Hi. We have a Xen running on Centos 5.5 on a HP ML 150 G6. We run just one VM (4 CPUS) with (SBS 2000) Windows 2000 Server SP4 + SQL + Exchange We have experiencing some issues: - Slow VM usage. - We have to click icons on console twice. - High CPU usage (always 99%) on Xen Monitor with no activity on VM client (below 5%) - VM Disk corruption (VM disk file based) We apreciate any sugestions. Best regards, Vitor Sarabando cid:image002.jpg@01CA226E.3227B350 SYSDOMAIN, Manutenção de Sistemas Informáticos, Lda. R. Luís de Camões, 39 CV Esq 1495-083 Algés Telf.: 214 194 354 Tlm: 917 215 972 Fax.: 211 454 920 Email: <mailto:clientes@sysdomain.pt> clientes@sysdomain.pt AVISO DE CONFIDENCIALIDADE: Este e-mail e quaisquer ficheiros informáticos com ele transmitidos são confidenciais e destinados ao conhecimento e uso exclusivo do respectivo destinatário, não podendo o conteúdo dos mesmos ser alterado. Caso tenha recebido este e-mail indevidamente, queira informar de imediato o remetente e proceder à destruição da mensagem. CONFIDENTIALITY WARNING: This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. Their contents may not be altered. If you have received this e-mail in error please notify the sender and destroy it immediately. * Antes de imprimir este mail, pense bem se tem mesmo que o fazer. Proteja o meio ambiente. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Todd Deshane
2010-Dec-18 21:49 UTC
Re: [Xen-users] XEN - VM CPU usage / VM disk corruption
On Wed, Dec 15, 2010 at 5:25 AM, Vitor Sarabando <vitor.sarabando@sysdomain.pt> wrote:> > Hi. > > > > We have a Xen running on Centos 5.5 on a HP ML 150 G6. We run just one VM (4 CPUS) with (SBS 2000) Windows 2000 Server SP4 + SQL + Exchange >Just checking, since you didn''t specify. The Xen version is the one included in Centos 5.5 and the packages are up to date?> > > We have experiencing some issues: > > - Slow VM usage.How do you characterize this, what metrics are you using?> - We have to click icon’s on console twice. >What console?> - High CPU usage (always 99%) on Xen Monitor with no activity on VM client (below 5%) >Nothing is running on the VM? Can you post some log files? For example, the xend log. dmesg in the guest, xm dmesg, etc. anything that could give some more information.> - VM Disk corruption (VM disk file based) >How? What operations caused this and how did you determine corruption? Providing more information to the list allows us to give better suggestions. For example, have you tried over types of guests? Linux, PV, etc.? Similar problems? Also, you may find hints by searching xen.markmail.org for similar issues. Hope that helps. Thanks, Todd _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Todd Deshane
2010-Dec-23 11:07 UTC
Re: [Xen-users] XEN - VM CPU usage / VM disk corruption
On Thu, Dec 23, 2010 at 5:41 AM, Vitor Sarabando <vitor.sarabando@sysdomain.pt> wrote:> On Wed, Dec 15, 2010 at 5:25 AM, Vitor Sarabando > <vitor.sarabando@sysdomain.pt> wrote: >> >> Hi. >> >> >> >> We have a Xen running on Centos 5.5 on a HP ML 150 G6. We run just one VM > (4 CPUS) with (SBS 2000) Windows 2000 Server SP4 + SQL + Exchange >>Todd Deshane wrote:> > > Just checking, since you didn''t specify. The Xen version is the one > included in Centos 5.5 and the packages are up to date? > > 1. Yes we are running the included version odf centos 5.5, and the system is > updated.> >> >> >> We have experiencing some issues: >> >> - Slow VM usage. > > How do you characterize this, what metrics are you using? > > > >> - We have to click icon’s on console twice. >> >> 2. (reply in 3)> What console? >> 3. When we open the VM console (VNC) we wave double or triple lick the > options to get them going.>> - High CPU usage (always 99%) on Xen Monitor with no activity on > VM client (below 5%) >> > > Nothing is running on the VM? > > Can you post some log files? For example, the xend log. dmesg in the > guest, xm dmesg, etc. anything that could give some more information. > > 4. Can you specify who to get the logs? My Linux Knowledge is limited.In the dom0 console, /var/log/xend.log. Also run xm dmesg.> >> - VM Disk corruption (VM disk file based) >> > > How? What operations caused this and how did you determine corruption? >> 5. At some point we restarted the OS client (Windows 2000 Server), and the > system didn''t start anymore, we booted from an alternate VM disk and we > checked the disk didn''t and is completely unusable, partition corruption, > file corruption, the works. >> Providing more information to the list allows us to give better suggestions. > > For example, have you tried over types of guests? Linux, PV, etc.? > Similar problems? > > Also, you may find hints by searching xen.markmail.org for similar issues.> > We goggle around, but we didn’t found any similar problem. The only strange > thing is CPU usage always near 100% on host machine, the same on Xen console > and the Client VM is running idle. >I still wonder if this is actually usage or a clock problem.> Another strange problem is we have to multiple click the desktop icons or > ''Start menu'' option to get them going. We we install the VM we had several > BSOD,that we related to low memory available on host only 2Gb. > > We upgrade to 6Gb had we never had that experience. We created a virtual > disk (file based) of 150Gb, can this present a problem? > > > Any help would be appreciated.Please post your guest config files and be sure to reply to all to include the xen-users list as others may have good suggestions and insights. Thanks, Todd _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users