RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Bug 1445987 - RAID TAKEOVER: lvconvert segfault in _raid_add_target_line
Summary: RAID TAKEOVER: lvconvert segfault in _raid_add_target_line
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: lvm2
Version: 7.4
Hardware: x86_64
OS: Linux
unspecified
medium
Target Milestone: rc
: ---
Assignee: Heinz Mauelshagen
QA Contact: cluster-qe@redhat.com
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-04-26 22:48 UTC by Corey Marthaler
Modified: 2021-09-03 12:36 UTC (History)
9 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2017-05-26 14:30:46 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
verbose lvconvert attempt (529.11 KB, text/plain)
2017-04-26 22:51 UTC, Corey Marthaler 		no flags Details
View All

Description Corey Marthaler 2017-04-26 22:48:45 UTC 
Description of problem:
This is the issue in https://bugzilla.redhat.com/show_bug.cgi?id=1441334#c6 that appears to be an unrelated bug.



Scenario raid0: Convert Striped raid0 volume
********* Take over hash info for this scenario *********
* from type:    raid0
* to type:      raid4
* from legs:    2
* to legs:      2
* from region:  0
* to region:    2048.00k
* contiguous:   1
* snapshot:     0
******************************************************

Creating original volume on host-073...
host-073: lvcreate  --type raid0  -i 2 -n takeover -L 4G centipede2
Waiting until all mirror|raid volumes become fully syncd...
   1/1 mirror(s) are fully synced: ( 100.00% )
Sleeping 15 sec

Current volume device structure:
  LV                  Attr       LSize   Cpy%Sync Devices                                  
  takeover            rwi-a-r---   4.00g          takeover_rimage_0(0),takeover_rimage_1(0)
  [takeover_rimage_0] iwi-aor---   2.00g          /dev/sde1(0)                             
  [takeover_rimage_1] iwi-aor---   2.00g          /dev/sdf1(0)                             


Creating xfs on top of mirror(s) on host-073...
Mounting mirrored xfs filesystems on host-073...

TAKEOVER (with verbose): lvconvert --yes -R 2048.00k  --type raid4 centipede2/takeover
sh: line 1: 26654 Segmentation fault      (core dumped) lvconvert -vvvv --yes -R 2048.00k --type raid4 centipede2/takeover > /tmp/lvconvert.18843 2>&1



