FCTaylor
Contributor
Contributor

Reducing partition size of a hard disk

I created a new VM using an OVF and during that process I increated the partition size of the disk from 125GB to 400GB thin provisioned. Once the CentOS Linux system booted up it only recognized the original disk space. The vendor indicated they wanted a seperate disk for the data so I created another hard drive with 500GB of space but I would like to reclaim the unused portion of the original disk. I tired to shut down the guest and set the partition size in vSphere but it seems to only allow you to increase the size not decrease the size. I also thought there was a command line that would do it but I cannot seem to find it now. My other option is to use  vCenter Converter and see if it would let me resize the hard disk.

Does anyone have a good way of resizing a thin provisioned hard disk.

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3 Replies
admin
Immortal
Immortal

Hello,

you could use the vmksftools -i to reduce the size of the disk, But its not safe practice. using the VMware converter would be the best option and you could shrink the vmdk at the destination and its pretty safe.

Thanks,
Avinash

FCTaylor
Contributor
Contributor

In looking through some of the other discussions it looks like the VMware converter is the way to go. I will let you know if that works.

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admin
Immortal
Immortal

Links of the KB article’s which would help you to increase the performance of the converter and speed up the process.

http://kb.vmware.com/kb/1004588

http://kb.vmware.com/kb/2020517

Thanks,
Avinash

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