LVM2                                                
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  4/20/20   LVM2    
                                                   
   
  Home https://serverfault.com/questions/461385/how-to-find-the-physical-volumes-that-hold-a-logical-volume-in-lvm
  Install / Fedora
  cronjobs lsblk [root@T30-67 log]# lsblk $ lsblk
  Info (inxi) NAME            MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT NAME                     MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
  Desktops sda               8:0    0 931.5G  0 disk sda                        8:0    0 223,6G  0 disk 
  dnf ├─sda1            8:1    0     1G  0 part /boot ├─sda1                     8:1    0   350M  0 part 
  DNS └─sda2            8:2    0 930.5G  0 part ├─sda2                     8:2    0    29G  0 part 
  firewalld   ├─fedora-root 253:0    0    15G  0 lvm  / ├─sda3                     8:3    0   488M  0 part /boot
  LVM   └─fedora-swap 253:1    0   7.8G  0 lvm  [SWAP] ├─sda4                     8:4    0     1K  0 part 
  LVM2 sr0              11:0    1  1024M  0 rom └─sda5                     8:5    0 193,8G  0 part 
  N.Neighbor'd   ├─vg_ssd-lv_root_solid 254:0    0  13,3G  0 lvm  /
  NM   ├─vg_ssd-lv_srv_solid  254:2    0  46,6G  0 lvm  /srv
  Wireless   └─vg_ssd-lv_home_solid 254:3    0   107G  0 lvm  /home
  Services sdb                        8:16   0  74,5G  0 disk 
  Sys Jour └─sdb1                     8:17   0  74,5G  0 part 
      ├─vg_ssd-lv_swap_solid 254:1    0   3,7G  0 lvm  [SWAP]
      └─vg_ssd-lv_videos     254:4    0    28G  0 lvm  /mnt/videos
     
   
    pvs, vgs, lvs Summary LVM tools exmples
   
    pvs [root@T30-67 log]# pvs List the physical segments used by a logical volume :
      PV         VG     Fmt  Attr PSize    PFree $ lvs --segments /dev/vg_ssd/lv_videos  
      /dev/sda2  fedora lvm2 a--  <930.51g 907.72g LV        VG     Attr       #Str Type   SSize 
    lv_videos vg_ssd -wi-ao----    1 linear 20,95g
    vgs [root@T30-67 log]# vgs lv_videos vg_ssd -wi-ao----    1 linear  7,05g
      VG     #PV #LV #SN Attr   VSize    VFree
      fedora   1   2   0 wz--n- <930.51g 907.72g same with more details:
    $ lvs --segments /dev/vg_ssd/lv_videos -o +lv_size,devices  
    lvs [root@T30-67 log]# lvs   LV        VG     Attr       #Str Type   SSize  LSize  Devices         
      LV   VG     Attr       LSize  Pool Origin Data%     lv_videos vg_ssd -wi-ao----    1 linear 20,95g 28,00g /dev/sdb1(12729)
      root fedora -wi-ao---- 15.00g   lv_videos vg_ssd -wi-ao----    1 linear  7,05g 28,00g /dev/sdb1(3534) 
      swap fedora -wi-ao---- <7.79g
    List the physical extents of a given LV. Useful to move those segments (using pvmove):
    $ lvs  /dev/vg_ssd/lv_videos -o seg_pe_ranges
    pvdisplay, vgdisplay, lvdisplay Details     PE Ranges      
      /dev/sdb1:12729-18090    
    pvdisplay [root@T30-67 /]# pvdisplay   /dev/sdb1:3534-5339      
      --- Physical volume ---
      PV Name               /dev/sda2 The opposite way, list the logical volume (segments) inside a given Physical Volume:
      VG Name               fedora $ pvs  /dev/sdb1  --segments  -o +lv_name,lv_size      
      PV Size               930.51 GiB / not usable 4.00 MiB   PV         VG     Fmt  Attr PSize  PFree  Start SSize LV            LSize 
      Allocatable           yes   /dev/sdb1  vg_ssd lvm2 a--  74,53g 22,80g     0  3534                   0 
      PE Size               4.00 MiB   /dev/sdb1  vg_ssd lvm2 a--  74,53g 22,80g  3534  1806 lv_videos     28,00g
      Total PE              238210   /dev/sdb1  vg_ssd lvm2 a--  74,53g 22,80g  5340  1316                   0 
      Free PE               232377   /dev/sdb1  vg_ssd lvm2 a--  74,53g 22,80g 11776   953 lv_swap_solid  3,72g
      Allocated PE          5833   /dev/sdb1  vg_ssd lvm2 a--  74,53g 22,80g 12729  5362 lv_videos     28,00g
      PV UUID               DPteBz-Qm4c-rXqW-GJoM-hNA1-   /dev/sdb1  vg_ssd lvm2 a--  74,53g 22,80g 18091   988                   0 
   
