On Thursday, May 17, 2012 11:57:43 PM Reindl Harald wrote:
> Am 17.05.2012 23:40, schrieb Dmitry Torokhov:
> > On Thursday, May 17, 2012 07:48:35 PM Reindl Harald wrote:
> >> but it is since a long time in the upstream linux kernel
> >> as "vmw_balloon" like also "vmxnet3" and "vmw_pvscsi"
> >> 
> >> hopefully sometimes "vsock", "vmci"
> > 
> > We are presently working on getting VMCI (and later vsock) upstream.
> 
> cool, what is exactly the need of "vsock"

It is a new socket family with semantics similar to the standard TCP sockets 
which can be used to communicate with code running on hypervisor platform 
without network being involved.

> "vmci" is AFAIK used for "VMware HA" and the most
> important thing beside vmxnet3 in vSphere custers

Hmm, VMCI does not have userspace components (vsock and hgfs use it) so I am 
not sure how HA would make use of it... Heartbit from vmtools service uses 
different communication channel. This might change in the future though.

> 
> >> and "vmsync" will also be included
> > 
> > vmsync will not be upstreamed since newer kernel provide FIFREEZE/FITHAW
> > functionality needed to quiesce the filesystems in order to perform
> > consistent backup. If VMware Tools detect that kernel supports these
> > ioctls then vmsync driver is not used.
> 
> if i understand you right i can thow away "kernel/drivers/misc/vmsync.ko"
> in my open-vm-tools packages on Fedora with 3.3.x kernels and
> VMware DataRecovery will still work?

Yes.

Thanks,
Dmitry

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