Core was generated by `lvconvert -vvvv --yes -R 2048.00k --type raid4 centipede2/takeover'.
Program terminated with signal 11, Segmentation fault.
#0  0x000055c2995f88bd in _raid_add_target_line (dm=0x55c29b1522f0, mem=<optimized out>, cmd=<optimized out>, target_state=<optimized out>, seg=0x55c29b127550, laopts=<optimized out>, 
    node=0x55c29b0ad928, len=8388608, pvmove_mirror_count=0x55c29b152308) at raid/raid.c:275
275                             uint64_t status = seg_lv(seg, s)->status;
Missing separate debuginfos, use: debuginfo-install bzip2-libs-1.0.6-13.el7.x86_64 elfutils-libelf-0.168-5.el7.x86_64 elfutils-libs-0.168-5.el7.x86_64 glibc-2.17-192.el7.x86_64 libattr-2.4.46-12.el7.x86_64 libblkid-2.23.2-39.el7.x86_64 libcap-2.22-9.el7.x86_64 libgcc-4.8.5-14.el7.x86_64 libselinux-2.5-11.el7.x86_64 libsepol-2.5-6.el7.x86_64 libuuid-2.23.2-39.el7.x86_64 ncurses-libs-5.9-13.20130511.el7.x86_64 pcre-8.32-17.el7.x86_64 readline-6.2-10.el7.x86_64 systemd-libs-219-35.el7.x86_64 xz-libs-5.2.2-1.el7.x86_64 zlib-1.2.7-17.el7.x86_64
(gdb) bt
#0  0x000055c2995f88bd in _raid_add_target_line (dm=0x55c29b1522f0, mem=<optimized out>, cmd=<optimized out>, target_state=<optimized out>, seg=0x55c29b127550, laopts=<optimized out>, 
    node=0x55c29b0ad928, len=8388608, pvmove_mirror_count=0x55c29b152308) at raid/raid.c:275
#1  0x000055c2995ff200 in _add_target_to_dtree (dm=<optimized out>, dnode=<optimized out>, seg=<optimized out>, laopts=<optimized out>) at activate/dev_manager.c:2512
#2  0x000055c299602153 in _add_segment_to_dtree (layer=0x0, laopts=<optimized out>, seg=<optimized out>, dnode=0x55c29b0ad928, dtree=0x55c29b0ad6f0, dm=0x55c29b1522f0)
    at activate/dev_manager.c:2710
#3  _add_new_lv_to_dtree (dm=dm@entry=0x55c29b1522f0, dtree=dtree@entry=0x55c29b0ad6f0, lv=lv@entry=0x55c29b1270e0, laopts=laopts@entry=0x7ffd4157fe80, layer=0x0)
    at activate/dev_manager.c:2899
#4  0x000055c299603637 in _tree_action (dm=dm@entry=0x55c29b1522f0, lv=lv@entry=0x55c29b1270e0, laopts=laopts@entry=0x7ffd4157fe80, action=action@entry=PRELOAD)
    at activate/dev_manager.c:3147
#5  0x000055c299605d36 in dev_manager_preload (dm=dm@entry=0x55c29b1522f0, lv=lv@entry=0x55c29b1270e0, laopts=laopts@entry=0x7ffd4157fe80, 
    flush_required=flush_required@entry=0x7ffd4157fe2c) at activate/dev_manager.c:3210
#6  0x000055c29955caf4 in _lv_preload (lv=lv@entry=0x55c29b1270e0, laopts=laopts@entry=0x7ffd4157fe80, flush_required=flush_required@entry=0x7ffd4157fe2c) at activate/activate.c:1414
#7  0x000055c29956166d in _lv_suspend (error_if_not_suspended=0, lv_pre=0x55c29b1270e0, lv=0x55c29b13b100, laopts=0x7ffd4157fe80, 
    lvid_s=0x7ffd41580fa0 "0LFnCknKYd4plqZOBOIlVLoz5TSyGSEP5JQsqnZhuevg7SYOFxZQcMgOgjsmuycg", cmd=0x55c29b067020) at activate/activate.c:2152
#8  lv_suspend_if_active (cmd=cmd@entry=0x55c29b067020, lvid_s=lvid_s@entry=0x7ffd41580fa0 "0LFnCknKYd4plqZOBOIlVLoz5TSyGSEP5JQsqnZhuevg7SYOFxZQcMgOgjsmuycg", 
    origin_only=origin_only@entry=0, exclusive=exclusive@entry=0, lv=<optimized out>, lv_pre=<optimized out>) at activate/activate.c:2265
#9  0x000055c29961743d in _file_lock_resource (cmd=0x55c29b067020, resource=0x7ffd41580fa0 "0LFnCknKYd4plqZOBOIlVLoz5TSyGSEP5JQsqnZhuevg7SYOFxZQcMgOgjsmuycg", flags=60, 
    lv=<optimized out>) at locking/file_locking.c:114
#10 0x000055c299592888 in _lock_vol (cmd=cmd@entry=0x55c29b067020, resource=<optimized out>, 
    resource@entry=0x7ffd41580fa0 "0LFnCknKYd4plqZOBOIlVLoz5TSyGSEP5JQsqnZhuevg7SYOFxZQcMgOgjsmuycg", flags=flags@entry=60, lv_op=lv_op@entry=LV_SUSPEND, lv=lv@entry=0x55c29b1270e0)
    at locking/locking.c:275
