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| From: | Paolo Bonzini |
| Subject: | Re: [Qemu-devel] [PATCH v2 13/20] block/iscsi: use UNMAP to write zeroes if LBPRZ=1 |
| Date: | Thu, 21 Nov 2013 13:05:31 +0100 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130923 Thunderbird/17.0.9 |
Il 21/11/2013 12:54, Peter Lieven ha scritto: > What is the actual reason to add this tweak? The reason is that there are targets that implement UNMAP but not WRITE SAME. But I see what you mean---such a target could validly ignore the unaligned edges of the request. I guess it could be made to work, but unless someone really asks for it, let's drop the patch. Paolo
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