Re: [Xen-devel] preparing for 4.2.2 and 4.1.5 / libxl blktap2 patch

["Dr. Greg Wettstein" <greg@xxxxxxxxxxxxxxxxx>]

On Mar 27, 11:52am, Pasi =?iso-8859-1?Q?K=E4rkk=E4inen?= wrote:
} Subject: Re: [Xen-devel] preparing for 4.2.2 and 4.1.5 / libxl blktap2 pat

Hi, hope the day is going well for everyone.

> > I'd like to get the libxl blktap2 patch applied for 4.2.2,
> > it's already in master / xen-unstable:
> 
> So these patches still need to be applied to Xen 4.2 branch:
> 
> "[PATCH] libxl: don't launch more than one tapdisk process for each disk"
> http://xenbits.xen.org/gitweb/?p=3Dxen.git;a=3Dcommit;h=3Dec398660e89ca18bb=
> 8d061d5047d682bd383778a
> 
> Xen 4.2 backport of the above patch is here:
> http://lists.xen.org/archives/html/xen-devel/2013-03/msg00778.html
> 
> 
> And now there's other tapdisk patch in xen-unstable aswell:
> 
> "tools: Retry blktap2 tapdisk message on interrupt":
> http://xenbits.xen.org/gitweb/?p=3Dxen.git;a=3Dcommit;h=3D6cffb2b469a55032a=
> 2900ccb8776c0082f346758
> 
> Both are needed in Xen 4.2 branch, please backport/apply before next Xen 4.=
> 2.2-rc !
> 
> I'm asking because we've seen these problems with the CentOS 6 Xen 4.2 rpms,
> and it'd be good to get them fixed in upstream Xen 4.2 aswell.

Ian raised a good point with respect to the read/write system calls in
the blktap2 control plane needing to handle EINTR as well.  We've
never seen this issue in the field but it should be handled.

I will see if I can get a patch spun today on top of my last patch to
add that if no one beats me to it.

> Thanks,
> 
> -- Pasi

Have a good afternoon.

Greg

}-- End of excerpt from Pasi =?iso-8859-1?Q?K=E4rkk=E4inen?=

As always,
Dr. G.W. Wettstein, Ph.D.   Enjellic Systems Development, LLC.
4206 N. 19th Ave.           Specializing in information infra-structure
Fargo, ND  58102            development.
PH: 701-281-1686
FAX: 701-281-3949           EMAIL: greg@xxxxxxxxxxxx
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