Duplicate PVs reported by LVM commands for non-multipath devices

Solution Verified - Updated -

Issue

  • The pvs command reports duplicate Physical Volumes (PVs) even though multipath is not configured.
  • The pvs command shows duplicate devices with the same PV UUID (PVID).
  • The pvs command shows the attribute d-- in the Attr column.
  • LVM commands display warnings indicating duplicate PVs or duplicate PVIDs for non-multipath devices.

Example output on RHEL 6, 7 and 8:

 # pvs -ao +uuid
   Reloading config files
   WARNING: Not using device /dev/sdf1 for PV jGHhXi-ewaC-NtHd-snEB-UEeN-jtHj-L2yZDS.
   WARNING: Not using device /dev/sdj1 for PV lUJcCR-elB0-fWyE-vunt-1dL2-pNSJ-KcBf15.
   WARNING: PV jGHhXi-ewaC-NtHd-snEB-UEeN-jtHj-L2yZDS prefers device /dev/sde1 because device was seen first.
   WARNING: PV lUJcCR-elB0-fWyE-vunt-1dL2-pNSJ-KcBf15 prefers device /dev/sdi1 because device was seen first.
   PV         VG     Fmt  Attr PSize    PFree    DevSize  PV UUID                                PMdaFree  PMdaSize  #PMda #PMdaUse 1st PE 
   /dev/sde1  vgname lvm2 a--  <100.00g       0  <100.00g jGHhXi-ewaC-NtHd-snEB-UEeN-jtHj-L2yZDS   507.50k  1020.00k     1        1   1.00m
   /dev/sdf1  vgname lvm2 d--        0        0  <100.00g jGHhXi-ewaC-NtHd-snEB-UEeN-jtHj-L2yZDS        0         0      0        0      0 
   /dev/sdi1  vgname lvm2 a--  <100.00g 1016.00m <100.00g lUJcCR-elB0-fWyE-vunt-1dL2-pNSJ-KcBf15   507.50k  1020.00k     1        1   1.00m
   /dev/sdj1  vgname lvm2 d--        0        0  <100.00g lUJcCR-elB0-fWyE-vunt-1dL2-pNSJ-KcBf15        0         0      0        0      0 

Example output on RHEL 9:

 # pvs -ao +uuid
 Reloading config files
   WARNING: found PVID PRrkA5Tre3sKHxJdLgwY1bkxb21n8Qkk on multiple devices /dev/sdb /dev/sdc.
   WARNING: duplicate PVIDs should be changed to be unique.
   WARNING: use lvmdevices to select a device for PVID PRrkA5Tre3sKHxJdLgwY1bkxb21n8Qkk.
   PV         VG    Fmt  Attr PSize  PFree DevSize PV UUID                                PMdaFree  PMdaSize  #PMda #PMdaUse 1st PE 
   /dev/sda3  rhel  lvm2 a--  48.41g    0   48.41g f1oO2h-B8YQ-jM1j-ImmE-FATi-gdhz-DseWD2   507.00k  1020.00k     1        1   1.00m
   Reloading config files

Environment

  • Red Hat Enterprise Linux 6 and above.

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