Folks,
We''re pleased to announce the official release of Xen 3.1!
This represents a major milestone in the Xen project containing performance
and stability enhancements, additional features for all architectures, and a
brand new management API. Highlights of this release include:
- XenAPI 1.0 support
- XML configuration files for virtual machines;
- VM life-cycle management operations; and
- Secure on- or off-box XML-RPC with bindings for many languages
- Preliminary save/restore/migrate support for HVM (e.g. Windows) VMs;
- Dynamic memory control for HVM guests;
- 32-on-64 PV guest support (run PAE PV VMs on a 64-bit Xen!); and
- Blktap copy-on-write disk support.
You can get the source using mercurial from:
http://xenbits.xensource.com/xen-3.1-testing.hg
Source and binary tarballs, and RPMs, are available from:
http://www.xensource.com/download/index_oss.html
Cheers,
Keir (on behalf of the whole Xen dev team)
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
On Fri, May 18, 2007 at 05:11:17PM +0100, Keir Fraser wrote:> We''re pleased to announce the official release of Xen 3.1!Congratulations! (I removed xen-announce from the CC as I figured that''s not really the place for this email [and it''s probably moderated :)] ) <snip>> You can get the source using mercurial from: > http://xenbits.xensource.com/xen-3.1-testing.hg > > Source and binary tarballs, and RPMs, are available from: > http://www.xensource.com/download/index_oss.htmlI realise that releases are relatively rare, and this one is somewhat special (with the version numbering change), so the process has some rough edges. I''d like to make the following observations. * Many of the logos on the Xensource site still include the "3.0" branding eg. http://www.xensource.com/images/products/xen_30_r_logo.gif * It''s be nice if there was a download tarball link from: http://www.xensource.com/download/index_oss.html Sure there iare "Mercurial Repository" and "Source Browser" links but they''re not really the same. Is it really a requirement to use Mercurial to get the code? * The Mercurial Repository doesn''t contain a tag "3.1.0" or "3.1.0-final", and the Mercurial Repository is still called 3.1-testing. This makes it a little non-obvious and also if you''re pointing people at a download page for the latest and greatest it doesn''t create a sense of confidence :) It''d be nice to add this little bit of polish if possible. Yours Tony linux.conf.au http://linux.conf.au/ || http://lca2008.linux.org.au/ Jan 28 - Feb 02 2008 The Australian Linux Technical Conference! _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Any chance of getting the -rc10 tag removed from xen/Makefile? Thanks, Jan>>> Keir Fraser <keir@xensource.com> 18.05.07 18:11 >>>Folks, We''re pleased to announce the official release of Xen 3.1! This represents a major milestone in the Xen project containing performance and stability enhancements, additional features for all architectures, and a brand new management API. Highlights of this release include: - XenAPI 1.0 support - XML configuration files for virtual machines; - VM life-cycle management operations; and - Secure on- or off-box XML-RPC with bindings for many languages - Preliminary save/restore/migrate support for HVM (e.g. Windows) VMs; - Dynamic memory control for HVM guests; - 32-on-64 PV guest support (run PAE PV VMs on a 64-bit Xen!); and - Blktap copy-on-write disk support. You can get the source using mercurial from: http://xenbits.xensource.com/xen-3.1-testing.hg Source and binary tarballs, and RPMs, are available from: http://www.xensource.com/download/index_oss.html Cheers, Keir (on behalf of the whole Xen dev team) _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
It''s fixed in the staging tree, just hasn''t been pushed to the public tree yet. We''ll force it through manually in a while... http://xenbits.xensource.com/staging/xen-3.1-testing.hg -- Keir On 21/5/07 11:10, "Jan Beulich" <jbeulich@novell.com> wrote:> Any chance of getting the -rc10 tag removed from xen/Makefile? Thanks, Jan > >>>> Keir Fraser <keir@xensource.com> 18.05.07 18:11 >>> > Folks, > > We''re pleased to announce the official release of Xen 3.1! > > This represents a major milestone in the Xen project containing performance > and stability enhancements, additional features for all architectures, and a > brand new management API. Highlights of this release include: > > - XenAPI 1.0 support > - XML configuration files for virtual machines; > - VM life-cycle management operations; and > - Secure on- or off-box XML-RPC with bindings for many languages > - Preliminary save/restore/migrate support for HVM (e.g. Windows) VMs; > - Dynamic memory control for HVM guests; > - 32-on-64 PV guest support (run PAE PV VMs on a 64-bit Xen!); and > - Blktap copy-on-write disk support. > > You can get the source using mercurial from: > http://xenbits.xensource.com/xen-3.1-testing.hg > > Source and binary tarballs, and RPMs, are available from: > http://www.xensource.com/download/index_oss.html > > Cheers, > Keir (on behalf of the whole Xen dev team) > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Xen 3.1 announces some new features. Where do I obtain its manual for Xen 3. 1? I visited Xen WIKI including the general version of Xem 3.0 manual. -Yuzhong -----邮件原件----- 发件人: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] 代表 Tony Breeds 发送时间: 2007年5月21日 9:27 收件人: Keir Fraser 抄送: xen-devel; xen-users@lists.xensource.com 主题: [Xen-users] Re: [Xen-devel] Xen 3.1 released! On Fri, May 18, 2007 at 05:11:17PM +0100, Keir Fraser wrote:> We''re pleased to announce the official release of Xen 3.1!Congratulations! (I removed xen-announce from the CC as I figured that''s not really the place for this email [and it''s probably moderated :)] ) <snip>> You can get the source using mercurial from: > http://xenbits.xensource.com/xen-3.1-testing.hg > > Source and binary tarballs, and RPMs, are available from: > http://www.xensource.com/download/index_oss.htmlI realise that releases are relatively rare, and this one is somewhat special (with the version numbering change), so the process has some rough edges. I''d like to make the following observations. * Many of the logos on the Xensource site still include the "3.0" branding eg. http://www.xensource.com/images/products/xen_30_r_logo.gif * It''s be nice if there was a download tarball link from: http://www.xensource.com/download/index_oss.html Sure there iare "Mercurial Repository" and "Source Browser" links but they''re not really the same. Is it really a requirement to use Mercurial to get the code? * The Mercurial Repository doesn''t contain a tag "3.1.0" or "3.1.0-final", and the Mercurial Repository is still called 3.1-testing. This makes it a little non-obvious and also if you''re pointing people at a download page for the latest and greatest it doesn''t create a sense of confidence :) It''d be nice to add this little bit of polish if possible. Yours Tony linux.conf.au http://linux.conf.au/ || http://lca2008.linux.org.au/ Jan 28 - Feb 02 2008 The Australian Linux Technical Conference! _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Xen 3.1 announces some new features. Where do I obtain its manual for Xen 3. 1? I visited Xen WIKI including the general version of Xem 3.0 manual. -Yuzhong -----邮件原件----- 发件人: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] 代表 Tony Breeds 发送时间: 2007年5月21日 9:27 收件人: Keir Fraser 抄送: xen-devel; xen-users@lists.xensource.com 主题: [Xen-users] Re: [Xen-devel] Xen 3.1 released! On Fri, May 18, 2007 at 05:11:17PM +0100, Keir Fraser wrote:> We''re pleased to announce the official release of Xen 3.1!Congratulations! (I removed xen-announce from the CC as I figured that''s not really the place for this email [and it''s probably moderated :)] ) <snip>> You can get the source using mercurial from: > http://xenbits.xensource.com/xen-3.1-testing.hg > > Source and binary tarballs, and RPMs, are available from: > http://www.xensource.com/download/index_oss.htmlI realise that releases are relatively rare, and this one is somewhat special (with the version numbering change), so the process has some rough edges. I''d like to make the following observations. * Many of the logos on the Xensource site still include the "3.0" branding eg. http://www.xensource.com/images/products/xen_30_r_logo.gif * It''s be nice if there was a download tarball link from: http://www.xensource.com/download/index_oss.html Sure there iare "Mercurial Repository" and "Source Browser" links but they''re not really the same. Is it really a requirement to use Mercurial to get the code? * The Mercurial Repository doesn''t contain a tag "3.1.0" or "3.1.0-final", and the Mercurial Repository is still called 3.1-testing. This makes it a little non-obvious and also if you''re pointing people at a download page for the latest and greatest it doesn''t create a sense of confidence :) It''d be nice to add this little bit of polish if possible. Yours Tony linux.conf.au http://linux.conf.au/ || http://lca2008.linux.org.au/ Jan 28 - Feb 02 2008 The Australian Linux Technical Conference! _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
You can step into the directory docs/, that is in the top directory of Xen source code, then "make" for your docs in various formats (i.e., pdf, html, ps,tex,...). You should get be a user manual and development manual. -- Dexuan -----Original Message----- From: xen-devel-bounces@lists.xensource.com [mailto:xen-devel-bounces@lists.xensource.com] On Behalf Of Yuzhong Sun Sent: 2007年5月22日 12:07 To: ''Tony Breeds''; ''Keir Fraser'' Cc: ''xen-devel''; xen-users@lists.xensource.com Subject: 答复: [Xen-users] Re: [Xen-devel] Xen 3.1 released! Xen 3.1 announces some new features. Where do I obtain its manual for Xen 3. 