Extend disk for CentOS in XenServer

I'm not sure how to handle this, as I don't really deal much with Linux, however we have a CentOS server built on XenServer and I need to add another 60 GB disk space to it - extend the volume.
Once I add the disk to the VM, how do I add this to the actual CentOS server itself? Are there tools within the OS itself to extend the volume?
Many thanks in advance for your help.
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Seth SimmonsSr. Systems AdministratorCommented:
Are there tools within the OS itself to extend the volume?

yes you can extend natively
are you using  LVM?  not sure?  what is the output of df -h ?
If you aren't using LVM, you'll need to run a gparted Live Disc to repartition the expanded disk.  If you have LVM, then it's relatively quick and easy with LVM tools.
Seth SimmonsSr. Systems AdministratorCommented:
not necessarily
if the added space is right after the partition to be extended then it can be done with tune2fs

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Yes, I see a lot of volumes with swap set after / (root), so I have to run gparted.
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