#11 0x000055c2995931d3 in lock_vol (cmd=0x55c29b067020, vol=<optimized out>, vol@entry=0x55c29b1270e0 "0LFnCknKYd4plqZOBOIlVLoz5TSyGSEP5JQsqnZhuevg7SYOFxZQcMgOgjsmuycg", flags=60, 
    lv=lv@entry=0x55c29b1270e0) at locking/locking.c:355
#12 0x000055c29959d17c in _lv_update_and_reload (lv=lv@entry=0x55c29b1270e0, origin_only=origin_only@entry=0) at metadata/lv_manip.c:6371
#13 0x000055c2995a5757 in lv_update_and_reload (lv=lv@entry=0x55c29b1270e0) at metadata/lv_manip.c:6397
#14 0x000055c2995d30b4 in _lv_update_reload_fns_reset_eliminate_lvs (lv=lv@entry=0x55c29b1270e0, origin_only=0, origin_only=0) at metadata/raid_manip.c:567
#15 0x000055c2995d6dfb in _takeover_upconvert_wrapper (lv=0x55c29b1270e0, new_segtype=0x55c29b0a5590, new_image_count=<optimized out>, new_data_copies=2, new_stripe_size=128, 
    new_region_size=4096, allocate_pvs=0x55c29b126378, force=<optimized out>, yes=<optimized out>, new_stripes=0) at metadata/raid_manip.c:5195
#16 0x000055c2995d9f63 in lv_raid_convert (lv=lv@entry=0x55c29b1270e0, new_segtype=0x55c29b0a5590, yes=1, force=0, new_stripes=0, new_stripe_size_supplied=<optimized out>, 
    new_stripe_size=128, new_region_size=4096, allocate_pvs=0x55c29b126378) at metadata/raid_manip.c:6072
#17 0x000055c29952515d in _lvconvert_raid (lv=lv@entry=0x55c29b1270e0, lp=lp@entry=0x7ffd41581940) at lvconvert.c:1401
#18 0x000055c299526f5c in _convert_striped_raid (cmd=<optimized out>, lp=0x7ffd41581940, lv=0x55c29b1270e0) at lvconvert.c:1609
#19 _convert_striped (lp=<optimized out>, lv=<optimized out>, cmd=<optimized out>) at lvconvert.c:1676
#20 _lvconvert_raid_types (cmd=cmd@entry=0x55c29b067020, lv=lv@entry=0x55c29b1270e0, lp=lp@entry=0x7ffd41581940) at lvconvert.c:1749
#21 0x000055c29952717a in _lvconvert_raid_types_single (cmd=cmd@entry=0x55c29b067020, lv=0x55c29b1270e0, handle=handle@entry=0x55c29b0b45e8) at lvconvert.c:4241
#22 0x000055c29954bc38 in process_each_lv_in_vg (cmd=cmd@entry=0x55c29b067020, vg=vg@entry=0x55c29b1262a0, arg_lvnames=arg_lvnames@entry=0x7ffd41581820, 
---Type <return> to continue, or q <return> to quit---
    tags_in=tags_in@entry=0x7ffd415817d0, stop_on_error=stop_on_error@entry=0, handle=handle@entry=0x55c29b0b45e8, 
    check_single_lv=check_single_lv@entry=0x55c299521230 <_lvconvert_raid_types_check>, process_single_lv=process_single_lv@entry=0x55c299527100 <_lvconvert_raid_types_single>)
    at toollib.c:3134
#23 0x000055c29954d084 in _process_lv_vgnameid_list (process_single_lv=0x55c299527100 <_lvconvert_raid_types_single>, check_single_lv=0x55c299521230 <_lvconvert_raid_types_check>, 
    handle=0x55c29b0b45e8, arg_tags=0x7ffd415817d0, arg_lvnames=0x7ffd415817f0, arg_vgnames=0x7ffd415817e0, vgnameids_to_process=0x7ffd41581810, read_flags=1048576, cmd=0x55c29b067020)
    at toollib.c:3629
#24 process_each_lv (cmd=cmd@entry=0x55c29b067020, argc=argc@entry=1, argv=<optimized out>, one_vgname=one_vgname@entry=0x0, one_lvname=one_lvname@entry=0x0, 
    read_flags=read_flags@entry=1048576, handle=handle@entry=0x55c29b0b45e8, check_single_lv=check_single_lv@entry=0x55c299521230 <_lvconvert_raid_types_check>, 
    process_single_lv=process_single_lv@entry=0x55c299527100 <_lvconvert_raid_types_single>) at toollib.c:3781
#25 0x000055c2995293b8 in lvconvert_raid_types_cmd (cmd=0x55c29b067020, argc=<optimized out>, argv=<optimized out>) at lvconvert.c:4328
#26 0x000055c2995350c8 in lvm_run_command (cmd=cmd@entry=0x55c29b067020, argc=1, argc@entry=8, argv=0x7ffd41581e10, argv@entry=0x7ffd41581dd8) at lvmcmdline.c:2925
#27 0x000055c299535db3 in lvm2_main (argc=8, argv=0x7ffd41581dd8) at lvmcmdline.c:3454
#28 0x00007fbc5ec02c05 in __libc_start_main () from /lib64/libc.so.6
#29 0x000055c299514e8e in _start ()