1? I visited Xen WIKI including the general version of Xem 3.0 manual. -Yuzhong -----邮件原件----- 发件人: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] 代表 Tony Breeds 发送时间: 2007年5月21日 9:27 收件人: Keir Fraser 抄送: xen-devel; xen-users@lists.xensource.com 主题: [Xen-users] Re: [Xen-devel] Xen 3.1 released! On Fri, May 18, 2007 at 05:11:17PM +0100, Keir Fraser wrote:> We''re pleased to announce the official release of Xen 3.1!Congratulations! (I removed xen-announce from the CC as I figured that''s not really the place for this email [and it''s probably moderated :)] ) <snip>> You can get the source using mercurial from: > http://xenbits.xensource.com/xen-3.1-testing.hg > > Source and binary tarballs, and RPMs, are available from: > http://www.xensource.com/download/index_oss.htmlI realise that releases are relatively rare, and this one is somewhat special (with the version numbering change), so the process has some rough edges. I''d like to make the following observations. * Many of the logos on the Xensource site still include the "3.0" branding eg. http://www.xensource.com/images/products/xen_30_r_logo.gif * It''s be nice if there was a download tarball link from: http://www.xensource.com/download/index_oss.html Sure there iare "Mercurial Repository" and "Source Browser" links but they''re not really the same. Is it really a requirement to use Mercurial to get the code? * The Mercurial Repository doesn''t contain a tag "3.1.0" or "3.1.0-final", and the Mercurial Repository is still called 3.1-testing. This makes it a little non-obvious and also if you''re pointing people at a download page for the latest and greatest it doesn''t create a sense of confidence :) It''d be nice to add this little bit of polish if possible. Yours Tony linux.conf.au http://linux.conf.au/ || http://lca2008.linux.org.au/ Jan 28 - Feb 02 2008 The Australian Linux Technical Conference! _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
2007/5/18, Keir Fraser <keir@xensource.com>:> Folks, > > We''re pleased to announce the official release of Xen 3.1!This version has the same feat of xen enterprise 3.2? -- Alessandro R. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On 23/5/07 22:20, "Alessandro R." <lord2y@gmail.com> wrote:>> Folks, >> >> We''re pleased to announce the official release of Xen 3.1! > > This version has the same feat of xen enterprise 3.2?There''s considerable overlap in feature sets, of course, but the two are not directly comparable. The closest freely-available match in terms of features is Xen Express, which is literally a cut down version of Xen Enterprise. -- Keir _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
OK, I''ll admit confusion on this issue. What is it that Xen Enterprise provides over Xen Community? I know about the management GUI tools and such, but what other virtualization related features are there? -- -- Tom Mornini, CTO -- Engine Yard, Ruby on Rails Hosting -- Support, Scalability, Reliability -- (866) 518-YARD (9273) On May 24, 2007, at 1:19 AM, Keir Fraser wrote:> On 23/5/07 22:20, "Alessandro R." <lord2y@gmail.com> wrote: > >>> Folks, >>> >>> We''re pleased to announce the official release of Xen 3.1! >> >> This version has the same feat of xen enterprise 3.2? > > There''s considerable overlap in feature sets, of course, but the > two are not > directly comparable. The closest freely-available match in terms of > features > is Xen Express, which is literally a cut down version of Xen > Enterprise. > > -- Keir > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> - 32-on-64 PV guest support (run PAE PV VMs on a 64-bit Xen!); andI checked - indeed it works. It is possible to create a 32 bit PV guest on a 64-bit Xen. However, migration of such hosts doesn''t seem to work: whenever I try to migrate a 32-bit PV guest from a 64-bit Xen to a 32-bit Xen (or the other way around), it fails, and the guest domain is not reachable anymore. Is it just me? -- Tomasz Chmielewski http://wpkg.org _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> -----Original Message----- > From: xen-users-bounces@lists.xensource.com > [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of > Tomasz Chmielewski > Sent: 25 May 2007 11:04 > To: xen-users@lists.xensource.com > Subject: [Xen-users] Re: Xen 3.1 released! > > > - 32-on-64 PV guest support (run PAE PV VMs on a 64-bit Xen!); and > > I checked - indeed it works. It is possible to create a 32 > bit PV guest > on a 64-bit Xen. > > However, migration of such hosts doesn''t seem to work: > whenever I try to > migrate a 32-bit PV guest from a 64-bit Xen to a 32-bit Xen (or the > other way around), it fails, and the guest domain is not > reachable anymore.No, I seem to remember that this is a known bug - check the Xen Devel mailing list archive for the last few weeks, I''m 99% sure there is a mention about this particular problem, and I don''t think it''s (completely) fixed in unstable yet either. -- Mats> > Is it just me? > > > -- > Tomasz Chmielewski > http://wpkg.org > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users > > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Tomasz Chmielewski
2007-May-25 10:54 UTC
[Xen-devel] Re: [Xen-users] Re: Xen 3.1 released!
