Re: Vmware ESXi5 Build 623860 - UNMAP Bit

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On Wed, 2012-04-04 at 22:57 -0700, Greg KH wrote:
> On Mon, Apr 02, 2012 at 04:29:49PM -0700, Nicholas A. Bellinger wrote:
> > On Tue, 2012-03-27 at 14:26 +0200, Stefan Gourguis wrote:
> > > Dear List,
> > > 
> > > i have connected an new ESXi5 (Update1 Build) to an Debian 6 LIO Target (Git commit e163b66985fa162bd7c1e29a049b336bc2790a2e).
> > > The Esxi Server is single FC connected to Lio (P2P)..
> > > Lio-Target serves n 100 GB LVM Disk via iblock to the ESXi.
> > > I started installing  an Windows 7 VM on this Datastore (VMFS 5.54)
> > > 

<SNIP>

> > > [ 1320.478306] WRITE_SAME w/o UNMAP bit not supported for Block Discard Emulation
> > > ...
> > > 
> > 
> > Hi Stefan,
> > 
> > The bugfix to make this work by default w/o the extra esxcli call to
> > explicitly disable VAAI on all LUNs was reported by Martin Svec, and
> > went into v3.2-rc5 here:
> > 
> > target: Fix unsupported WRITE_SAME sense payload
> > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=67236c44741e250199ccd77f1115568e68cf8848
> > 
> > However it appears I missed the CC to stable on this one..
> 
> Odd, I see that showing up in the 3.3-rc3 kernel, not 3.2-rc5, what am I
> getting wrong?
> 

Apologies, must have been looking at the wrong top level version here..

> > Greg-KH (CC'ed) would you mind including this into v3.1 and v3.0 stable
> > releases for distros to pick up..?
> 
> The 3.1 kernel is now unsupported, and this patch does apply to 3.2, so
> I added it there, but it does not apply to the 3.0 kernel at all, sorry.

For some reason was thinking the upcoming Debian stable was using v3.1,
but they are in fact using v3.2.15 now..  CC'ing other distro folks here
just as a heads up for any v3.1 distro builds want to pick this up.

Thanks again Greg-KH !

--nab

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