Infrastructre & Hardware

Enable LVM flag on partition using parted in Linux

Recently we have noticed some issue with one of our filesystem having issue and realized wrong flags on partition which was used as a Physical Volume (PV) in LVM (Logical Volume Management). You must properly set the lvm flag using any tool like fdisk or parted.

Open parted tool

[root@lpcl02c132 ~]# parted
GNU Parted 3.1
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted

Check the partitions and free space. We can see /dev/sda is already selected; otherwise you use the correct disk.

(parted) print free
Model: DELL PERC H730P Adp (scsi)
Disk /dev/sda: 600GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number  Start   End     Size    Type      File system  Flags
        32.3kB  1049kB  1016kB            Free Space
 1      1049kB  1075MB  1074MB  primary   xfs          boot
 2      1075MB  71.4GB  70.3GB  primary                lvm
 3      71.4GB  109GB   37.6GB  primary                lvm
 4      109GB   600GB   491GB   extended
 5      109GB   136GB   26.8GB  logical                lvm
 6      136GB   137GB   1078MB  logical                lvm
        137GB   600GB   463GB             Free Space

Create a partition with xfs format.

(parted) mkpart logical xfs 137GB 317G

Check current partions; you can see the partition 7 with 180GB size which we have created just now.

(parted) print free
Model: DELL PERC H730P Adp (scsi)
Disk /dev/sda: 600GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number  Start   End     Size    Type      File system  Flags
        32.3kB  1049kB  1016kB            Free Space
 1      1049kB  1075MB  1074MB  primary   xfs          boot
 2      1075MB  71.4GB  70.3GB  primary                lvm
 3      71.4GB  109GB   37.6GB  primary                lvm
 4      109GB   600GB   491GB   extended
 5      109GB   136GB   26.8GB  logical                lvm
 6      136GB   137GB   1078MB  logical                lvm
 7      137GB   317GB   180GB   logical
        317GB   600GB   283GB             Free Space

Enable lvm flag on partiton 7

(parted) set 7 lvm on

Verify lvm flags

(parted) print free
Model: DELL PERC H730P Adp (scsi)
Disk /dev/sda: 600GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number  Start   End     Size    Type      File system  Flags
        32.3kB  1049kB  1016kB            Free Space
 1      1049kB  1075MB  1074MB  primary   xfs          boot
 2      1075MB  71.4GB  70.3GB  primary                lvm
 3      71.4GB  109GB   37.6GB  primary                lvm
 4      109GB   600GB   491GB   extended
 5      109GB   136GB   26.8GB  logical                lvm
 6      136GB   137GB   1078MB  logical                lvm
 7      137GB   317GB   180GB   logical                lvm
        317GB   600GB   283GB             Free Space

That’s all.

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Tags: Enable LVM flag on partition using parted in Linux · fdisk · LINUX · logical volume management · lvm flag · parted

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