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Asked: 2014-05-02 09:14:55 +0800 CST

LVM: Duplicate VG name VolGroup00

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I'm on a server that shows a duplicate VG name. How can I rename one of these VolGroups to get rid of this conflict?

[root@dev-server dev]# lvs
  WARNING: Duplicate VG name VolGroup00: zOuHvA-QTBR-wNPs-3GIQ-b2zQ-yOeH-2fBS87 (created here) takes precedence over ifDUDd-ePmZ-Er7H-xwst-70dY-hB3M-6YDNZc
  WARNING: Duplicate VG name VolGroup00: Existing zOuHvA-QTBR-wNPs-3GIQ-b2zQ-yOeH-2fBS87 (created here) takes precedence over ifDUDd-ePmZ-Er7H-xwst-70dY-hB3M-6YDNZc
  LV       VG         Attr   LSize   Origin Snap%  Move Log Copy%  Convert
  LogVol00 VolGroup00 -wi-ao  30.00G
  LogVol01 VolGroup00 -wi-ao 127.91G
  backup   VolGroup00 -wi-ao 300.00G
  rman     VolGroup00 -wi-ao 300.00G
[root@dev-server dev]# pvs
  WARNING: Duplicate VG name VolGroup00: zOuHvA-QTBR-wNPs-3GIQ-b2zQ-yOeH-2fBS87 (created here) takes precedence over ifDUDd-ePmZ-Er7H-xwst-70dY-hB3M-6YDNZc
  WARNING: Duplicate VG name VolGroup00: Existing zOuHvA-QTBR-wNPs-3GIQ-b2zQ-yOeH-2fBS87 (created here) takes precedence over ifDUDd-ePmZ-Er7H-xwst-70dY-hB3M-6YDNZc
  WARNING: Duplicate VG name VolGroup00: Existing zOuHvA-QTBR-wNPs-3GIQ-b2zQ-yOeH-2fBS87 (created here) takes precedence over ifDUDd-ePmZ-Er7H-xwst-70dY-hB3M-6YDNZc
  PV                  VG         Fmt  Attr PSize   PFree
  /dev/cciss/c0d0p2   VolGroup00 lvm2 a--    1.64T 918.62G
  /dev/cciss/c0d1p1   VolGroup00 lvm2 a--    3.27T   3.27T
  /dev/mpath/mpath0p2 VolGroup00 lvm2 a--  405.88G      0

 vgdisplay
  WARNING: Duplicate VG name VolGroup00: zOuHvA-QTBR-wNPs-3GIQ-b2zQ-yOeH-2fBS87 (created here) takes precedence over ifDUDd-ePmZ-Er7H-xwst-70dY-hB3M-6YDNZc
  WARNING: Duplicate VG name VolGroup00: Existing zOuHvA-QTBR-wNPs-3GIQ-b2zQ-yOeH-2fBS87 (created here) takes precedence over ifDUDd-ePmZ-Er7H-xwst-70dY-hB3M-6YDNZc
  WARNING: Duplicate VG name VolGroup00: Existing zOuHvA-QTBR-wNPs-3GIQ-b2zQ-yOeH-2fBS87 (created here) takes precedence over ifDUDd-ePmZ-Er7H-xwst-70dY-hB3M-6YDNZc
  --- Volume group ---
  VG Name               VolGroup00
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  3
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               405.88 GB
  PE Size               32.00 MB
  Total PE              12988
  Alloc PE / Size       12988 / 405.88 GB
  Free  PE / Size       0 / 0
  VG UUID               ifDUDd-ePmZ-Er7H-xwst-70dY-hB3M-6YDNZc

  --- Volume group ---
  VG Name               VolGroup00
  System ID
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  9
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                4
  Open LV               4
  Max PV                0
  Cur PV                2
  Act PV                2
  VG Size               4.91 TB
  PE Size               32.00 MB
  Total PE              160955
  Alloc PE / Size       24253 / 757.91 GB
  Free  PE / Size       136702 / 4.17 TB
  VG UUID               zOuHvA-QTBR-wNPs-3GIQ-b2zQ-yOeH-2fBS87

My quick attempt to re-name the VolGroup (could be doing this wrong...):

[root@dev-server dev]# vgrename /dev/cciss/c0d1 /dev/VolGroup02
      WARNING: Duplicate VG name VolGroup00: zOuHvA-QTBR-wNPs-3GIQ-b2zQ-yOeH-2fBS87 (created here) takes precedence over ifDUDd-ePmZ-Er7H-xwst-70dY-hB3M-6YDNZc
      WARNING: Duplicate VG name VolGroup00: Existing zOuHvA-QTBR-wNPs-3GIQ-b2zQ-yOeH-2fBS87 (created here) takes precedence over ifDUDd-ePmZ-Er7H-xwst-70dY-hB3M-6YDNZc
      Volume group name cciss/c0d1 has invalid characters
    [root@dev-server dev]#

Output of df -h:

Filesystem            Size  Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00
                       30G   17G   12G  59% / /dev/cciss/c0d0p1      99M   30M   65M  32% /boot tmpfs                  63G     0   63G   0% /dev/shm /dev/mapper/VolGroup00-rman
                      296G  8.9G  272G   4% /rman/11g /dev/mapper/VolGroup00-backup
                      296G   34G  248G  12% /backup
redhat

2 Answers

  1. Best Answer

    From the man page:-

    "vgrename Zvlifi-Ep3t-e0Ng-U42h-o0ye-KHu1-nl7Ns4 VolGroup00_tmp"
   changes  the name of the Volume Group with UUID Zvlifi-Ep3t-e0Ng-U42h-o0ye-KHu1-nl7Ns4 to "VolGroup00_tmp".

    ...so for your case:-

    vgrename zOuHvA-QTBR-wNPs-3GIQ-b2zQ-yOeH-2fBS87 newvolgroupname

    ...will rename the volume group with ID zOuHvA-QTBR-wNPs-3GIQ-b2zQ-yOeH-2fBS87 to newvolgroupname.

    • 11

  2. Name

    vgrename - rename a volume group Synopsis

    vgrename [-A|--autobackup {y|n}] [-d|--debug] [-h|-?|--help] [-t|--test] [-v|--verbose] OldVolumeGroup{Path|Name|UUID} NewVolumeGroup{Path|Name} Description

    vgrename renames an existing (see vgcreate(8)) volume group from OldVolumeGroup{Name|Path|UUID} to NewVolumeGroup{Name|Path}. All the Volume Groups visible to a system need to have different names. Otherwise many LVM2 commands will refuse to run or give warning messages.

    This situation could arise when disks are moved between machines. If a disk is connected and it contains a Volume Group with the same name as the Volume Group containing your root filesystem the machine might not even boot correctly. However, the two Volume Groups should have different UUIDs (unless the disk was cloned) so you can rename one of the conflicting Volume Groups with vgrename.

    Options

    See lvm(8) for common options. Examples

    Renames existing volume group vg02 to my_volume_group: vgrename /dev/vg02 /dev/my_volume_group

    or

    vgrename

    vg02 my_volume_group

    Changes the name of the Volume Group with UUID Zvlifi-Ep3t-e0Ng-U42h-o0ye-KHu1-nl7Ns4 to VolGroup00_tmp:

    vgrename Zvlifi-Ep3t-e0Ng-U42h-o0ye-KHu1-nl7Ns4

    VolGroup00_tmp

    Link: http://linux.die.net/man/8/vgrename

    ... as for

      Volume group name cciss/c0d1 has invalid characters

    /dev/cciss/c0d1 is not a VG, so you cannot rename it. This is a PV on which a VG is probably based.

    • 2