Version-Release number of selected component (if applicable):
3.10.0-651.el7.x86_64

lvm2-2.02.170-2.el7    BUILT: Thu Apr 13 14:37:43 CDT 2017
lvm2-libs-2.02.170-2.el7    BUILT: Thu Apr 13 14:37:43 CDT 2017
lvm2-cluster-2.02.170-2.el7    BUILT: Thu Apr 13 14:37:43 CDT 2017
device-mapper-1.02.139-2.el7    BUILT: Thu Apr 13 14:37:43 CDT 2017
device-mapper-libs-1.02.139-2.el7    BUILT: Thu Apr 13 14:37:43 CDT 2017
device-mapper-event-1.02.139-2.el7    BUILT: Thu Apr 13 14:37:43 CDT 2017
device-mapper-event-libs-1.02.139-2.el7    BUILT: Thu Apr 13 14:37:43 CDT 2017
device-mapper-persistent-data-0.7.0-0.1.rc6.el7    BUILT: Mon Mar 27 10:15:46 CDT 2017
Comment 2 Corey Marthaler 2017-04-26 22:51:50 UTC 
Created attachment 1274454 [details]
verbose lvconvert attempt
Comment 3 David Teigland 2017-05-19 21:19:55 UTC 
Corey, this works for me, so if you can reproduce it save the core file (or better I can log in and run gdb on the machine.)
Comment 4 David Teigland 2017-05-22 14:47:51 UTC 
Saved this core if more info is needed.


