How can I extend disk space (logical and physical) on Ubuntu 14.04?
61,397
Try these steps:
- To check if you have some free space:
sudo parted
- Then run
cfdisk
to create a new partition (primary or logical), so choosewrite
and then restart your server - Check your new partition:
fdisk -l /dev/sda
- We suppose that your new partition is
sda3
, so create the physical volume:pvcreate /dev/sda3
pvdisplay
to show the physical volumesvgextend YOUR_VOLUME_GROUP /dev/sda3
then if you want check itlvdisplay
lvextend -l+100%FREE /dev/YOUR_VOLUME_GROUP/root
resize2fs /dev/mapper/YOUR_VOLUME_GROUP-root
finally check you new space: df -h
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Comments
-
PaolaG over 1 year
I have a Linux Virtual Machine Server with Ubuntu 14.04, without free space, and I want to extend my disk.
$ df -h File system Dim. Usati Dispon. Uso% Montato su /dev/root 21G 20G 1,3M 100% / none 4,0K 0 4,0K 0% /sys/fs/cgroup udev 2,0G 4,0K 2,0G 1% /dev tmpfs 396M 924K 395M 1% /run none 5,0M 0 5,0M 0% /run/lock none 2,0G 0 2,0G 0% /run/shm none 100M 0 100M 0% /run/user /dev/sda1 236M 39M 185M 18% /boot
I added 15Gb to physical disk, but I cannot add to logical volume.
With
parted
I can see the free space:Modello: VMware Virtual disk (scsi) Disco /dev/sda: 37,6GB Dimensione del settore (logica/fisica): 512B/512B Tabella delle partizioni: msdos Numero Inizio Fine Dimensione Tipo File system Flag 32,3kB 1049kB 1016kB Free space 1 1049kB 256MB 255MB primary ext2 boot 256MB 257MB 1048kB Free space 2 257MB 26,8GB 26,6GB extended 5 257MB 26,8GB 26,6GB logical lvm 26,8GB 37,6GB 10,7GB Free space
Output of
lsblk
command:NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 35G 0 disk ├─sda1 8:1 0 243M 0 part /boot ├─sda2 8:2 0 1K 0 part └─sda5 8:5 0 24,8G 0 part ├─--vg-root (dm-0) 252:0 0 20,8G 0 lvm / └─vg-swap_1 (dm-1) 252:1 0 4G 0 lvm [SWAP] sr0 11:0 1 1024M 0 rom
To extend the virtual disk I try this way:
$ sudo lvextend -L+10G /dev/root Extending logical volume root to 30,76 GiB Insufficient free space: 2560 extents needed, but only 0 available
I think that the problem is to see the unmount free space added.
What's wrong?
-
ISparkes about 6 yearsOn step 2, you can also detect the new partition without restart using "partprobe /dev/sda". Helped me out when wolves were at the door... ;)
-
pacoverflow about 4 yearsOn RHEL Atomic, steps 1-7 are the same, but step 8 resulted in a
Bad magic number in super-block
error - had to doxfs_growfs /dev/YOUR_VOLUME_GROUP/root
instead.