Resize EC2 file system with lvm
On an EC2 server with an LVM file system, I need to increase the size of the / partition. First, increase the size of the volume in the Amazon AWS console as per Resize Amazon EC2 Boot Disk, once volume size is increased, you need to resize your filesystem.
[root@sok ~]# df -h Filesystem Size Used Avail Use% Mounted on devtmpfs 3.8G 0 3.8G 0% /dev tmpfs 3.8G 0 3.8G 0% /dev/shm tmpfs 3.8G 17M 3.8G 1% /run tmpfs 3.8G 0 3.8G 0% /sys/fs/cgroup /dev/mapper/cl-root 38G 33G 5.1G 87% / /dev/nvme0n1p1 1014M 412M 603M 41% /boot tmpfs 775M 0 775M 0% /run/user/0 [root@sok ~]#
Here is result of parted -l
[root@sok ~]# parted -l Model: Linux device-mapper (linear) (dm) Disk /dev/mapper/cl-swap: 1074MB Sector size (logical/physical): 512B/512B Partition Table: loop Disk Flags: Number Start End Size File system Flags 1 0.00B 1074MB 1074MB linux-swap(v1) Model: Linux device-mapper (linear) (dm) Disk /dev/mapper/cl-root: 40.7GB Sector size (logical/physical): 512B/512B Partition Table: loop Disk Flags: Number Start End Size File system Flags 1 0.00B 40.7GB 40.7GB xfs Model: NVMe Device (nvme) Disk /dev/nvme0n1: 172GB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start End Size Type File system Flags 1 1049kB 1075MB 1074MB primary xfs boot 2 1075MB 10.7GB 9663MB primary lvm 3 10.7GB 16.1GB 5369MB primary lvm 4 16.1GB 42.9GB 26.8GB primary lvm [root@sok ~]#
/dev/nvme0n1 was resized to 172 GB, but the 4th partition was only using 26 GB.
Resize the 4th partition with the command “growpart /dev/nvme0n1 4”
[root@sok ~]# growpart /dev/nvme0n1 4 CHANGED: partition=4 start=31457280 old: size=52428800 end=83886080 new: size=304087007 end=335544287 [root@sok ~]# parted /dev/nvme0n1 print Model: NVMe Device (nvme) Disk /dev/nvme0n1: 172GB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start End Size Type File system Flags 1 1049kB 1075MB 1074MB primary xfs boot 2 1075MB 10.7GB 9663MB primary lvm 3 10.7GB 16.1GB 5369MB primary lvm 4 16.1GB 172GB 156GB primary lvm [root@sok ~]#
Resize physical volume with “pvresize /dev/nvme0n1p4” command.
[root@sok ~]# pvresize /dev/nvme0n1p4 Physical volume "/dev/nvme0n1p4" changed 1 physical volume(s) resized or updated / 0 physical volume(s) not resized [root@sok ~]#
Finally resize logical volume with the command “lvextend -r -l +100%FREE /dev/mapper/cl-root”. -r option resize the file system also.
[root@sok ~]# lvextend -r -l +100%FREE /dev/mapper/cl-root
Size of logical volume cl/root changed from 37.90 GiB (9703 extents) to <157.99 GiB (40445 extents).
Logical volume cl/root successfully resized.
meta-data=/dev/mapper/cl-root isize=512 agcount=19, agsize=524032 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=9935872, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 9935872 to 41415680
[root@sok ~]#
Now the size of the / portion is increased to use full available disk space.
[root@sok ~]# df -h Filesystem Size Used Avail Use% Mounted on devtmpfs 3.8G 0 3.8G 0% /dev tmpfs 3.8G 0 3.8G 0% /dev/shm tmpfs 3.8G 17M 3.8G 1% /run tmpfs 3.8G 0 3.8G 0% /sys/fs/cgroup /dev/mapper/cl-root 158G 33G 126G 21% / /dev/nvme0n1p1 1014M 412M 603M 41% /boot tmpfs 775M 0 775M 0% /run/user/0 [root@sok ~]#