Im tasked to resize a partition on a remote server. I've read up on it and understand that i'll need unmount and use resize2fs /dev/sda
to expand the partition size. Can someone please help me unmount the partition or direct me to a guide to achieve this, details of the setup:
UPDATE, the disk space is now 200gb but still need help to expand the partition to its full size
fdisk -l
outputs
Disk /dev/sda: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00080e9a
Device Boot Start End Blocks Id System
/dev/sda1 * 1 64 512000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 64 2611 20458496 8e Linux LVM
Disk /dev/mapper/vg_livecd-lv_root: 18.8 GB, 18832424960 bytes
255 heads, 63 sectors/track, 2289 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/mapper/vg_livecd-lv_root doesn't contain a valid partition table
Disk /dev/mapper/vg_livecd-lv_swap: 2113 MB, 2113929216 bytes
255 heads, 63 sectors/track, 257 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/mapper/vg_livecd-lv_swap doesn't contain a valid partition table
and
df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_livecd-lv_root
18G 2.8G 15G 17% /
tmpfs 1004M 0 1004M 0% /dev/shm
/dev/sda1 485M 33M 427M 8% /boot
Best Answer
in most cases you can resize your filesystem online, there is no need to umount it.
it looks like you are using LVM so in high level your steps are: