Hello, I got Centos 5 installed on my server (Linux srv1.local 2.6.18-238.12.1.el5xen #1 SMP Tue May 31 14:02:29 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux). Then I put Debian x64 6 in DomU with 2GB of RAM. It works perfectly. Recently I increase RAM for this VM to 4GB and it starts to hang randomly. I think it hangs when try to use more than 2 GB (may be more) of RAM. So I created new VM with 4GB of RAM. Boot with debian 6 netinst iso and it hangs during install. I decrease memory to 2GB and installed it without a problem. Windows Server works perfectly with 5GB of RAM on this server. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Debian Squeeze do have buggy kernel. Use or newer kernel from debian sid (3.0 or 3.1), or use forward patched kernel from SUSE (afaik 2.6.37-xen). On 03.11.2011 18:38, Ilya V. Kitaev wrote:> Hello, I got Centos 5 installed on my server (Linux srv1.local > 2.6.18-238.12.1.el5xen #1 SMP Tue May 31 14:02:29 EDT 2011 x86_64 > x86_64 x86_64 GNU/Linux). Then I put Debian x64 6 in DomU with 2GB of > RAM. It works perfectly. Recently I increase RAM for this VM to 4GB > and it starts to hang randomly. I think it hangs when try to use more > than 2 GB (may be more) of RAM. So I created new VM with 4GB of RAM. > Boot with debian 6 netinst iso and it hangs during install. I decrease > memory to 2GB and installed it without a problem. Windows Server works > perfectly with 5GB of RAM on this server. > > _______________________________________________ > 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
On 04.11.2011 02:08, George Shuklin wrote:> Debian Squeeze do have buggy kernel. Use or newer kernel from debian > sid (3.0 or 3.1), or use forward patched kernel from SUSE (afaik > 2.6.37-xen). > > On 03.11.2011 18:38, Ilya V. Kitaev wrote: >> Hello, I got Centos 5 installed on my server (Linux srv1.local >> 2.6.18-238.12.1.el5xen #1 SMP Tue May 31 14:02:29 EDT 2011 x86_64 >> x86_64 x86_64 GNU/Linux). Then I put Debian x64 6 in DomU with 2GB of >> RAM. It works perfectly. Recently I increase RAM for this VM to 4GB >> and it starts to hang randomly. I think it hangs when try to use more >> than 2 GB (may be more) of RAM. So I created new VM with 4GB of RAM. >> Boot with debian 6 netinst iso and it hangs during install. I >> decrease memory to 2GB and installed it without a problem. Windows >> Server works perfectly with 5GB of RAM on this server. >> >> _______________________________________________ >> 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-usersSame thing with OpenSuse 11.4 (just for test). Installation hang on setting system clock _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
<Philippe.Simonet@swisscom.com>
2011-Nov-04 13:56 UTC
RE: [Xen-users] Debian 6 as DomU hangs
you say : <Debian Squeeze do have buggy kernel> do you have some link that describes the problem ? I didn''t find anything on that ...> -----Original Message----- > From: xen-users-bounces@lists.xensource.com [mailto:xen-users- > bounces@lists.xensource.com] On Behalf Of George Shuklin > Sent: Thursday, November 03, 2011 11:08 PM > To: xen-users@lists.xensource.com > Subject: Re: [Xen-users] Debian 6 as DomU hangs > > Debian Squeeze do have buggy kernel. Use or newer kernel from debian sid > (3.0 or 3.1), or use forward patched kernel from SUSE (afaik 2.6.37-xen). > > On 03.11.2011 18:38, Ilya V. Kitaev wrote: > > Hello, I got Centos 5 installed on my server (Linux srv1.local > > 2.6.18-238.12.1.el5xen #1 SMP Tue May 31 14:02:29 EDT 2011 x86_64 > > x86_64 x86_64 GNU/Linux). Then I put Debian x64 6 in DomU with 2GB of > > RAM. It works perfectly. Recently I increase RAM for this VM to 4GB > > and it starts to hang randomly. I think it hangs when try to use more > > than 2 GB (may be more) of RAM. So I created new VM with 4GB of RAM. > > Boot with debian 6 netinst iso and it hangs during install. I decrease > > memory to 2GB and installed it without a problem. Windows Server works > > perfectly with 5GB of RAM on this