Petersson, Mats schrieb:>>> - 32-on-64 PV guest support (run PAE PV VMs on a 64-bit Xen!); and >> I checked - indeed it works. It is possible to create a 32 >> bit PV guest >> on a 64-bit Xen. >> >> However, migration of such hosts doesn''t seem to work: >> whenever I try to >> migrate a 32-bit PV guest from a 64-bit Xen to a 32-bit Xen (or the >> other way around), it fails, and the guest domain is not >> reachable anymore. > > No, I seem to remember that this is a known bug - check the Xen Devel > mailing list archive for the last few weeks, I''m 99% sure there is a > mention about this particular problem, and I don''t think it''s > (completely) fixed in unstable yet either.I didn''t find any posts about it - at least, not after the 3.1 release date (maybe it was discussed earlier). Also, there''s one more feature which doesn''t work for me: - Preliminary save/restore/migrate support for HVM (e.g. Windows) VMs; What does "preliminary" mean here? I tried saving/restoring HVM domains, but it just doesn''t work. When I try to do /etc/init.d/xendomains stop, it does something for a long time, and then, my SSH session is just disconnected. When I log in again, xend doesn''t work anymore: # xm list Error: Unable to connect to xend: Connection refused. Is xend running? When I start xend again, and then start xendomains, there is my domain in a weird state: # xm list Name ID Mem VCPUs State Time(s) Domain-0 0 256 2 r----- 134.9 migrating-w2k3-001 2 1759 1 ---s-- 64.4 Similar happens when I try to save the domain manually: # xm save w2k3-001 /srv/check-2k And Xen server restarted. (...) I inspected the logs, and it was the OOM-killer. Should it ever happen when saving a guest domain? Xen host has 256 MB RAM for dom0 (3 GB total), Xen guest 1.7 GB. -- Tomasz Chmielewski http://wpkg.org _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
> -----Original Message----- > From: Tomasz Chmielewski [mailto:mangoo@wpkg.org] > Sent: 25 May 2007 11:54 > To: Petersson, Mats > Cc: xen-users@lists.xensource.com; xen-devel@lists.xensource.com > Subject: Re: [Xen-users] Re: Xen 3.1 released! > > Petersson, Mats schrieb: > > >>> - 32-on-64 PV guest support (run PAE PV VMs on a 64-bit > Xen!); and > >> I checked - indeed it works. It is possible to create a 32 > >> bit PV guest > >> on a 64-bit Xen. > >> > >> However, migration of such hosts doesn''t seem to work: > >> whenever I try to > >> migrate a 32-bit PV guest from a 64-bit Xen to a 32-bit > Xen (or the > >> other way around), it fails, and the guest domain is not > >> reachable anymore. > > > > No, I seem to remember that this is a known bug - check the > Xen Devel > > mailing list archive for the last few weeks, I''m 99% sure there is a > > mention about this particular problem, and I don''t think it''s > > (completely) fixed in unstable yet either. > > I didn''t find any posts about it - at least, not after the > 3.1 release > date (maybe it was discussed earlier).Yes, it was before the release that someone pointed this out (someone is most likely either Gerd Hoffman or Jan Beulich).> > > Also, there''s one more feature which doesn''t work for me: > > - Preliminary save/restore/migrate support for HVM (e.g. > Windows) VMs; > > > What does "preliminary" mean here? I tried saving/restoring > HVM domains, > but it just doesn''t work.It is the first PUBLIC release of the hvm save/restore.> > When I try to do /etc/init.d/xendomains stop, it does something for a > long time, and then, my SSH session is just disconnected. > > When I log in again, xend doesn''t work anymore: > > # xm list > Error: Unable to connect to xend: Connection refused. Is xend running? > > > When I start xend again, and then start xendomains, there is > my domain > in a weird state: > > # xm list > Name ID Mem VCPUs State > Time(s) > Domain-0 0 256 2 > r----- 134.9 > migrating-w2k3-001 2 1759 1 > ---s-- 64.4 > > > > Similar happens when I try to save the domain manually: > > # xm save w2k3-001 /srv/check-2k > > And Xen server restarted. > > (...) > > I inspected the logs, and it was the OOM-killer. Should it > ever happen > when saving a guest domain? Xen host has 256 MB RAM for dom0 (3 GB > total), Xen guest 1.7 GB.Hmm, that''s probably something to do with it. Although I''m not sure. I''ve saved 0.5GB domains ona 256MB Dom0 and that works. I''ll try to blow mine up a bit further and see what happens. -- Mats> > -- > Tomasz Chmielewski > http://wpkg.org > > >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Tomasz Chmielewski
2007-May-25 11:14 UTC
Re: [Xen-devel] Re: [Xen-users] Re: Xen 3.1 released!
