Hi Martin, I was hoping that was the case. Thanks for alleviating my worries. I'll keep an eye out for the 3.8 kernel once it goes stable! Thanks again, Chris -----Original Message----- From: Martin Svec [mailto:martin.svec@xxxxxxxx] Sent: Tuesday, January 15, 2013 11:20 AM To: Holcombe, Christopher Cc: target-devel@xxxxxxxxxxxxxxx Subject: Re: Write same w/o unmap bit Hi Chris, this warning is harmless. It means that vSphere VAAI attempts to offload block zeroing operations to the target, which is not supported yet. ESXi falls back to non-accelerated block zeroing in this case. AFAIK, full WRITE_SAME support for IBLOCK backends will be in kernel 3.8. Martin Dne 15.1.2013 16:06, Holcombe, Christopher napsal(a): > Hi Everyone, > > I implemented a few fibre channel targets with LIO connected to vsphere 5. When I perform a vsphere datastore migration I see a ton of these warnings on the LIO server: > "WRITE_SAME w/o UNMAP bit not supported for Block Discard Emulation" > After some digging it appears to be related to the vsphere VAAI. It > doesn't appear to be anything critical. My VM will move properly and > continue running without issues. Anyone know what this means and if > future versions of LIO will support it? I'm currently running kernel > 3.7.2 on Ubuntu 12.10 > > Thanks, > Chris > > ________________________________ > > NOTICE: This e-mail and any attachments is intended only for use by the addressee(s) named herein and may contain legally privileged, proprietary or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this email, and any attachments thereto, is strictly prohibited. If you receive this email in error please immediately notify me via reply email or at (800) 927-9800 and permanently delete the original copy and any copy of any e-mail, and any printout. > N r y b X ǧv ^ ){.n + j ׯzX ܨ} Ơz &j:+v > zZ+ +zf h ~ i z w ? & )ߢfl=== ��.n��������+%������w��{.n����j� ����{ay� ʇڙ���f���h������_�(�階�ݢj"��������G����?���&��
