Hi! I always have the same question... It''s possible install linux domU by 2 ways: 1) like a windows domU (using distribution''s cd or dvd and vnc) 2) with xen-tools and xen-create-image. With this way it''s necessary use a kernel with support for xen domU. Does the option 2 use a kernel with domU support to avoid the paravirtualization? What is the best option?why? Thanks alberto _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Sun, Aug 30, 2009 at 2:11 AM, Alberto Asuero Arroyo<albertoasuero@gmail.com> wrote:> Hi! > > I always have the same question... > > It''s possible install linux domU by 2 ways: > > 1) like a windows domU (using distribution''s cd or dvd and vnc)Short answer: No. Long answer: - yes, if it''s a HVM domU - mostly no, if you use PV domU. This is mainly because --> the Linux installer that I know of is having problems mapping the ISO as cdrom device. --> Linux install/live CD/DVD usually don''t have -xen kernel. So it''s installer and packaging issue. This might change in the future though. Note that Opensolaris can use CD/DVD for installation for both HVM and PV domU installation.> > 2) with xen-tools and xen-create-image. With this way it''s necessary use a > kernel with support for xen domU. > > > Does the option 2 use a kernel with domU support to avoid the > paravirtualization?In terms of PV domU installation, these tools (xen-create-image, debootstrap, etc.) act as replacement for standard installation method.> > What is the best option?why?Depends on your needs and preference. For RHEL-based distros, the recommended way is to use virt-install using http mirror. For Debian/Ubuntu-based, I prefer to use debootstrap plus manual customizations. -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Actually, the three Linux distributions that I deal with on a regular basis - CentOS 5, OpenSuSE 10.3/11.1, and SLES10 - do have -xen kernels included on the CD/DVD distribution media. Now, it still takes a little bit of work to get that kernel to boot correctly for a PV domU installation, but it does work. The virt-install graphical management tool will look for the -xen kernel RPM on install media like CD/DVD and extract and boot it in order to kick off the install. If you''re using the command line, though, you''ll have to accomplish this by hand. -Nick>>> On 2009/08/30 at 20:36, "Fajar A. Nugraha" <fajar@fajar.net> wrote:On Sun, Aug 30, 2009 at 2:11 AM, Alberto Asuero Arroyo<albertoasuero@gmail.com> wrote:> Hi! > > I always have the same question... > > It''s possible install linux domU by 2 ways: > > 1) like a windows domU (using distribution''s cd or dvd and vnc)Short answer: No. Long answer: - yes, if it''s a HVM domU - mostly no, if you use PV domU. This is mainly because --> the Linux installer that I know of is having problems mapping the ISO as cdrom device. --> Linux install/live CD/DVD usually don''t have -xen kernel. So it''s installer and packaging issue. This might change in the future though. Note that Opensolaris can use CD/DVD for installation for both HVM and PV domU installation.> > 2) with xen-tools and xen-create-image. With this way it''s necessary use a > kernel with support for xen domU. > > > Does the option 2 use a kernel with domU support to avoid the > paravirtualization?In terms of PV domU installation, these tools (xen-create-image, debootstrap, etc.) act as replacement for standard installation method.> > What is the best option?why?Depends on your needs and preference. For RHEL-based distros, the recommended way is to use virt-install using http mirror. For Debian/Ubuntu-based, I prefer to use debootstrap plus manual customizations. -- Fajar -------- This e-mail may contain confidential and privileged material for the sole use of the intended recipient. If this email is not intended for you, or you are not responsible for the delivery of this message to the intended recipient, please note that this message may contain SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly prohibited from downloading, photocopying, distributing or otherwise using this message, its contents or attachments in any way. If you have received this message in error, please notify us immediately by replying to this e-mail and delete the message from your mailbox. Information contained in this message that does not relate to the business of SEAKR is neither endorsed by nor attributable to SEAKR. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Mon, Aug 31, 2009 at 7:54 PM, Nick Couchman<Nick.Couchman@seakr.com> wrote:> Actually, the three Linux distributions that I deal with on a regular basis > - CentOS 5, OpenSuSE 10.3/11.1, and SLES10 - do have -xen kernels included > on the CD/DVD distribution media.Good to know then :)> Now, it still takes a little bit of work > to get that kernel to boot correctly for a PV domU installation, but it does > work. The virt-install graphical management tool will look for the -xen > kernel RPM on install media like CD/DVD and extract and boot it in order to > kick off the install. If you''re using the command line, though, you''ll have > to accomplish this by hand.Can you point to a howto on this? -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
