keep in mind vmware was start from redhat 7, IIRC Sent from my iPad
On Dec 29, 2011, at 14:25, Octave Orgeron <[email protected]> wrote: > Hi, > > First off this list is for Oracle VM Server for SPARC (a.k.a. OVM/SPARC, > a.k.a. Logical Domains, a.k.a. LDoms). It does not use the Xen hypervisor and > is completely different from Oracle VM Server for x86. > > With OVM on SPARC, the device drivers are not emulated to fool guest domains. > Instead, guest domains have virtual drivers to communicate over the Logical > Domain Channels (LDCs) to the Primary or Service Domain where a virtual > service (VDS, VSW, etc.) will communicate with the correct underlining > Solaris device driver that has direct access to the physical hardware. So > basically, I/O operations are proxied to the Primary or Service Domain that > has direct access to the physical hardware. This takes very little overhead > and the drivers are included in Solaris 10 and above on SPARC for guests. > Guest domains can also be assigned a physical PCI-E slot and the guest domain > can use the normal Solaris drivers to operate any PCI-E device on that slot. > Another important distinction here is that OVM on SPARC does not use > time-slicing, hardware emulation, or host based memory management. Instead, > the UltraSPARC hypervisor which is in the firmware is able to partition the > CPU cores and threads for guests, partition memory at the memory controller > level, and partition PCI fabric devices. So when you create a domain, you > hardware partition CPU and memory resources. You can either virtualize or > partition I/O to guests depending on your requirements. This is totally > different from Xen, KVM, VMware, Hyper-V etc which all require a > infrastructure above the OS. > > OVM on x86 is basically the Xen hypervisor running on Oracle Enterprise > Linux. With OVM on x86, there are two routes for guest domain drivers. Either > you use the paravirtualized drivers (PVM) to proxy I/O to the Dom0 or you use > emulation where QEMU is used to provide emulated hardware that the guest sees > as being real. As a result, the guest will use it's native device drivers and > this requires considerable overhead. The paravirtualized drivers will present > a virtual device that proxies requests back to Dom0 where a daemon will > handle the I/O requests to the native device drivers. This takes less > overhead, but requires special drivers to be installed in the guest OS if > they are not natively present (Windows, some Linux distros/versions, etc.). > There is also support for hardware acceleration (HVM) where the Intel/AMD > extensions can help with CPU and memory performance. Ultimately, VMware and > OVM on x86 are very similar under the hood and have differences in > constraints, limits, and management tools. But the driver mechanisms are very > similar as Linux is used as the underlining I/O infrastructure for both. With > most hypervisors on x86, QEMU is pretty much the defacto I/O emulation tool > used to emulate disk, network, and video hardware. > > I hope this clears things up:) > > > *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* > Octave J. Orgeron > Enterprise Architect, SCSA > Web: http://unixconsole.blogspot.com > E-Mail: [email protected] > *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* > From: "[email protected]" <[email protected]> > To: [email protected]; [email protected] > Sent: Thursday, December 29, 2011 11:38 AM > Subject: Re: [ldoms-discuss] Oracle VM vs VMWARE > > Thanks for replying . > But still my question is not answered. > > If we have OVM-X86 and the guests are windows/solari/linux ...will we be > requiring separate drivers ? > > Thanks > > Sunny Biswas * SunGard Computer Services * EON, Kharadi Knowledge Park (SEZ), > Pune 411014 INDIA . Tel +91 (20) 3012-7000 Extn: 7251 . Mobile +91 > 9765554258 * Service Desk 1800 628-9440 > Join SunGard's customers, partners and industry experts at > www.sungard.com/ten to discuss how the need for more Transparency, Efficiency > and Networks is changing our industry and to register for a city day event > near you. > VIENNA HOUSTON FRANKFURT BEIJING HONG KONG NEW YORK LONDON SEOUL ZURICH > MUMBAI JOHANNESBURG DUBAI SAO PAULO > > CONFIDENTIALITY: This e-mail (including any attachments) may contain > confidential, proprietary and privileged information, and unauthorized > disclosure or use is prohibited. If you receive this e-mail in error, please > notify the sender and delete this e-mail from your system. > > > -----Original Message----- > From: Hudes, Dana [mailto:[email protected]] > Sent: Thursday, December 29, 2011 12:33 PM > To: Biswas, Sunny; [email protected] > Subject: RE: Oracle VM vs VMWARE > > OVM-SPARC (LDOM) presents a virtual interface if you virtualized the > interface (which you should). It is called net0. In Solaris 11, ALL Ethernet > interfaces are virtualized as netN > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of > [email protected] > Sent: Thursday, December 29, 2011 12:30 PM > To: [email protected] > Subject: [ldoms-discuss] Oracle VM vs VMWARE > > > The xen hypervisor does not present the same driver for hardware devices such > as nic, scsi controller which means that we would have to manage device > drivers like we do with the different operating systems (win and lin/unix) > whereas, VMWARE presents a virtual driver to all the operating systems and it > appears as the same driver. Basically, vmware virtualizes the hardware > presented to virtual machines where virtual machines running on oracle vm > will need native drivers. > > Is the above statement correct.....Do we need separate drivers for guest OS > in oracle VM ?? > > > Thanks > Sunny > > _______________________________________________ > ldoms-discuss mailing list > [email protected] > http://mail.opensolaris.org/mailman/listinfo/ldoms-discuss > > > _______________________________________________ > ldoms-discuss mailing list > [email protected] > http://mail.opensolaris.org/mailman/listinfo/ldoms-discuss > > > _______________________________________________ > ldoms-discuss mailing list > [email protected] > http://mail.opensolaris.org/mailman/listinfo/ldoms-discuss
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