Let’s see in the example below how to increase an LVM partition, which is inside an Extended partition. In the example below, we will recreate the LVM partition, which must start from the same old sector, i.e. in our example the starting sector of our LVM is 501760, so the new resized partition must also start at sector 501760.
root@masterdaweb:~# fdisk -l
Disk /dev/sda: 800 GiB, 858993459200 bytes, 1677721600 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xac7783f0
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 499711 497664 243M 83 Linux
/dev/sda2 501758 83884031 83382274 39,8G 5 Extended
/dev/sda5 501760 83884031 83382272 39,8G 8e Linux LVM
Disk /dev/mapper/debian--vg-root: 38,1 GiB, 40907046912 bytes, 79896576 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/debian--vg-swap_1: 1,7 GiB, 1782579200 bytes, 3481600 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
root@masterdaweb:~# fdisk /dev/sda
Welcome to fdisk (util-linux 2.29.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): d
Partition number (1,2,5, default 5): 2
Partition 2 has been deleted.
Command (m for help): n
Partition type
p primary (1 primary, 0 extended, 3 free)
e extended (container for logical partitions)
Select (default p):
Using default response p.
Partition number (2-4, default 2): 2
First sector (499712-1677721599, default 499712): 501760
Last sector, +sectors or +size{K,M,G,T,P} (501760-1677721599, default 1677721599):
Created a new partition 2 of type 'Linux' and of size 799,8 GiB.
Partition #2 contains a LVM2_member signature.
Do you want to remove the signature? [Y]es/[N]o: N
Command (m for help): t
Partition number (1,2, default 2): 2
Partition type (type L to list all types): 8e
Changed type of partition 'Linux' to 'Linux LVM'.
Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Re-reading the partition table failed.: Device or resource busy
The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8).
root@masterdaweb:~# fdisk -l
Disk /dev/sda: 800 GiB, 858993459200 bytes, 1677721600 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xac7783f0
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 499711 497664 243M 83 Linux
/dev/sda2 501760 1677721599 1677219840 799,8G 8e Linux LVM
Disk /dev/mapper/debian--vg-root: 38,1 GiB, 40907046912 bytes, 79896576 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Then simply restart the machine so that the changes are applied, and then resize the Physical Volume of our LVM:
shutdown -r now
pvresize /dev/sda2
root@masterdaweb:~# pvdisplay --- Physical volume --- PV Name /dev/sda2 VG Name debian-vg PV Size 799,76 GiB / not usable 2,00 MiB Allocatable yes PE Size 4,00 MiB Total PE 204738 Free PE 194560 Allocated PE 10178 PV UUID k7gcJz-tKRI-WZb2-Dmdo-BpMn-qANT-y7PMYY
root@masterdaweb:~# vgdisplay --- Volume group --- VG Name debian-vg System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 5 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 1 Act PV 1 VG Size 799,76 GiB PE Size 4,00 MiB Total PE 204738 Alloc PE / Size 10178 / 39,76 GiB Free PE / Size 194560 / 760,00 GiB VG UUID kXiqf9-oqdT-szRX-fNd9-utWC-ZncD-DwDooI
- Tags:
- LVM
