Block layer discard requests
Posted Aug 14, 2008 17:27 UTC (Thu) by GreyWizard
In reply to: Block layer discard requests
Parent article: Block layer discard requests
This also means that no existing device on the market can take advantage of it.
What about virtual machines? At present once a block is allocated on a dynamic disk the host has no way to know that it can later be discarded, even if almost every file in the guest is deleted. Isn't this exactly the same problem? Changing the software that emulates an ATA device could probably happen more quickly than hardware changes.
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