I will try to come up with something - I''ve been using the GUI tools so long that I haven''t had a need to do the manual method of installation in quite some time. I also have been using HTTP-based install sources for a while now, so it''s been a while since I tried a CD/DVD/ISO. Maybe I spoke to quickly :-)...but I''ll see if I can write something up. -Nick>>> On 2009/08/31 at 20:25, "Fajar A. Nugraha" <fajar@fajar.net> wrote:On Mon, Aug 31, 2009 at 7:54 PM, Nick Couchman<Nick.Couchman@seakr.com> wrote:> Actually, the three Linux distributions that I deal with on a regular basis > - CentOS 5, OpenSuSE 10.3/11.1, and SLES10 - do have -xen kernels included > on the CD/DVD distribution media.Good to know then :)> Now, it still takes a little bit of work > to get that kernel to boot correctly for a PV domU installation, but it does > work. The virt-install graphical management tool will look for the -xen > kernel RPM on install media like CD/DVD and extract and boot it in order to > kick off the install. If you''re using the command line, though, you''ll have > to accomplish this by hand.Can you point to a howto on this? -- Fajar -------- This e-mail may contain confidential and privileged material for the sole use of the intended recipient. If this email is not intended for you, or you are not responsible for the delivery of this message to the intended recipient, please note that this message may contain SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly prohibited from downloading, photocopying, distributing or otherwise using this message, its contents or attachments in any way. If you have received this message in error, please notify us immediately by replying to this e-mail and delete the message from your mailbox. Information contained in this message that does not relate to the business of SEAKR is neither endorsed by nor attributable to SEAKR. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Alberto Asuero Arroyo
2009-Sep-07 10:54 UTC
Re: [Xen-users] paravirtualization on linux domU
HI!! Thanks for the replies!>> What is the best option?why?>Depends on your needs and preference. For RHEL-based distros, the >recommended way is to use virt-install using http mirror. For >Debian/Ubuntu-based, I prefer to use debootstrap plus manual >customizations.May you point out what method produces the highest performance for a dom U?? PV domU or HVM domU?? -- Alberto On Tue, Sep 1, 2009 at 4:32 PM, Nick Couchman <Nick.Couchman@seakr.com>wrote:> I will try to come up with something - I''ve been using the GUI tools so > long that I haven''t had a need to do the manual method of installation in > quite some time. I also have been using HTTP-based install sources for a > while now, so it''s been a while since I tried a CD/DVD/ISO. Maybe I spoke > to quickly :-)...but I''ll see if I can write something up. > > -Nick > > > >>> On 2009/08/31 at 20:25, "Fajar A. Nugraha" <fajar@fajar.net> wrote: > > On Mon, Aug 31, 2009 at 7:54 PM, Nick Couchman<Nick.Couchman@seakr.com> > wrote: > > Actually, the three Linux distributions that I deal with on a regular > basis > > - CentOS 5, OpenSuSE 10.3/11.1, and SLES10 - do have -xen kernels > included > > on the CD/DVD distribution media. > > Good to know then :) > > > Now, it still takes a little bit of work > > to get that kernel to boot correctly for a PV domU installation, but it > does > > work. The virt-install graphical management tool will look for the -xen > > kernel RPM on install media like CD/DVD and extract and boot it in order > to > > kick off the install. If you''re using the command line, though, you''ll > have > > to accomplish this by hand. > > Can you point to a howto on this? > > -- > Fajar > > ------------------------------ > <br><hr> > This e-mail may contain confidential and privileged material for the sole > use of the intended recipient. If this email is not intended for you, or you > are not responsible for the delivery of this message to the intended > recipient, please note that this message may contain SEAKR Engineering > (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly > prohibited from downloading, photocopying, distributing or otherwise using > this message, its contents or attachments in any way. If you have received > this message in error, please notify us immediately by replying to this > e-mail and delete the message from your mailbox. Information contained in > this message that does not relate to the business of SEAKR is neither > endorsed by nor attributable to SEAKR. >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Mon, Sep 7, 2009 at 5:54 PM, Alberto Asuero Arroyo<albertoasuero@gmail.com> wrote:> May you point out what method produces the highest performance for a dom > U?? PV domU or HVM domU??PV domU will provide greatest performance. So when your guest OS support both PV and HVM guest, use PV. -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Alberto Asuero Arroyo
2009-Sep-09 14:34 UTC
Re: [Xen-users] paravirtualization on linux domU
OK, thanks! - Alberto On Mon, Sep 7, 2009 at 1:59 PM, Fajar A. Nugraha <fajar@fajar.net> wrote:> On Mon, Sep 7, 2009 at 5:54 PM, Alberto Asuero > Arroyo<albertoasuero@gmail.com> wrote: > > May you point out what method produces the highest performance for a dom > > U?? PV domU or HVM domU?? > > PV domU will provide greatest performance. So when your guest OS > support both PV and HVM guest, use PV. > > -- > Fajar >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users