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How to extend disk space?

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Operating Systems Linux Red Hat How to extend disk space?
# 1  
Old 07-23-2015
How to extend disk space?
Hi All,

I am working with a virtual machine of redhat and hard-disk is 100g in all, and the system free size is about 60g.
while the problem is when i run command: df -h, the root path seems already full. So i am wondering, is there any command i can work with to extend space for mounted volume /?
Code:
df -h 
-------------------------------------------------------------
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda3              16G   15G     0 100% /
tmpfs                 1.9G  124K  1.9G   1% /dev/shm
/dev/sda1             291M   36M  240M  14% /boot

Thank you all in advance.

Thanks,
Ivy
# 2  
Old 07-24-2015
You may be able to grow /dev/sda3 if you left unused disk space at the end of the /dev/sda3 partition.

A better option would be to rebuild your RHEL VM, use LVM and place /var on a separate logical volume and filesystem. With your current disk layout and filesystems, the root filesystem will always be prone to filling up.
# 3  
Old 07-24-2015
Any way to extend the root partition
Thank you for your reply.
I know your point, as the var is included in root partition. While, if i don't want to re-install my vm, if there anyway for me to extend the file system for root partition?

add result for fdisk:
--------------------------------------------------
Code:
fdisk -l

Disk /dev/sda: 107.4 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 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: 0x00053431

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          39      307200   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2              39         553     4128768   82  Linux swap / Solaris
Partition 2 does not end on cylinder boundary.
/dev/sda3             553        2611    16534528   83  Linux

Thanks a lot,
Ivy
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