logical volume remove Post: 302348235

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Operating Systems Linux Red Hat logical volume remove Post 302348235 by Radar on Thursday 27th of August 2009 05:54:58 PM

08-27-2009

Registered User

Hopefully this illustrates how it should go

Code:

[root@F10 ~]# vgdisplay Beatles
  --- Volume group ---
  VG Name               Beatles
  System ID            
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  5
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                4
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               2.00 GB
  PE Size               4.00 MB
  Total PE              511
  Alloc PE / Size       511 / 2.00 GB
  Free  PE / Size       0 / 0  
  VG UUID               ZEama4-bjx6-DUnz-xEAR-Zcir-YM1L-pHvZHp
  
[root@F10 ~]# lvdisplay Beatles
  --- Logical volume ---
  LV Name                /dev/Beatles/John
  VG Name                Beatles
  LV UUID                HeNEwB-HYTo-ke3G-bNYJ-W2Xu-JNze-yaZ9tE
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                512.00 MB
  Current LE             128
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:2
  
  --- Logical volume ---
  LV Name                /dev/Beatles/Paul
  VG Name                Beatles
  LV UUID                toWU48-FghQ-WkBy-mPxH-s9bP-ORpF-Xh6XZ7
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                512.00 MB
  Current LE             128
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:3
  
  --- Logical volume ---
  LV Name                /dev/Beatles/George
  VG Name                Beatles
  LV UUID                iZivOZ-ZBoo-vSG6-1Lvn-7FcC-RAPx-GJe5mR
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                512.00 MB
  Current LE             128
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:4
  
  --- Logical volume ---
  LV Name                /dev/Beatles/Ringo
  VG Name                Beatles
  LV UUID                ClIOwj-P1n0-i6MB-F4aS-CSlK-puUZ-ZAp0fn
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                508.00 MB
  Current LE             127
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:5

[root@F10 ~]# lvremove /dev/Beatles/John
Do you really want to remove active logical volume "John"? [y/n]: y
  Logical volume "John" successfully removed

[root@F10 ~]# vgdisplay Beatles
  --- Volume group ---
  VG Name               Beatles
  System ID            
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  6
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                3
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               2.00 GB
  PE Size               4.00 MB
  Total PE              511
  Alloc PE / Size       383 / 1.50 GB
  Free  PE / Size       128 / 512.00 MB
  VG UUID               ZEama4-bjx6-DUnz-xEAR-Zcir-YM1L-pHvZHp

There's enough room now for a new Beatles member.

Radar

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LEARN ABOUT MOJAVE

vgreduce

VGREDUCE(8)                                                   System Manager's Manual                                                  VGREDUCE(8)

NAME

       vgreduce - reduce a volume group

SYNOPSIS

       vgreduce  [-a|--all] [-A|--autobackup y|n] [-d|--debug] [-h|-?|--help] [--removemissing] [-t|--test] [-v|--verbose] VolumeGroupName [Physi-
       calVolumePath...]

DESCRIPTION

       vgreduce allows you to remove one or more unused physical volumes from a volume group.

OPTIONS

       See lvm for common options.

       -a, --all
              Removes all empty physical volumes if none are given on command line.

       --removemissing
              Removes all missing physical volumes from the volume group, if there are no logical volumes allocated on those. This resumes  normal
              operation of the volume group (new logical volumes may again be created, changed and so on).

              If this is not possible (there are logical volumes referencing the missing physical volumes) and you cannot or do not want to remove
              them manually, you can run this option with --force to have vgreduce remove any partial LVs.

              Any logical volumes and dependent snapshots that were partly on the missing disks get removed completely. This includes those  parts
              that lie on disks that are still present.

              If your logical volumes spanned several disks including the ones that are lost, you might want to try to salvage data first by acti-
              vating your logical volumes with --partial as described in lvm (8).

SEE ALSO

       lvm(8), vgextend(8)

Sistina Software UK                                      LVM TOOLS 2.02.95(2) (2012-03-06)                                             VGREDUCE(8)