Tomasz Chmielewski schrieb:> Also, there''s one more feature which doesn''t work for me: > > - Preliminary save/restore/migrate support for HVM (e.g. Windows) VMs; > > > What does "preliminary" mean here? I tried saving/restoring HVM domains, > but it just doesn''t work. > > When I try to do /etc/init.d/xendomains stop, it does something for a > long time, and then, my SSH session is just disconnected. > > When I log in again, xend doesn''t work anymore: > > # xm list > Error: Unable to connect to xend: Connection refused. Is xend running? > > > When I start xend again, and then start xendomains, there is my domain > in a weird state: > > # xm list > Name ID Mem VCPUs State Time(s) > Domain-0 0 256 2 r----- > 134.9 > migrating-w2k3-001 2 1759 1 ---s-- > 64.4 > > > > Similar happens when I try to save the domain manually: > > # xm save w2k3-001 /srv/check-2k > > And Xen server restarted. > > (...) > > I inspected the logs, and it was the OOM-killer. Should it ever happen > when saving a guest domain? Xen host has 256 MB RAM for dom0 (3 GB > total), Xen guest 1.7 GB.It appears that saving of HVM somains needs more memory: in this particular case, when I increased memory for dom0, about 350 MB RAM was used in total during the domain save. After that, save/restore was fine. So I just removed dom0_mem entry from grub; I don''t think it''s needed. -- Tomasz Chmielewski http://wpkg.org _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On 25/5/07 12:14, "Tomasz Chmielewski" <mangoo@wpkg.org> wrote:>> I inspected the logs, and it was the OOM-killer. Should it ever happen >> when saving a guest domain? Xen host has 256 MB RAM for dom0 (3 GB >> total), Xen guest 1.7 GB. > > It appears that saving of HVM somains needs more memory: in this > particular case, when I increased memory for dom0, about 350 MB RAM was > used in total during the domain save.That''s kind of surprising, but I guess totally plausible if you don''t configure a swap partition for dom0? -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Tomasz Chmielewski
2007-May-25 12:57 UTC
Re: [Xen-devel] Re: [Xen-users] Re: Xen 3.1 released!
Keir Fraser schrieb:> > > On 25/5/07 12:14, "Tomasz Chmielewski" <mangoo@wpkg.org> wrote: > >>> I inspected the logs, and it was the OOM-killer. Should it ever happen >>> when saving a guest domain? Xen host has 256 MB RAM for dom0 (3 GB >>> total), Xen guest 1.7 GB. >> It appears that saving of HVM somains needs more memory: in this >> particular case, when I increased memory for dom0, about 350 MB RAM was >> used in total during the domain save. > > That''s kind of surprising, but I guess totally plausible if you don''t > configure a swap partition for dom0?No - dom0 has a 2 GB swap partition. -- Tomasz Chmielewski http://wpkg.org _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On 25/5/07 13:57, "Tomasz Chmielewski" <mangoo@wpkg.org> wrote:>>>> I inspected the logs, and it was the OOM-killer. Should it ever happen >>>> when saving a guest domain? Xen host has 256 MB RAM for dom0 (3 GB >>>> total), Xen guest 1.7 GB. >>> It appears that saving of HVM somains needs more memory: in this >>> particular case, when I increased memory for dom0, about 350 MB RAM was >>> used in total during the domain save. >> >> That''s kind of surprising, but I guess totally plausible if you don''t >> configure a swap partition for dom0? > > No - dom0 has a 2 GB swap partition.Hmmm... That''s not so explicable. Obviously something in save/restore is causing unpageable allocations to happen. Could be pagetables for mappings of HVM guest memory, or something like that. Needs investigating further, I think. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Tomasz Chmielewski
2007-May-25 13:20 UTC
Re: [Xen-devel] Re: [Xen-users] Re: Xen 3.1 released!
