1503693 – extraction out of /dev prefixed name isn't working properly

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Bug 1503693 - extraction out of /dev prefixed name isn't working properly

Summary: extraction out of /dev prefixed name isn't working properly

Keywords:
Status:	CLOSED ERRATA
Alias:	None
Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	lvm2
Sub Component:
Version:	7.4
Hardware:	All
OS:	Linux
Priority:	unspecified
Severity:	low
Target Milestone:	rc
Target Release:	---
Assignee:	Zdenek Kabelac
QA Contact:	cluster-qe@redhat.com
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2017-10-18 14:41 UTC by John Pittman
Modified:	2021-09-03 12:49 UTC (History)
CC List:	10 users (show)
Fixed In Version:	lvm2-2.02.176-1.el7
Doc Type:	If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed:	2018-04-10 15:22:16 UTC
Target Upstream Version:
Embargoed:

Attachments	(Terms of Use)

Links
System	ID	Private	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHEA-2018:0853	0	None	None	None	2018-04-10 15:23:07 UTC

Description John Pittman 2017-10-18 14:41:23 UTC

Description of problem:

Extraction out of /dev prefixed name isn't working properly

Version-Release number of selected component (if applicable):

lvm2-2.02.171-8.el7
device-mapper-1.02.140-8.el7
kernel-3.10.0-681.el7

How reproducible:

- Error message indicated below with <=====?

[root@localhost ~]# vgcreate testvg /dev/sdb /dev/sdc
  Physical volume "/dev/sdb" successfully created.
  Physical volume "/dev/sdc" successfully created.
  Volume group "testvg" successfully created

[root@localhost ~]# lvcreate -L 900M -n slowdisk testvg /dev/sdb
  Logical volume "slowdisk" created.
[root@localhost ~]# lvcreate -L 400M -n cachedisk testvg /dev/sdc
  Logical volume "cachedisk" created.
[root@localhost ~]# lvcreate -L 100M -n metadisk testvg /dev/sdc
  Logical volume "metadisk" created.

[root@localhost ~]# lvconvert -y --type cache-pool /dev/testvg/cachedisk --poolmetadata /dev/testvg/metadisk
  WARNING: Converting logical volume testvg/cachedisk and testvg/metadisk to cache pool's data and metadata volumes with metadata wiping.
  THIS WILL DESTROY CONTENT OF LOGICAL VOLUME (filesystem etc.)
  Converted testvg/cachedisk_cdata to cache pool.

[root@localhost ~]# lvs -a
  LV                VG     Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  root              rhel   -wi-ao----  <6.67g                                                    
  swap              rhel   -wi-ao---- 820.00m                                                    
  cachedisk         testvg Cwi---C--- 400.00m                                                    
  [cachedisk_cdata] testvg Cwi------- 400.00m                                                    
  [cachedisk_cmeta] testvg ewi------- 100.00m                                                    
  [lvol0_pmspare]   testvg ewi------- 100.00m                                                    
  slowdisk          testvg -wi-a----- 900.00m  
  
[root@localhost ~]# lvconvert -y --type cache --cachepool /dev/testvg/cachedisk /dev/testvg/slowdisk
  VG name mismatch from position arg (testvg) and option arg ().  <=======?
  
[root@localhost ~]# dmsetup info -C
Name             Maj Min Stat Open Targ Event  UUID                                                                
rhel-swap        253   0 L--w    2    1      0 LVM-97gz0qcKkbyYE6dksaxG4Xdvf0N8Wd43wWaW8CIU71AYoi9T1JD151HmUvafk9Wy
rhel-root        253   1 L--w    1    1      0 LVM-97gz0qcKkbyYE6dksaxG4Xdvf0N8Wd430aAzxjTzEczPIdKPFKkBRm1dmttFdQk4
testvg-slowdisk  253   2 L--w    0    1      0 LVM-g10GkxS07ebJLolahA2ov5bQWNewOQJq6ImxNkBymq3TJuZG4rRX4Ep0g5Tfy7rb

[root@localhost ~]# lvconvert -y --type cache --cachepool testvg/cachedisk testvg/slowdisk
  Logical volume testvg/slowdisk is now cached.
  
[root@localhost ~]# lvs -a
  LV                VG     Attr       LSize   Pool        Origin           Data%  Meta%  Move Log Cpy%Sync Convert
  root              rhel   -wi-ao----  <6.67g                                                                     
  swap              rhel   -wi-ao---- 820.00m                                                                     
  [cachedisk]       testvg Cwi---C--- 400.00m                              0.14   0.10            0.00            
  [cachedisk_cdata] testvg Cwi-ao---- 400.00m                                                                     
  [cachedisk_cmeta] testvg ewi-ao---- 100.00m                                                                     
  [lvol0_pmspare]   testvg ewi------- 100.00m                                                                     
  slowdisk          testvg Cwi-a-C--- 900.00m [cachedisk] [slowdisk_corig] 0.14   0.10            0.00            
  [slowdisk_corig]  testvg owi-aoC--- 900.00m        
  
