[CentOS] Utility to zero unused blocks on disk
Greg Bailey
gbailey at lxpro.com
Mon Feb 8 22:11:28 UTC 2016
On 02/08/2016 03:05 PM, m.roth at 5-cent.us wrote:
> Wes James wrote:
>> Is there a utility to zero unused blocks on a disk?
>>
>> CentOS 6.7/Ext4
>>
>> I saw zerofree, but I’m not sure it would work on Ext4 or even work on
>> this version of CentOS.
>>
> I don't understand the point of doing this.
Wes didn't say the reason he wanted to zero unused blocks, but I always
do this in kickstart scripts when constructing VM images as the image
size is considerably reduced by doing this...
-Greg
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