    vgdisplay [root@T30-67 /]# vgdisplay List the physical segments of a given logical volume, among other information:
      --- Volume group --- $ lvdisplay -m /dev/vg_ssd/lv_videos
      VG Name               fedora [..]        
      System ID   --- Segments ---    
      Format                lvm2   Logical extents 0 to 5361:  
      Metadata Areas        1     Type        linear    
      Metadata Sequence No  3     Physical volume /dev/sdb1  
      VG Access             read/write     Physical extents    12729 to 18090
      VG Status             resizable          
      MAX LV                0   Logical extents 5362 to 7167:  
      Cur LV                2     Type        linear    
      Open LV               2     Physical volume /dev/sdb1  
      Max PV                0     Physical extents    3534 to 5339
      Cur PV                1
      Act PV                1 Display the Logical volume associated with a given physical volume , among other information:
      VG Size               <930.51 GiB $ pvdisplay -m /dev/sdb1      
      PE Size               4.00 MiB [..]          
      Total PE              238210   --- Physical Segments ---    
      Alloc PE / Size       5833 / <22.79 GiB   Physical extent 0 to 3533:    
      Free  PE / Size       232377 / 907.72 GiB     FREE          
      VG UUID               ZkkHVa-wPfR-vrcO-ELzH-jSKz-   Physical extent 0 to 5339:    
        Logical volume  /dev/vg_ssd/lv_videos  
    lvdisplay [root@T30-67 /]# lvdisplay     Logical extents 5362 to 7167    
      --- Logical volume ---   Physical extent 5340 to 11775:    
      LV Path                /dev/fedora/swap     FREE          
      LV Name                swap   Physical extent 11776 to 12728:    
      VG Name                fedora     Logical volume  /dev/vg_ssd/lv_swap_solid  
      LV UUID                Gu7Hgt-xNPs-bykh-50lq-hues-     Logical extents 0 to 952    
      LV Write Access        read/write   Physical extent 12729 to 18090:    
      LV Creation host, time T30-67, 2019-02-12 11:39:54      Logical volume  /dev/vg_ssd/lv_videos  
      LV Status              available     Logical extents 0 to 5361    
      # open                 2   Physical extent 18091 to 19078:    
      LV Size                <7.79 GiB     FREE          
      Current LE             1993
      Segments               1 Complex command, but full list :
      Allocation             inherit $ pvs   --segments  -o pv_name,pv_size,seg_size,vg_name,lv_name,lv_size,seg_pe_ranges
      Read ahead sectors     auto   PV         PSize   SSize   VG     LV            LSize   PE Ranges              
      - currently set to     256   /dev/sda5  193,79g   9,31g vg_ssd lv_root_solid  13,31g /dev/sda5:0-2383       
      Block device           253:1   /dev/sda5  193,79g   3,72g vg_ssd lv_home_solid 107,00g /dev/sda5:2384-3336    
      /dev/sda5  193,79g  46,56g vg_ssd lv_srv_solid   46,56g /dev/sda5:3337-15256   
      --- Logical volume ---   /dev/sda5  193,79g  60,00g vg_ssd lv_home_solid 107,00g /dev/sda5:15257-30616  
      LV Path                /dev/fedora/root   /dev/sda5  193,79g 200,00m vg_ssd lv_home_solid 107,00g /dev/sda5:30617-30666  
      LV Name                root   /dev/sda5  193,79g   1,05g vg_ssd                    0                         
      VG Name                fedora   /dev/sda5  193,79g   8,00g vg_ssd lv_home_solid 107,00g /dev/sda5:30937-32984  
      LV UUID                SqV0k1-9CuD-Tl62-rl1A-49qF-   /dev/sda5  193,79g   4,00g vg_ssd lv_root_solid  13,31g /dev/sda5:32985-34008  
      LV Write Access        read/write   /dev/sda5  193,79g  20,00g vg_ssd lv_home_solid 107,00g /dev/sda5:34009-39128  
      LV Creation host, time T30-67, 2019-02-12 11:39:54    /dev/sda5  193,79g   9,80g vg_ssd lv_home_solid 107,00g /dev/sda5:41689-44198  
      LV Status              available   /dev/sda5  193,79g   1,28g vg_ssd lv_home_solid 107,00g /dev/sda5:44199-44525  
      # open                 1   /dev/sda5  193,79g  15,86g vg_ssd                    0                         
      LV Size                15.00 GiB   /dev/sda5  193,79g   4,00g vg_ssd lv_home_solid 107,00g /dev/sda5:48587-49610  
      Current LE             3840   /dev/sdb1   74,53g  13,80g vg_ssd                    0                         
      Segments               1   /dev/sdb1   74,53g   7,05g vg_ssd lv_videos      28,00g /dev/sdb1:3534-5339    
      Allocation             inherit   /dev/sdb1   74,53g   5,14g vg_ssd                    0                         
      Read ahead sectors     auto   /dev/sdb1   74,53g   3,72g vg_ssd lv_swap_solid   3,72g /dev/sdb1:11776-12728  
      - currently set to     256   /dev/sdb1   74,53g  20,95g vg_ssd lv_videos      28,00g /dev/sdb1:12729-18090  
      Block device           253:0   /dev/sdb1   74,53g   3,86g vg_ssd                    0                         
   
   
    Examples
   
    lvresize -L 15G --resizefs MyVolGroup/mediavol Set the size of logical volume mediavol in MyVolGroup to 15 GiB and resize its file system all at once:
   
    lvresize -L 800G --resizefs fedora/root Set the size of logical volume root in fedora to 800 GiB and resize its file system all at once:
    lvresize -L +10G --resizefs fedora/root Extend the logical volume root in fedora by 10 GiB and resize its file system all at once:
   
    lvresize -l +100%FREE --resizefs emach69-vg/root If you want to fill all the free space on a volume group, use the following command:
   
   
    [root@T30-67 pictures]# df -h
    Filesystem               Size  Used Avail Use% Mounted on
    devtmpfs                 3.9G     0  3.9G   0% /dev
    tmpfs                    3.9G     0  3.9G   0% /dev/shm
    tmpfs                    3.9G  1.2M  3.9G   1% /run
    tmpfs                    3.9G     0  3.9G   0% /sys/fs/cgroup
      /dev/mapper/fedora-root  200G   98G  103G  49% /  
    tmpfs                    3.9G     0  3.9G   0% /tmp
    /dev/sda1                976M  164M  746M  18% /boot
    tmpfs                    785M     0  785M   0% /run/user/0
    tmpfs                    785M     0  785M   0% /run/user/1000