server. > > > > _______________________________________________ > > 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_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On 04.11.2011 14:56, Ilya V. Kitaev wrote:> On 04.11.2011 02:08, George Shuklin wrote: >> Debian Squeeze do have buggy kernel. Use or newer kernel from debian >> sid (3.0 or 3.1), or use forward patched kernel from SUSE (afaik >> 2.6.37-xen). >> >> On 03.11.2011 18:38, Ilya V. Kitaev wrote: >>> Hello, I got Centos 5 installed on my server (Linux srv1.local >>> 2.6.18-238.12.1.el5xen #1 SMP Tue May 31 14:02:29 EDT 2011 x86_64 >>> x86_64 x86_64 GNU/Linux). Then I put Debian x64 6 in DomU with 2GB >>> of RAM. It works perfectly. Recently I increase RAM for this VM to >>> 4GB and it starts to hang randomly. I think it hangs when try to use >>> more than 2 GB (may be more) of RAM. So I created new VM with 4GB of >>> RAM. Boot with debian 6 netinst iso and it hangs during install. I >>> decrease memory to 2GB and installed it without a problem. Windows >>> Server works perfectly with 5GB of RAM on this server. >>> >> > Same thing with OpenSuse 11.4 (just for test). Installation hang on > setting system clockThat is strange, because we using SUSE kernel for debian in product with thousands of virtual machines... Well, other reason may be the problem with console. Kernel is not actually ''hangs'', it just not printing anything on console. Check if domU have correct line in inittab (for xvc0). Or just check if it replays to pings. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
I''ve been using Debian 6 (6.0.3 if I recall correctly) on DomU PV machines with >24GB of RAM and 20 vcpus running very long matlab simulations (a week or more) without any problem. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On 04.11.2011 18:31, George Shuklin wrote:> > On 04.11.2011 14:56, Ilya V. Kitaev wrote: >> On 04.11.2011 02:08, George Shuklin wrote: >>> Debian Squeeze do have buggy kernel. Use or newer kernel from debian >>> sid (3.0 or 3.1), or use forward patched kernel from SUSE (afaik >>> 2.6.37-xen). >>> >>> On 03.11.2011 18:38, Ilya V. Kitaev wrote: >>>> Hello, I got Centos 5 installed on my server (Linux srv1.local >>>> 2.6.18-238.12.1.el5xen #1 SMP Tue May 31 14:02:29 EDT 2011 x86_64 >>>> x86_64 x86_64 GNU/Linux). Then I put Debian x64 6 in DomU with 2GB >>>> of RAM. It works perfectly. Recently I increase RAM for this VM to >>>> 4GB and it starts to hang randomly. I think it hangs when try to >>>> use more than 2 GB (may be more) of RAM. So I created new VM with >>>> 4GB of RAM. Boot with debian 6 netinst iso and it hangs during >>>> install. I decrease memory to 2GB and installed it without a >>>> problem. Windows Server works perfectly with 5GB of RAM on this >>>> server. >>>> >>> >> Same thing with OpenSuse 11.4 (just for test). Installation hang on >> setting system clock > > That is strange, because we using SUSE kernel for debian in product > with thousands of virtual machines... > > Well, other reason may be the problem with console. Kernel is not > actually ''hangs'', it just not printing anything on console. Check if > domU have correct line in inittab (for xvc0). Or just check if it > replays to pings. >Ok. I will try. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On 04.11.2011 19:03, Roger Pau Monné wrote:> I''ve been using Debian 6 (6.0.3 if I recall correctly) on DomU PV > machines with>24GB of RAM and 20 vcpus running very long matlab > simulations (a week or more) without any problem.What version of Xen do you use? And what is your host system? _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
