lvdisplay command with -m switch produces segfault for cached logical volumes and cached POOL LVs
Issue
lvdisplaycommand with-mswitch produces segfault forcached logical volumesandcached POOL LVs.
[root@vm252-103 ~]# lvdisplay -vm /dev/example_vg/lv1
--- Logical volume ---
LV Path /dev/example_vg/lv1
LV Name lv1
VG Name example_vg
LV UUID LfgUSi-VQLP-Nueh-PYXp-ysCp-GFzL-92flsq
LV Write Access read/write
LV Creation host, time vm252-103.gsslab.pnq2.redhat.com, 2018-01-10 18:41:45 +0530
LV Cache pool name lv_cache
LV Cache origin name lv1_corig
LV Status available
# open 1
LV Size 4.00 GiB
Cache used blocks 0.14%
Cache metadata blocks 0.14%
Cache dirty blocks 0.00%
Cache read hits/misses 10 / 49
Cache wrt hits/misses 18 / 37
Cache demotions 0
Cache promotions 18
Current LE 1024
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:2
--- Segments ---
Logical extents 0 to 1023:
Type cache
Chunk size 64.00 KiB
Metadata format 2
Mode writethrough
Policy smq
Segmentation fault (core dumped) <-----------------
Environment
- Red Hat Enterprise Linux 7
- lvm2-2.02.171-8.el7
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