Core was generated by `lvconvert --yes -R 2048.00k --type raid4 centipede2/takeover'.
Program terminated with signal 11, Segmentation fault.
#0  0x000055fee48ab8cb in _add_dev_to_dtree (dm=dm@entry=0x55fee6ab2360, 
    dtree=dtree@entry=0x55fee6a6daa0, lv=lv@entry=0x55fee6a78170, layer=layer@entry=0x0)
    at activate/dev_manager.c:1723
1723		if (!(name = dm_build_dm_name(dm->mem, lv->vg->name, lv->name, layer)))
Missing separate debuginfos, use: debuginfo-install bzip2-libs-1.0.6-13.el7.x86_64 elfutils-libelf-0.168-5.el7.x86_64 elfutils-libs-0.168-5.el7.x86_64 glibc-2.17-194.el7.x86_64 libattr-2.4.46-12.el7.x86_64 libblkid-2.23.2-39.el7.x86_64 libcap-2.22-9.el7.x86_64 libgcc-4.8.5-14.el7.x86_64 libselinux-2.5-11.el7.x86_64 libsepol-2.5-6.el7.x86_64 libuuid-2.23.2-39.el7.x86_64 ncurses-libs-5.9-13.20130511.el7.x86_64 pcre-8.32-17.el7.x86_64 readline-6.2-10.el7.x86_64 systemd-libs-219-38.el7.x86_64 xz-libs-5.2.2-1.el7.x86_64 zlib-1.2.7-17.el7.x86_64
(gdb) bt
#0  0x000055fee48ab8cb in _add_dev_to_dtree (dm=dm@entry=0x55fee6ab2360, 
    dtree=dtree@entry=0x55fee6a6daa0, lv=lv@entry=0x55fee6a78170, layer=layer@entry=0x0)
    at activate/dev_manager.c:1723
#1  0x000055fee48abdd0 in _add_lv_to_dtree (dm=dm@entry=0x55fee6ab2360, 
    dtree=dtree@entry=0x55fee6a6daa0, lv=0x55fee6a78170, origin_only=origin_only@entry=0)
    at activate/dev_manager.c:2030
#2  0x000055fee48ac22b in _add_lv_to_dtree (dm=dm@entry=0x55fee6ab2360, 
    dtree=dtree@entry=0x55fee6a6daa0, lv=lv@entry=0x55fee6a87150, origin_only=0)
    at activate/dev_manager.c:2185
#3  0x000055fee48afdd4 in _create_partial_dtree (origin_only=0, lv=0x55fee6a87150, 
    dm=0x55fee6ab2360) at activate/dev_manager.c:2210
#4  _tree_action (dm=dm@entry=0x55fee6ab2360, lv=lv@entry=0x55fee6a87150, 
    laopts=laopts@entry=0x7fff1dbbfd60, action=action@entry=PRELOAD)
    at activate/dev_manager.c:3102
#5  0x000055fee48b2796 in dev_manager_preload (dm=dm@entry=0x55fee6ab2360, 
    lv=lv@entry=0x55fee6a87150, laopts=laopts@entry=0x7fff1dbbfd60, 
    flush_required=flush_required@entry=0x7fff1dbbfd0c) at activate/dev_manager.c:3210
#6  0x000055fee48090a4 in _lv_preload (lv=lv@entry=0x55fee6a87150, 
    laopts=laopts@entry=0x7fff1dbbfd60, 
    flush_required=flush_required@entry=0x7fff1dbbfd0c) at activate/activate.c:1414
#7  0x000055fee480dc1d in _lv_suspend (error_if_not_suspended=0, lv_pre=0x55fee6a87150, 
    lv=0x55fee6a9b170, laopts=0x7fff1dbbfd60, 
    lvid_s=0x7fff1dbc0e80 "sNM4hOHdQ39rEw82Qp9KH6X9khLJtAcjY4fHuctxCxB8R0rMcGM0H3aDKXyx1ed---Type <return> to continue, or q <return> to quit---
w", cmd=0x55fee69c9020) at activate/activate.c:2152
#8  lv_suspend_if_active (cmd=cmd@entry=0x55fee69c9020, 
    lvid_s=lvid_s@entry=0x7fff1dbc0e80 "sNM4hOHdQ39rEw82Qp9KH6X9khLJtAcjY4fHuctxCxB8R0rMcGM0H3aDKXyx1edw", origin_only=origin_only@entry=0, exclusive=exclusive@entry=0, 
    lv=<optimized out>, lv_pre=<optimized out>) at activate/activate.c:2265
#9  0x000055fee48c3e9d in _file_lock_resource (cmd=0x55fee69c9020, 
    resource=0x7fff1dbc0e80 "sNM4hOHdQ39rEw82Qp9KH6X9khLJtAcjY4fHuctxCxB8R0rMcGM0H3aDKXyx1edw", flags=60, lv=<optimized out>) at locking/file_locking.c:114
#10 0x000055fee483ee38 in _lock_vol (cmd=cmd@entry=0x55fee69c9020, 
    resource=<optimized out>, 
    resource@entry=0x7fff1dbc0e80 "sNM4hOHdQ39rEw82Qp9KH6X9khLJtAcjY4fHuctxCxB8R0rMcGM0H3aDKXyx1edw", flags=flags@entry=60, lv_op=lv_op@entry=LV_SUSPEND, 
    lv=lv@entry=0x55fee6a87150) at locking/locking.c:275
#11 0x000055fee483f783 in lock_vol (cmd=0x55fee69c9020, vol=<optimized out>, 
    vol@entry=0x55fee6a87150 "sNM4hOHdQ39rEw82Qp9KH6X9khLJtAcjY4fHuctxCxB8R0rMcGM0H3aDKXyx1edw", flags=60, lv=lv@entry=0x55fee6a87150) at locking/locking.c:355
