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who creates 'dev/mapper/vgHDB-HDB9'?


I have installed lvm2 and created pv's, vg's and lv's. E.g.:

root@Debian:/home/hugo# lvdisplay
  --- Logical volume ---
  LV Name                /dev/vgHDB/HDB3
  VG Name                vgHDB
  LV UUID                SCHlBs-acvc-FLzz-TgwV-0IGX-aXBM-AdbPsB
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                12.00 GiB
  Current LE             3072
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           254:1


and blkid says:

/dev/mapper/vgHDB-HDB3: LABEL="HD502HJ.03" UUID="b12819b7-8f07-4bf6-af66-9bb9410536a1" TYPE="ext2" /dev/mapper/vgHDB-HDB7: LABEL="HD502HJ.07" UUID="c889aa6c-e0c3-4954-b8fe-b87d257c1cc6" TYPE="ext2" /dev/mapper/vgHDB-HDB5: LABEL="HD502HJ.05" UUID="18027b86-2b1f-4e24-ab5a-eb56ba0509c9" TYPE="ext2" /dev/mapper/vgHDB-HDB6: LABEL="HD502HJ.06" UUID="238dd5dc-012f-46e1-b680-84dbe9287d2b" TYPE="ext2" /dev/mapper/vgHDB-HDBB: LABEL="HD502HJ.0B" UUID="d7bc3d22-238a-47d4-86c8-6aa3384404e5" TYPE="ext2"

I have a question: who creates exactly those /dev/ entries?

The reason I ask is that sometimes with mondorescue they are not created and I cnnot access the lv's.


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