[root@localhost ~]# dmsetup info -C
Name                   Maj Min Stat Open Targ Event  UUID                                                                      
testvg-cachedisk_cmeta 253   4 L--w    1    1      0 LVM-g10GkxS07ebJLolahA2ov5bQWNewOQJqfHCj9o55c7ZS9M8IT6bHGnE5AHobqsuH-cmeta
testvg-slowdisk_corig  253   5 L--w    1    1      0 LVM-g10GkxS07ebJLolahA2ov5bQWNewOQJqIxjosHNXP3x6Z3arcD8pno5eXmHR0h2h-real 
rhel-swap              253   0 L--w    2    1      0 LVM-97gz0qcKkbyYE6dksaxG4Xdvf0N8Wd43wWaW8CIU71AYoi9T1JD151HmUvafk9Wy      
rhel-root              253   1 L--w    1    1      0 LVM-97gz0qcKkbyYE6dksaxG4Xdvf0N8Wd430aAzxjTzEczPIdKPFKkBRm1dmttFdQk4      
testvg-slowdisk        253   2 L--w    0    1      0 LVM-g10GkxS07ebJLolahA2ov5bQWNewOQJq6ImxNkBymq3TJuZG4rRX4Ep0g5Tfy7rb      
testvg-cachedisk_cdata 253   3 L--w    1    1      0 LVM-g10GkxS07ebJLolahA2ov5bQWNewOQJqO70OVWkyo6wRDcf77LzBW1fz8wTCQQrm-cdata

Actual results:

Strange error message

Expected results:

Unsure.  Either a descriptive error message or /dev expansion.

Comment 4 Zdenek Kabelac 2017-10-24 14:19:48 UTC

Fixed with upstream commit:
(regression from version 2.02.169)

https://www.redhat.com/archives/lvm-devel/2017-October/msg00057.html

Comment 6 Marian Csontos 2017-10-25 07:37:59 UTC

Test - lvconvert with /dev/ with internal cachepool device:

[ 0:02] lvcreate -L 2 -n $lv1 $vg [ 0:02] #lvconvert-cache.sh:96+ lvcreate -L 2 -n LV1 @PREFIX@vg [ 0:02] WARNING: This metadata update is NOT backed up. [ 0:02] Logical volume "LV1" created. [ 0:02] lvcreate --type cache-pool -l 1 -n ${lv1}_cachepool "$DM_DEV_DIR/$vg" [ 0:02] #lvconvert-cache.sh:97+ lvcreate --type cache-pool -l 1 -n LV1_cachepool /dev/@PREFIX@vg [ 0:02] Using default stripesize 64.00 KiB. [ 0:02] WARNING: This metadata update is NOT backed up. [ 0:02] Logical volume "LV1_cachepool" created. [ 0:03] lvconvert --cache --cachepool "$DM_DEV_DIR/$vg/${lv1}_cachepool" --cachemode writeback -Zy "$DM_DEV_DIR/$vg/$lv1" [ 0:03] #lvconvert-cache.sh:98+ lvconvert --cache --cachepool /dev/@PREFIX@vg/LV1_cachepool --cachemode writeback -Zy /dev/@PREFIX@vg/LV1 [ 0:03] WARNING: This metadata update is NOT backed up. [ 0:03] Logical volume @PREFIX@vg/LV1 is now cached. [ 0:03] lvremove -f $vg [ 0:03] #lvconvert-cache.sh:99+ lvremove -f @PREFIX@vg [ 0:03] Flushing 0 blocks for cache @PREFIX@vg/LV1. [ 0:03] WARNING: This metadata update is NOT backed up. [ 0:03] Logical volume "LV1_cachepool" successfully removed [ 0:03] Logical volume "LV1" successfully removed

Comment 8 Roman Bednář 2017-11-30 12:53:17 UTC

Marking verified with latest rpms. Converting a volume to cache now works with /dev prefix as well.

BEFORE PATCH:
# lvconvert -y --type cache --cachepool /dev/cache_sanity/CPOOL /dev/cache_sanity/linear
  VG name mismatch from position arg (cache_sanity) and option arg ().



AFTER_PATCH:
# lvconvert -y --type cache --cachepool /dev/cache_sanity/CPOOL /dev/cache_sanity/linear
# lvs -a -o lv_name,vg_name,pool_lv
  LV              VG            Pool   
  [CPOOL]         cache_sanity         
  [CPOOL_cdata]   cache_sanity         
  [CPOOL_cmeta]   cache_sanity         
  linear          cache_sanity  [CPOOL]
  [linear_corig]  cache_sanity         
  [lvol0_pmspare] cache_sanity   



3.10.0-799.el7.x86_64

lvm2-2.02.176-4.el7    BUILT: Wed Nov 15 11:21:19 CET 2017
lvm2-libs-2.02.176-4.el7    BUILT: Wed Nov 15 11:21:19 CET 2017
lvm2-cluster-2.02.176-4.el7    BUILT: Wed Nov 15 11:21:19 CET 2017
lvm2-lockd-2.02.176-4.el7    BUILT: Wed Nov 15 11:21:19 CET 2017
lvm2-python-boom-0.8-4.el7    BUILT: Wed Nov 15 11:23:09 CET 2017
cmirror-2.02.176-4.el7    BUILT: Wed Nov 15 11:21:19 CET 2017
device-mapper-1.02.145-4.el7    BUILT: Wed Nov 15 11:21:19 CET 2017
device-mapper-libs-1.02.145-4.el7    BUILT: Wed Nov 15 11:21:19 CET 2017
device-mapper-event-1.02.145-4.el7    BUILT: Wed Nov 15 11:21:19 CET 2017
device-mapper-event-libs-1.02.145-4.el7    BUILT: Wed Nov 15 11:21:19 CET 2017
device-mapper-persistent-data-0.7.3-3.el7    BUILT: Tue Nov 14 12:07:18 CET 2017
sanlock-3.5.0-1.el7    BUILT: Wed Apr 26 16:37:30 CEST 2017
sanlock-lib-3.5.0-1.el7    BUILT: Wed Apr 26 16:37:30 CEST 2017
vdo-6.1.0.55-10    BUILT: Fri Nov 17 21:03:36 CET 2017
kmod-kvdo-6.1.0.55-9.el7    BUILT: Fri Nov 17 22:48:23 CET 2017

Comment 11 errata-xmlrpc 2018-04-10 15:22:16 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, 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-2018:0853

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