dmstats
[root@host-092 ~]# echo $?
1

Version-Release number of selected component (if applicable):
3.10.0-905.el7.x86_64

lvm2-2.02.178-2.el7    BUILT: Thu Jun 14 06:17:42 CDT 2018
lvm2-libs-2.02.178-2.el7    BUILT: Thu Jun 14 06:17:42 CDT 2018
lvm2-cluster-2.02.178-2.el7    BUILT: Thu Jun 14 06:17:42 CDT 2018
lvm2-lockd-2.02.178-2.el7    BUILT: Thu Jun 14 06:17:42 CDT 2018
lvm2-python-boom-0.8.5-5.el7    BUILT: Thu Jun 14 06:21:09 CDT 2018
cmirror-2.02.178-2.el7    BUILT: Thu Jun 14 06:17:42 CDT 2018
device-mapper-1.02.147-2.el7    BUILT: Thu Jun 14 06:17:42 CDT 2018
device-mapper-libs-1.02.147-2.el7    BUILT: Thu Jun 14 06:17:42 CDT 2018
device-mapper-event-1.02.147-2.el7    BUILT: Thu Jun 14 06:17:42 CDT 2018
device-mapper-event-libs-1.02.147-2.el7    BUILT: Thu Jun 14 06:17:42 CDT 2018
device-mapper-persistent-data-0.7.3-3.el7    BUILT: Tue Nov 14 05:07:18 CST 2017

How reproducible:
Everytime
Comment 2 Corey Marthaler 2018-06-14 22:22:37 UTC 
Created attachment 1451633 [details]
verbose dmstats attempt
Comment 3 Bryn M. Reeves 2018-06-15 11:11:28 UTC 
Both runs did actually output a report:

Name                                  GrpID RgID ObjType RgStart RgSize  #Areas ArID ArStart ArSize  ProgID 
host-092.virt.lab.msp.redhat.com_load     0    0 area      9.00m 977.00k      1    0   9.00m 977.00k dmstats
host-092.virt.lab.msp.redhat.com_load     0    0 group     9.00m 977.00k      1    0   9.00m 977.00k dmstats

Very odd: off the top of my head I'm not sure what's happening here but there are a bunch of <backtrace> in the output that need tracking down.

What's also odd is that "Command failed." appears before the successful -vvv output.

Any idea on a reproducer? Is there anything odd or unusual about the files?

It'd help to know the file system they are on, although it shouldn't make a difference as it obviously supports the FIEMAP ioctl. Also if you could post the "filefrag -v" it might give some extra hints.