Step By Step
- Make a backup of the ECX Server, preferably a clone, before proceeding with the steps below.
- The root file system resides on Disk1. In the vSphere console, expand Disk1.
- Open a command line session to the ECX Server and log in as root:
Follow the commands below. In the example below the root partition is expanded from 25Gb to 35GB. - Since disk1 was expanded, rescan the SCSI disk.
[root@ CXW_ECX ~]# scsi_device]# ls
The SCSI disk we will need to rescan is 2:0:0:0 as this is for Disk1.
[root@CXW_ECX ~]# echo 1 > /sys/class/scsi_device/2\:0\:0\:0/device/rescan
List the Partition Table for /dev/sda as this is the file system for the root partition.
[root@CXW_ECX ~]# fdisk -l /dev/sda
Disk /dev/sda: 53.7 GB, 53687091200 bytes
255 heads, 63 sectors/track, 6527 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: 0x00099713
Device Boot Start End Blocks Id System
/dev/sda1 * 1 33 262144 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 33 2073 16384000 82 Linux swap / Solaris
/dev/sda3 2073 5221 25290514+ 83 Linux
As per the output above, you will only be working on partition 3, /dev/sda3, which is the root file system.
- Extend partition 3 to the new allocated blocks. First delete the partition, then re-create it.
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): p
Disk /dev/sda: 53.7 GB, 53687091200 bytes
255 heads, 63 sectors/track, 6527 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: 0x00099713
Device Boot Start End Blocks Id System
/dev/sda1 * 1 33 262144 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 33 2073 16384000 82 Linux swap / Solaris
/dev/sda3 2073 5221 25290514+ 83 Linux
Command (m for help): d
Partition number (1-4): 3
Command (m for help): p
Disk /dev/sda: 53.7 GB, 53687091200 bytes
255 heads, 63 sectors/track, 6527 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: 0x00099713
Device Boot Start End Blocks Id System
/dev/sda1 * 1 33 262144 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 33 2073 16384000 82 Linux swap / Solaris
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 3
First cylinder (2073-6527, default 2073): Keep blank, press enter.
Using default value 2073
Last cylinder, +cylinders or +size{K,M,G} (2073-6527, default 6527): Keep blank, press enter.
Using default value 6527
Command (m for help): p
Disk /dev/sda: 53.7 GB, 53687091200 bytes
255 heads, 63 sectors/track, 6527 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: 0x00099713
Device Boot Start End Blocks Id System
/dev/sda1 * 1 33 262144 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 33 2073 16384000 82 Linux swap / Solaris
/dev/sda3 2073 6527 35780959+ 83 Linux
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: 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)
Syncing disks.
- Reboot the ECX server.
After rebooting the server type the command below.
Enter the command below to view the new size of the partition:
df -h