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  1. RHEL
  2. RHEL-141482

'vgreduce --removemissing' of missing raid1 + snapshot device results in endless loop

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      I was attempting to reproduce https://issues.redhat.com/browse/RHEL-1939 and came across this issue.

      DISTRO=RHEL-10.2-20251215.0                             
       
      kernel-6.12.0-172.el10    BUILT: Thu Dec 11 12:55:54 PM CET 2025
      lvm2-2.03.36-1.el10    BUILT: Sat Oct 25 04:42:32 AM CEST 2025
      lvm2-libs-2.03.36-1.el10    BUILT: Sat Oct 25 04:42:32 AM CEST 2025
      device-mapper-1.02.210-1.el10    BUILT: Sat Oct 25 04:42:32 AM CEST 2025
       
      [root@virt-555 ~]# lvs -a -o +devices
        LV                   VG   Attr       LSize   Pool Origin    Data%  Meta%  Move Log Cpy%Sync Convert Devices                                                          
        snap1                test swi-a-s--- 100.00m      test_raid 0.00                                    /dev/sdc(257)                                                    
        test_raid            test owi-aor---   1.00g                                       100.00           test_raid_rimage_0(0),test_raid_rimage_1(0),test_raid_rimage_2(0)
        [test_raid_rimage_0] test iwi-aor---   1.00g                                                        /dev/sda(1)                                                      
        [test_raid_rimage_1] test iwi-aor---   1.00g                                                        /dev/sdb(1)                                                      
        [test_raid_rimage_2] test iwi-aor---   1.00g                                                        /dev/sdc(1)                                                      
        [test_raid_rmeta_0]  test ewi-aor---   4.00m                                                        /dev/sda(0)                                                      
        [test_raid_rmeta_1]  test ewi-aor---   4.00m                                                        /dev/sdb(0)                                                      
        [test_raid_rmeta_2]  test ewi-aor---   4.00m                                                        /dev/sdc(0)                                                      
       
      [root@virt-555 ~]# echo offline > /sys/block/sdc/device/state
      [root@virt-555 ~]# pvscan --cache
        WARNING: Couldn't find device with uuid OpQj9s-jHjM-Wn8a-10sm-TFr5-vfxa-5sBQ4Y.
        pvscan[2648] PV /dev/sda online.
        WARNING: Couldn't find device with uuid OpQj9s-jHjM-Wn8a-10sm-TFr5-vfxa-5sBQ4Y.
        pvscan[2648] PV /dev/sdb online.
        WARNING: Couldn't find device with uuid OpQj9s-jHjM-Wn8a-10sm-TFr5-vfxa-5sBQ4Y.
        pvscan[2648] PV /dev/sdd online.
        pvscan[2648] PV /dev/sde not used.
       
      [root@virt-555 ~]# pvscan
        WARNING: Couldn't find device with uuid OpQj9s-jHjM-Wn8a-10sm-TFr5-vfxa-5sBQ4Y.
        WARNING: VG test is missing PV OpQj9s-jHjM-Wn8a-10sm-TFr5-vfxa-5sBQ4Y (last written to /dev/sdc).
        PV /dev/sda   VG test   lvm2 [<40.00 GiB / 38.99 GiB free]
        PV /dev/sdb   VG test   lvm2 [<40.00 GiB / 38.99 GiB free]
        PV [unknown]  VG test   lvm2 [<40.00 GiB / 38.89 GiB free]
        PV /dev/sdd   VG test   lvm2 [<40.00 GiB / <40.00 GiB free]
        PV /dev/sde             lvm2 [40.00 GiB]
        Total: 5 [199.98 GiB] / in use: 4 [159.98 GiB] / in no VG: 1 [40.00 GiB]
       
      [root@virt-555 ~]# lvs -a -o +devices,segtype
        WARNING: Couldn't find device with uuid OpQj9s-jHjM-Wn8a-10sm-TFr5-vfxa-5sBQ4Y.
        WARNING: VG test is missing PV OpQj9s-jHjM-Wn8a-10sm-TFr5-vfxa-5sBQ4Y (last written to /dev/sdc).
        LV                   VG   Attr       LSize   Pool Origin    Data%  Meta%  Move Log Cpy%Sync Convert Devices                                                           Type  
        snap1                test swi-a-s-p- 100.00m      test_raid 0.00                                    [unknown](257)                                                    linear
        test_raid            test owi-aor-p-   1.00g                                       100.00           test_raid_rimage_0(0),test_raid_rimage_1(0),test_raid_rimage_2(0) raid1 
        [test_raid_rimage_0] test iwi-aor---   1.00g                                                        /dev/sda(1)                                                       linear
        [test_raid_rimage_1] test iwi-aor---   1.00g                                                        /dev/sdb(1)                                                       linear
        [test_raid_rimage_2] test iwi-aor-p-   1.00g                                                        [unknown](1)                                                      linear
        [test_raid_rmeta_0]  test ewi-aor---   4.00m                                                        /dev/sda(0)                                                       linear
        [test_raid_rmeta_1]  test ewi-aor---   4.00m                                                        /dev/sdb(0)                                                       linear
        [test_raid_rmeta_2]  test ewi-aor-p-   4.00m                                                        [unknown](0)                                                      linear
       
       
      [root@virt-555 ~]# vgreduce --removemissing --force test
        WARNING: Couldn't find device with uuid OpQj9s-jHjM-Wn8a-10sm-TFr5-vfxa-5sBQ4Y.
        WARNING: VG test is missing PV OpQj9s-jHjM-Wn8a-10sm-TFr5-vfxa-5sBQ4Y (last written to [unknown]).
        WARNING: Couldn't find device with uuid OpQj9s-jHjM-Wn8a-10sm-TFr5-vfxa-5sBQ4Y.
        WARNING: Couldn't find device with uuid OpQj9s-jHjM-Wn8a-10sm-TFr5-vfxa-5sBQ4Y.
        WARNING: Monitoring test/snap1 failed.
        WARNING: Monitoring test/test_raid failed.
        WARNING: Couldn't find device with uuid OpQj9s-jHjM-Wn8a-10sm-TFr5-vfxa-5sBQ4Y.
       
      [Looping for hours...]
       
        WARNING: Couldn't find device with uuid OpQj9s-jHjM-Wn8a-10sm-TFr5-vfxa-5sBQ4Y.
        WARNING: Couldn't find device with uuid OpQj9s-jHjM-Wn8a-10sm-TFr5-vfxa-5sBQ4Y.
        WARNING: Couldn't find device with uuid OpQj9s-jHjM-Wn8a-10sm-TFr5-vfxa-5sBQ4Y.
      

              mcsontos@redhat.com Marian Csontos
              cmarthal@redhat.com Corey Marthaler
              Peter Rajnoha Peter Rajnoha
              Cluster QE Cluster QE
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                Created:
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