Keir Fraser schrieb:> > > On 25/5/07 13:57, "Tomasz Chmielewski" <mangoo@wpkg.org> wrote: > >>>>> I inspected the logs, and it was the OOM-killer. Should it ever happen >>>>> when saving a guest domain? Xen host has 256 MB RAM for dom0 (3 GB >>>>> total), Xen guest 1.7 GB. >>>> It appears that saving of HVM somains needs more memory: in this >>>> particular case, when I increased memory for dom0, about 350 MB RAM was >>>> used in total during the domain save. >>> That''s kind of surprising, but I guess totally plausible if you don''t >>> configure a swap partition for dom0? >> No - dom0 has a 2 GB swap partition. > > Hmmm... That''s not so explicable. Obviously something in save/restore is > causing unpageable allocations to happen. Could be pagetables for mappings > of HVM guest memory, or something like that. Needs investigating further, I > think.Could be. Now that I repeated the save/restore a couple of times, total RAM usage for dom0 jumps to ~700 MB sometimes during domain save (dom0 has now about 2.3 GB RAM, domU has 1.7 GB RAM; 4 GB RAM installed now in the machine). -- Tomasz Chmielewski http://wpkg.org _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On 25/5/07 14:20, "Tomasz Chmielewski" <mangoo@wpkg.org> wrote:>> Hmmm... That''s not so explicable. Obviously something in save/restore is >> causing unpageable allocations to happen. Could be pagetables for mappings >> of HVM guest memory, or something like that. Needs investigating further, I >> think. > > Could be. > > Now that I repeated the save/restore a couple of times, total RAM usage > for dom0 jumps to ~700 MB sometimes during domain save (dom0 has now > about 2.3 GB RAM, domU has 1.7 GB RAM; 4 GB RAM installed now in the > machine).The only thing I would expect could so dramatically inflate dom0''s memory usage would be caching of disc blocks from the saved image file. But we added explicit cache flushing to both domain-save and domain-restore before releasing 3.1. The flushes are only advisory though, so perhaps they are getting ignored for some reason. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Tomasz Chmielewski
2007-May-25 13:56 UTC
Re: [Xen-devel] Re: [Xen-users] Re: Xen 3.1 released!
Keir Fraser schrieb:> On 25/5/07 14:20, "Tomasz Chmielewski" <mangoo@wpkg.org> wrote: > >>> Hmmm... That''s not so explicable. Obviously something in save/restore is >>> causing unpageable allocations to happen. Could be pagetables for mappings >>> of HVM guest memory, or something like that. Needs investigating further, I >>> think. >> Could be. >> >> Now that I repeated the save/restore a couple of times, total RAM usage >> for dom0 jumps to ~700 MB sometimes during domain save (dom0 has now >> about 2.3 GB RAM, domU has 1.7 GB RAM; 4 GB RAM installed now in the >> machine). > > The only thing I would expect could so dramatically inflate dom0''s memory > usage would be caching of disc blocks from the saved image file. But we > added explicit cache flushing to both domain-save and domain-restore before > releasing 3.1. The flushes are only advisory though, so perhaps they are > getting ignored for some reason.For your notice, I just saw 1.3 GB RAM usage when doing a 1.7 GB HVM domain save :) -- Tomasz Chmielewski http://wpkg.org _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On Mon, May 21, 2007 at 11:12:00AM +0100, Keir Fraser wrote:> It''s fixed in the staging tree, just hasn''t been pushed to the public tree > yet. We''ll force it through manually in a while... > > http://xenbits.xensource.com/staging/xen-3.1-testing.hg >public tree still doesn''t have the 3.1.0-final bits.. -- Pasi> -- Keir >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On 29/5/07 11:41, "Pasi Kärkkäinen" <pasik@iki.fi> wrote:> On Mon, May 21, 2007 at 11:12:00AM +0100, Keir Fraser wrote: >> It''s fixed in the staging tree, just hasn''t been pushed to the public tree >> yet. We''ll force it through manually in a while... >> >> http://xenbits.xensource.com/staging/xen-3.1-testing.hg >> > > public tree still doesn''t have the 3.1.0-final bits..Now fixed. Thanks! K. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel