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Bug 1593461 - splitting mirrors using VG on cmdline results in segfault
Summary: splitting mirrors using VG on cmdline results in segfault
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: lvm2
Version: 7.6
Hardware: x86_64
OS: Linux
unspecified
medium
Target Milestone: rc
: ---
Assignee: David Teigland
QA Contact: cluster-qe@redhat.com
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-06-20 22:44 UTC by Corey Marthaler
Modified: 2021-09-03 12:50 UTC (History)
8 users (show)

Fixed In Version: lvm2-2.02.179-3.el7
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2018-10-30 11:03:47 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2018:3193 0 None None None 2018-10-30 11:04:28 UTC

Description Corey Marthaler 2018-06-20 22:44:04 UTC 
Description of problem:

SCENARIO - [split_mirror_using_vg_in_new_name]
Create a 3-way mirror and split off image using the VG name in the new split off image
host-086.virt.lab.msp.redhat.com: lvcreate --type mirror -m 3 -n split_using_vg_name -L 300M split_image
Waiting until all mirror|raid volumes become fully syncd...
   1/1 mirror(s) are fully synced: ( 100.00% )
Sleeping 15 sec


  split_using_vg_name            split_image   mwi-a-m--- 300.00m    [split_using_vg_name_mlog] 100.00   split_using_vg_name_mimage_0(0),split_using_vg_name_mimage_1(0),split_using_vg_name_mimage_2(0),split_using_vg_name_mimage_3(0)
  [split_using_vg_name_mimage_0] split_image   iwi-aom--- 300.00m                                        /dev/sda1(0)
  [split_using_vg_name_mimage_1] split_image   iwi-aom--- 300.00m                                        /dev/sdb1(0)
  [split_using_vg_name_mimage_2] split_image   iwi-aom--- 300.00m                                        /dev/sdc1(0)
  [split_using_vg_name_mimage_3] split_image   iwi-aom--- 300.00m                                        /dev/sdd1(0)
  [split_using_vg_name_mlog]     split_image   lwi-aom---   4.00m                                        /dev/sdf1(0)



split image by including VG name in the newly split off image...
host-086.virt.lab.msp.redhat.com: lvconvert --yes --splitmirrors 1 --name split_image/new split_image/split_using_vg_name
couldn't split off using VG name

[ 4229.754798] lvconvert[8476]: segfault at 0 ip 0000561e64380b35 sp 00007ffc400b8ee0 error 4 in lvm[561e64298000+1d9000]

Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `lvconvert --yes --splitmirrors 1 --name split_image/new split_image/split_using'.
Program terminated with signal 11, Segmentation fault.
#0  0x0000557f25635b35 in _split_mirror_images (lv=lv@entry=0x557f27bf7e68, split_name=split_name@entry=0x7ffdd55acf25 "new", split_count=split_count@entry=1, 
    removable_pvs=removable_pvs@entry=0x557f27bf7400) at metadata/mirror.c:713
713             if (!strcmp(lv->vg->lock_type, "dlm"))
(gdb) bt
#0  0x0000557f25635b35 in _split_mirror_images (lv=lv@entry=0x557f27bf7e68, split_name=split_name@entry=0x7ffdd55acf25 "new", split_count=split_count@entry=1, 
    removable_pvs=removable_pvs@entry=0x557f27bf7400) at metadata/mirror.c:713
#1  0x0000557f25638490 in lv_split_mirror_images (lv=lv@entry=0x557f27bf7e68, split_name=0x7ffdd55acf25 "new", split_count=1, removable_pvs=removable_pvs@entry=0x557f27bf7400)
    at metadata/mirror.c:2197
#2  0x0000557f25592226 in _lvconvert_mirrors_aux (cmd=cmd@entry=0x557f27b24020, lv=lv@entry=0x557f27bf7e68, lp=lp@entry=0x7ffdd55ac620, new_mimage_count=new_mimage_count@entry=3, new_log_count=1, 
    pvh=0x557f27bf7400, operable_pvs=0x557f27bf7400) at lvconvert.c:976
#3  0x0000557f25592a60 in _lvconvert_mirrors (cmd=cmd@entry=0x557f27b24020, lv=lv@entry=0x557f27bf7e68, lp=lp@entry=0x7ffdd55ac620) at lvconvert.c:1239
#4  0x0000557f255932de in _convert_striped_mirror (lp=0x7ffdd55ac620, lv=0x557f27bf7e68, cmd=0x557f27b24020) at lvconvert.c:1624
#5  _convert_striped (lp=<optimized out>, lv=<optimized out>, cmd=<optimized out>) at lvconvert.c:1705
#6  _lvconvert_raid_types (cmd=0x557f27b24020, lv=0x557f27bf7e68, lp=0x7ffdd55ac620) at lvconvert.c:1781
#7  0x0000557f255b8b4d in process_each_lv_in_vg (cmd=cmd@entry=0x557f27b24020, vg=vg@entry=0x557f27bf7340, arg_lvnames=arg_lvnames@entry=0x7ffdd55ac500, tags_in=tags_in@entry=0x7ffdd55ac4b0, 
    stop_on_error=stop_on_error@entry=0, handle=handle@entry=0x557f27b6a848, check_single_lv=check_single_lv@entry=0x0, 
    process_single_lv=process_single_lv@entry=0x557f25593740 <_lvconvert_split_mirror_images_single>) at toollib.c:3233
#8  0x0000557f255ba08f in _process_lv_vgnameid_list (process_single_lv=0x557f25593740 <_lvconvert_split_mirror_images_single>, check_single_lv=0x0, handle=0x557f27b6a848, arg_tags=0x7ffdd55ac4b0, 
    arg_lvnames=0x7ffdd55ac4d0, arg_vgnames=0x7ffdd55ac4c0, vgnameids_to_process=0x7ffdd55ac4f0, read_flags=1048576, cmd=0x557f27b24020) at toollib.c:3697
#9  process_each_lv (cmd=cmd@entry=0x557f27b24020, 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=0x557f27b6a848, check_single_lv=check_single_lv@entry=0x0, process_single_lv=process_single_lv@entry=0x557f25593740 <_lvconvert_split_mirror_images_single>) at toollib.c:3855
#10 0x0000557f25595afc in lvconvert_split_mirror_images_cmd (cmd=0x557f27b24020, argc=<optimized out>, argv=<optimized out>) at lvconvert.c:4708
#11 0x0000557f255a189f in lvm_run_command (cmd=0x557f27b24020, argc=1, argv=0x7ffdd55acad8) at lvmcmdline.c:3001
#12 0x0000557f255a2b2e in lvm2_main (argc=7, argv=0x7ffdd55acaa8) at lvmcmdline.c:3581
#13 0x00007f1bc536d3d5 in __libc_start_main (main=0x557f2557ec00 <main>, argc=7, ubp_av=0x7ffdd55acaa8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffdd55aca98)
    at ../csu/libc-start.c:274
#14 0x0000557f2557ec2e in _start ()


Version-Release number of selected component (if applicable):
3.10.0-906.el7.x86_64

lvm2-2.02.179-1.el7    BUILT: Mon Jun 18 01:12:41 CDT 2018
lvm2-libs-2.02.179-1.el7    BUILT: Mon Jun 18 01:12:41 CDT 2018
lvm2-cluster-2.02.179-1.el7    BUILT: Mon Jun 18 01:12:41 CDT 2018
lvm2-lockd-2.02.179-1.el7    BUILT: Mon Jun 18 01:12:41 CDT 2018
lvm2-python-boom-0.8.5-6.el7    BUILT: Mon Jun 18 01:16:13 CDT 2018
cmirror-2.02.179-1.el7    BUILT: Mon Jun 18 01:12:41 CDT 2018
device-mapper-1.02.148-1.el7    BUILT: Mon Jun 18 01:12:41 CDT 2018
device-mapper-libs-1.02.148-1.el7    BUILT: Mon Jun 18 01:12:41 CDT 2018
device-mapper-event-1.02.148-1.el7    BUILT: Mon Jun 18 01:12:41 CDT 2018
device-mapper-event-libs-1.02.148-1.el7    BUILT: Mon Jun 18 01:12:41 CDT 2018


How reproducible:
Everytime
Comment 3 Zdenek Kabelac 2018-06-22 10:49:06 UTC 
Fixed in stable branch with this commit:

https://www.redhat.com/archives/lvm-devel/2018-June/msg00175.html
Comment 5 Roman Bednář 2018-07-20 14:09:54 UTC 
Verified.


SCENARIO - [split_mirror_using_vg_in_new_name]
Create a 3-way mirror and split off image using the VG name in the new split off image
virt-365: lvcreate --type mirror -m 3 -n split_using_vg_name -L 300M split_image
Waiting until all mirror|raid volumes become fully syncd...
   1/1 mirror(s) are fully synced: ( 100.00% )
Sleeping 15 sec

split image by including VG name in the newly split off image...
virt-365: lvconvert --yes --splitmirrors 1 --name split_image/new split_image/split_using_vg_name

Deactivating LV split_image/new on virt-365... and removing
Deactivating LV split_image/split_using_vg_name on virt-365... and removing

------------------- Summary ---------------------
Testcase                                 Result    
--------                                 ------    
generic_setup                            PASS      
split_image_split_mirror_using_vg_i      PASS      
cleanup                                  PASS  




3.10.0-915.el7.x86_64

lvm2-2.02.179-4.el7    BUILT: Tue Jun 26 15:35:45 CEST 2018
lvm2-libs-2.02.179-4.el7    BUILT: Tue Jun 26 15:35:45 CEST 2018
lvm2-cluster-2.02.179-4.el7    BUILT: Tue Jun 26 15:35:45 CEST 2018
cmirror-2.02.179-4.el7    BUILT: Tue Jun 26 15:35:45 CEST 2018
device-mapper-1.02.148-4.el7    BUILT: Tue Jun 26 15:35:45 CEST 2018
device-mapper-libs-1.02.148-4.el7    BUILT: Tue Jun 26 15:35:45 CEST 2018
device-mapper-event-1.02.148-4.el7    BUILT: Tue Jun 26 15:35:45 CEST 2018
device-mapper-event-libs-1.02.148-4.el7    BUILT: Tue Jun 26 15:35:45 CEST 2018
device-mapper-persistent-data-0.7.3-3.el7    BUILT: Tue Nov 14 12:07:18 CET 2017
vdo-6.1.1.99-2.el7    BUILT: Thu Jun 21 05:36:06 CEST 2018
kmod-kvdo-6.1.1.99-1.el7    BUILT: Thu Jun 21 05:40:52 CEST 2018
cryptsetup-2.0.3-1.el7    BUILT: Wed Jun 20 17:26:29 CEST 2018
cryptsetup-libs-2.0.3-1.el7    BUILT: Wed Jun 20 17:26:29 CEST 2018
Comment 7 errata-xmlrpc 2018-10-30 11:03:47 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/RHBA-2018:3193
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