#12 0x000055fee484972c in _lv_update_and_reload (lv=lv@entry=0x55fee6a87150, 
    origin_only=origin_only@entry=0) at metadata/lv_manip.c:6371
#13 0x000055fee4851d07 in lv_update_and_reload (lv=lv@entry=0x55fee6a87150)
    at metadata/lv_manip.c:6397
#14 0x000055fee487efe6 in _lv_update_reload_fns_reset_eliminate_lvs (
    lv=lv@entry=0x55fee6a87150, origin_only=0, origin_only=0)
    at metadata/raid_manip.c:580
#15 0x000055fee4883716 in _takeover_upconvert_wrapper (lv=0x55fee6a87150, 
    new_segtype=0x55fee6a07590, new_image_count=<optimized out>, new_data_copies=2, 
    new_stripe_size=<optimized out>, new_region_size=<optimized out>, 
    allocate_pvs=0x55fee6a863e8, force=<optimized out>, yes=<optimized out>, 
    new_stripes=0) at metadata/raid_manip.c:5274
#16 0x000055fee48869d3 in lv_raid_convert (lv=lv@entry=0x55fee6a87150, 
    new_segtype=0x55fee6a07590, yes=1, force=0, new_stripes=0, 
    new_stripe_size_supplied=<optimized out>, new_stripe_size=128, new_region_size=4096, 
    allocate_pvs=0x55fee6a863e8) at metadata/raid_manip.c:6143
#17 0x000055fee47d121d in _lvconvert_raid (lv=lv@entry=0x55fee6a87150, 
    lp=lp@entry=0x7fff1dbc1820) at lvconvert.c:1408
#18 0x000055fee47d307c in _convert_striped_raid (cmd=<optimized out>, lp=0x7fff1dbc1820, 
    lv=0x55fee6a87150) at lvconvert.c:1617
#19 _convert_striped (lp=<optimized out>, lv=<optimized out>, cmd=<optimized out>)
    at lvconvert.c:1684
#20 _lvconvert_raid_types (cmd=cmd@entry=0x55fee69c9020, lv=lv@entry=0x55fee6a87150, 
    lp=lp@entry=0x7fff1dbc1820) at lvconvert.c:1757
#21 0x000055fee47d329a in _lvconvert_raid_types_single (cmd=cmd@entry=0x55fee69c9020, 
    lv=0x55fee6a87150, handle=handle@entry=0x55fee6a14ff8) at lvconvert.c:4249
#22 0x000055fee47f81e8 in process_each_lv_in_vg (cmd=cmd@entry=0x55fee69c9020, 
    vg=vg@entry=0x55fee6a86310, arg_lvnames=arg_lvnames@entry=0x7fff1dbc1700, 
    tags_in=tags_in@entry=0x7fff1dbc16b0, stop_on_error=stop_on_error@entry=0, 
    handle=handle@entry=0x55fee6a14ff8, 
---Type <return> to continue, or q <return> to quit---
    check_single_lv=check_single_lv@entry=0x55fee47cd2f0 <_lvconvert_raid_types_check>, 
    process_single_lv=process_single_lv@entry=0x55fee47d3220 <_lvconvert_raid_types_single>) at toollib.c:3136
#23 0x000055fee47f9634 in _process_lv_vgnameid_list (
    process_single_lv=0x55fee47d3220 <_lvconvert_raid_types_single>, 
    check_single_lv=0x55fee47cd2f0 <_lvconvert_raid_types_check>, handle=0x55fee6a14ff8, 
    arg_tags=0x7fff1dbc16b0, arg_lvnames=0x7fff1dbc16d0, arg_vgnames=0x7fff1dbc16c0, 
    vgnameids_to_process=0x7fff1dbc16f0, read_flags=1048576, cmd=0x55fee69c9020)
    at toollib.c:3631
#24 process_each_lv (cmd=cmd@entry=0x55fee69c9020, argc=argc@entry=1, 
    argv=<optimized out>, one_vgname=one_vgname@entry=0x0, 
    one_lvname=one_lvname@entry=0x0, read_flags=read_flags@entry=1048576, 
    handle=handle@entry=0x55fee6a14ff8, 
    check_single_lv=check_single_lv@entry=0x55fee47cd2f0 <_lvconvert_raid_types_check>, 
    process_single_lv=process_single_lv@entry=0x55fee47d3220 <_lvconvert_raid_types_single>) at toollib.c:3783
#25 0x000055fee47d54f8 in lvconvert_raid_types_cmd (cmd=0x55fee69c9020, 
    argc=<optimized out>, argv=<optimized out>) at lvconvert.c:4336
#26 0x000055fee47e1198 in lvm_run_command (cmd=cmd@entry=0x55fee69c9020, argc=1, 
    argc@entry=7, argv=0x7fff1dbc1ce8, argv@entry=0x7fff1dbc1cb8) at lvmcmdline.c:2951
#27 0x000055fee47e21f3 in lvm2_main (argc=7, argv=0x7fff1dbc1cb8) at lvmcmdline.c:3485
#28 0x00007f7ebab6ac05 in __libc_start_main () from /lib64/libc.so.6
#29 0x000055fee47c0ece in _start ()


(gdb) frame
#2  0x000055fee48ac22b in _add_lv_to_dtree (dm=dm@entry=0x55fee6ab2360, 
    dtree=dtree@entry=0x55fee6a6daa0, lv=lv@entry=0x55fee6a87150, origin_only=0)
    at activate/dev_manager.c:2185
2185				    !_add_lv_to_dtree(dm, dtree, seg_metalv(seg, s), 0))


Looks like the meta_areas[0] value is bad:

(gdb) p *((struct logical_volume *)(seg->meta_areas[0].u.lv.lv))
$14 = {lvid = {id = {{
        uuid = "\002\000\000\000\000\000\000\000\221\b\000\000\000\000\000\000\310\\\360\272~\177\000\000\310\\\360\272~\177\000"}, {
        uuid = "p\201\247\346\376U\000\000p\201\247\346\376U\000\000\000\000\000\000\000\000\000\000\002\000\000\000\000\000\000"}}, 
    s = "\002\000\000\000\000\000\000\000\221\b\000\000\000\000\000\000\310\\\360\272~\177\000\000\310\\\360\272~\177\000\000p\201\247\346\376U\000\000p\201\247\346\376U\000\000\000\000\000\000\000\000\000\000\002\000\000\000\000\000\000\000\330{\250\346\376U\000"}, 
  name = 0x0, vg = 0x2, status = 94553279856408, alloc = ALLOC_INVALID, profile = 0x0, 
  read_ahead = 1634560370, major = 6251879, minor = 0, size = 0, le_count = 2065, 
  origin_count = 0, external_count = 3136314536, snapshot_segs = {
    n = 0x7f7ebaf05ca8 <main_arena+1352>, p = 0x55fee6a781f0}, 
  snapshot = 0x55fee6a781f0, rdevice = 0x55fee6a758e0, rsites = {n = 0x55fee6a179c0, 
    p = 0x55fee6a81d70}, segments = {n = 0x55fee6a78220, p = 0x0}, tags = {n = 0x0, 
    p = 0x0}, segs_using_this_lv = {n = 0x0, p = 0x0}, indirect_glvs = {n = 0x0, 
    p = 0x0}, this_glv = 0x0, timestamp = 94553279792488, new_lock_args = 0, 
  hostname = 0x55fee6a78710 "\220\202\247\346\376U", 
  lock_args = 0x55fee6a78710 "\220\202\247\346\376U"}
Comment 5 Alasdair Kergon 2017-05-24 23:15:54 UTC 
Let's retest this with the latest code (which fixed an in-memory metadata corruption problem).

If it still fails, grab fresh -vvvv traces and gdb backtraces.
Comment 6 Corey Marthaler 2017-05-26 14:30:46 UTC 
This appears to be fixed in the latest rpms. Will reopen if seen again. For testing details, see: https://bugzilla.redhat.com/show_bug.cgi?id=1441334#c14


3.10.0-651.el7.x86_64
lvm2-2.02.171-2.el7    BUILT: Wed May 24 09:02:34 CDT 2017
lvm2-libs-2.02.171-2.el7    BUILT: Wed May 24 09:02:34 CDT 2017
lvm2-cluster-2.02.171-2.el7    BUILT: Wed May 24 09:02:34 CDT 2017
device-mapper-1.02.140-2.el7    BUILT: Wed May 24 09:02:34 CDT 2017
device-mapper-libs-1.02.140-2.el7    BUILT: Wed May 24 09:02:34 CDT 2017
device-mapper-event-1.02.140-2.el7    BUILT: Wed May 24 09:02:34 CDT 2017
device-mapper-event-libs-1.02.140-2.el7    BUILT: Wed May 24 09:02:34 CDT 2017
device-mapper-persistent-data-0.7.0-0.1.rc6.el7    BUILT: Mon Mar 27 10:15:46 CDT 2017
Note You need to log in before you can comment on or make changes to this bug.