2011/11/4 Ilya V. Kitaev <ilya.kitaev@gmail.com>:> What version of Xen do you use? And what is your host system?I''ve tried with Xen 4.1.1 and xen-unstable, on a NetBSD-current host system (Dom0). If I recall correctly, I think I used the following images to install: http://ftp.nl.debian.org/debian/dists/squeeze/main/installer-amd64/current/images/netboot/xen/ _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On 04.11.2011 18:31, George Shuklin wrote:> > On 04.11.2011 14:56, Ilya V. Kitaev wrote: >> On 04.11.2011 02:08, George Shuklin wrote: >>> Debian Squeeze do have buggy kernel. Use or newer kernel from debian >>> sid (3.0 or 3.1), or use forward patched kernel from SUSE (afaik >>> 2.6.37-xen). >>> >>> On 03.11.2011 18:38, Ilya V. Kitaev wrote: >>>> Hello, I got Centos 5 installed on my server (Linux srv1.local >>>> 2.6.18-238.12.1.el5xen #1 SMP Tue May 31 14:02:29 EDT 2011 x86_64 >>>> x86_64 x86_64 GNU/Linux). Then I put Debian x64 6 in DomU with 2GB >>>> of RAM. It works perfectly. Recently I increase RAM for this VM to >>>> 4GB and it starts to hang randomly. I think it hangs when try to >>>> use more than 2 GB (may be more) of RAM. So I created new VM with >>>> 4GB of RAM. Boot with debian 6 netinst iso and it hangs during >>>> install. I decrease memory to 2GB and installed it without a >>>> problem. Windows Server works perfectly with 5GB of RAM on this >>>> server. >>>> >>> >> Same thing with OpenSuse 11.4 (just for test). Installation hang on >> setting system clock > > That is strange, because we using SUSE kernel for debian in product > with thousands of virtual machines... > > Well, other reason may be the problem with console. Kernel is not > actually ''hangs'', it just not printing anything on console. Check if > domU have correct line in inittab (for xvc0). Or just check if it > replays to pings. >It''s really hangs. No pings. No activity. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Well, those kernel operates fine as ''static'' machine (e.g. run and work). Problems I talk about happens during active migration, memory scaling (ballooning). If you just ''run'' it without ballooning and migration it will works fine. P.S. Talking about xen 3.4 under xen cloud platform. On 04.11.2011 19:03, Roger Pau Monné wrote:> I''ve been using Debian 6 (6.0.3 if I recall correctly) on DomU PV > machines with>24GB of RAM and 20 vcpus running very long matlab > simulations (a week or more) without any problem._______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Well... I''ve stop sending bugs to debian about coexisting xen after few attempts. This kernel afaik do have two problems: 1) Migration sometime fails with machine going to suspend and not going back. Not replated to machine load, can happens even on idle machine. 2) Pre-inflated balloon not supported (supported, but not allow to be deflated lower than start value) On 04.11.2011 17:56, Philippe.Simonet@swisscom.com wrote:> you say :<Debian Squeeze do have buggy kernel> > do you have some link that describes the problem ? I didn''t find > anything on that ... > > >> -----Original Message----- >> From: xen-users-bounces@lists.xensource.com [mailto:xen-users- >> bounces@lists.xensource.com] On Behalf Of George Shuklin >> Sent: Thursday, November 03, 2011 11:08 PM >> To: xen-users@lists.xensource.com >> Subject: Re: [Xen-users] Debian 6 as DomU hangs >> >> Debian Squeeze do have buggy kernel. Use or newer kernel from debian sid >> (3.0 or 3.1), or use forward patched kernel from SUSE (afaik 2.6.37-xen). >> >> On 03.11.2011 18:38, Ilya V. Kitaev wrote: >>> Hello, I got Centos 5 installed on my server (Linux srv1.local >>> 2.6.18-238.12.1.el5xen #1 SMP Tue May 31 14:02:29 EDT 2011 x86_64 >>> x86_64 x86_64 GNU/Linux). Then I put Debian x64 6 in DomU with 2GB of >>> RAM. It works perfectly. Recently I increase RAM for this VM to 4GB >>> and it starts to hang randomly. I think it hangs when try to use more >>> than 2 GB (may be more) of RAM. So I created new VM with 4GB of RAM. >>> Boot with debian 6 netinst iso and it hangs during install. I decrease >>> memory to 2GB and installed it without a problem. Windows Server works >>> perfectly with 5GB of RAM on this server. >>> >>> _______________________________________________ >>> 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_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users