[CentOS] LVM failure after CentOS 7.6 upgrade -- possible corruption

On 12/5/18 9:56 AM, Simon Matter wrote:
>> When running "pvs" on the broken system, no RAID volumes
>> were listed, only component devices....
>> After updating, look at the output of "pvs" if you use LVM on software
>> RAID.
> What exactly did `pvs' show and instead of what?

It should print:

# pvs
   PV         VG          Fmt  Attr PSize   PFree
   /dev/md127 VolGroup    lvm2 a--   <2.73t <768.41g
   /dev/md2   BackupGroup lvm2 a--   <2.73t       0
   /dev/sdd1  VolGroup    lvm2 a--  <55.88g       0

and IIRC, it printed:

# pvs
   PV         VG          Fmt  Attr PSize   PFree
   /dev/sda3 VolGroup    lvm2 a--   <2.73t <768.41g
   /dev/sdc1   BackupGroup lvm2 a--   <2.73t       0