search for: laurentiu

It sounds weird, but attempt to disable KSM and see would it help or no ? ________________________________ From: centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> on behalf of Laurentiu Soica <laurentiu at soica.ro> Sent: Wednesday, August 17, 2016 4:56 AM To: Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] Nested KVM issue Enabled the logging on both compute and baremetal. Nothing strange in logs: on baremetal : Wed Aug 17 11:51:01 EEST 2016: comm...

I would enable ksmtuned logging ,if it has been done verify logs ________________________________ From: centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> on behalf of Laurentiu Soica <laurentiu at soica.ro> Sent: Tuesday, August 16, 2016 7:16 AM To: Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] Nested KVM issue Yes. It is on both baremetal and compute node. ?n mar., 16 aug. 2016 la 13:37, Boris Derzhavets <bderzhavets at hotmail.com&l...

...n exactly is where would it lead to worse or better Guest behavior ? I am not expecting complete fix. I would track via top/htop and dmesg via Cron on 1-2 hr period. ________________________________ From: centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> on behalf of Laurentiu Soica <laurentiu at soica.ro> Sent: Wednesday, August 17, 2016 6:38 AM To: Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] Nested KVM issue Both baremetal and compute ? Are there any other metrics do you consider useful to collect for troubleshooting purposes ? ?n mi...

Is KSM enabled on your Compute Nodes ( presuming CentOS 7.2 on bare metal ) ? ________________________________ From: centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> on behalf of Laurentiu Soica <laurentiu at soica.ro> Sent: Tuesday, August 16, 2016 5:25 AM To: Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] Nested KVM issue Running the compute node for several days simply triggers it. ?n mar., 16 aug. 2016 la 12:12, Boris Derzhavets <bderzhavets a...

...sted KVM enabled. Checking the Linux Kernel release notes I saw that the nested kvm feature was implemented in 3.10 but he EPT support is in 3.12. So Centos 7's kernel which is 3.10 does have the EPT support? Is there a way to check that the EPT support is available in the kernel? Thank you, Laurentiu On Thu, Aug 4, 2016, 06:04 -=X.L.O.R.D=- <xlord.sl at gmail.com> wrote: > Dear Laurentiu, > > Please check below info since assume your CentOS7 box CPU processor > already VT supported in advance. > > 1) Checkpoint #1: Hardware and Kernel modules > > a. cat /...

Sorry, How you trigger the problem ? B. ________________________________ From: centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> on behalf of Laurentiu Soica <laurentiu at soica.ro> Sent: Tuesday, August 16, 2016 3:28 AM To: Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] Nested KVM issue Hello, The issue reproduced again and it doesn't look like a swap problem. Some details: on the baremetal, from top: top -...

...- 93.62% 93.62% qemu-kvm [kernel.kallsyms] [k] _raw_spin_lock - _raw_spin_lock + 45.30% kvm_mmu_sync_roots + 28.49% kvm_mmu_load + 25.00% mmu_free_roots + 1.12% tdp_page_fault ?n joi, 18 aug. 2016 la 11:59, Laurentiu Soica <laurentiu at soica.ro> a scris: > I've tried with KSM disabled and nothing changed. > > I've upgraded KVM to qemu-kvm-ev. I'm waiting to see if there are any > improvements and report back. > > ?n mie., 17 aug. 2016 la 15:10, Boris Derzhavets <bderzhav...

________________________________ From: centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> on behalf of Laurentiu Soica <laurentiu at soica.ro> Sent: Sunday, August 14, 2016 10:17 AM To: Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] Nested KVM issue More details on the subject: I suppose it is a nested KVM issue because it raised after I enabled the nested KVM feature. Withou...

...ith "ocfs2_hb_ctl -K -d /dev/mapper/volgr1-lvol0 ocfs2" (after finding the refs number with "ocfs2_hb_ctl -I -d /dev/mapper/volgr1-lvol0 "). But even if refs number is set to zero the "heartbeat region still active" occurs. How can i fix this? Thank you in advance. Laurentiu.

...e. Since Haswell was launched via my experience Intel Xeons based on this kernel (or latter kernels ) behaves much better then SandyBridge or IvyBridge based. Boris. ________________________________ From: centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> on behalf of Laurentiu Soica <laurentiu at soica.ro> Sent: Monday, August 15, 2016 1:15 AM To: Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] Nested KVM issue Hello Borins, 1. So, in about three days after a reboot (this happened several times already) the compute node reports high CPU u...

...ly , my concern is :- Number_of_ Cloud_VMs versus Number_CPU_Cores ( not threads) Please, check `top` report in regards of swap area size. Thanks. Boris. ________________________________ From: centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> on behalf of Laurentiu Soica <laurentiu at soica.ro> Sent: Sunday, August 14, 2016 3:06 PM To: Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] Nested KVM issue Hello, 1. <domain type='kvm' id='6'> <name>baremetalbrbm_1</name> <uuid>534e9b54-5e4c...

...Guest > behavior ? > > I am not expecting complete fix. I would track via top/htop and dmesg > via Cron on 1-2 hr > > period. > > > ------------------------------ > *From:* centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> > on behalf of Laurentiu Soica <laurentiu at soica.ro> > *Sent:* Wednesday, August 17, 2016 6:38 AM > > *To:* Discussion about the virtualization on CentOS > *Subject:* Re: [CentOS-virt] Nested KVM issue > Both baremetal and compute ? Are there any other metrics do you consider > useful to collect f...

...a VM. Inside the compute node I have multiple VMs running. After about every 3 days the VMs get inaccessible and the compute node reports high CPU usage. The qemu-kvm process for each VM inside the compute node reports full CPU usage. Please help me with some hints to debug this issue. Thanks, Laurentiu -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-virt/attachments/20160813/77cb3df8/attachment-0002.html>

...3:04, Boris Derzhavets <bderzhavets at hotmail.com> a scris: > It sounds weird, but attempt to disable KSM and see would it help or no ? > > > ------------------------------ > *From:* centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> > on behalf of Laurentiu Soica <laurentiu at soica.ro> > *Sent:* Wednesday, August 17, 2016 4:56 AM > > *To:* Discussion about the virtualization on CentOS > *Subject:* Re: [CentOS-virt] Nested KVM issue > Enabled the logging on both compute and baremetal. Nothing strange in > logs: > > on bar...

...2016 la 15:26, Boris Derzhavets <bderzhavets at hotmail.com> a scris: > I would enable ksmtuned logging ,if it has been done verify logs > > > ------------------------------ > *From:* centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> > on behalf of Laurentiu Soica <laurentiu at soica.ro> > *Sent:* Tuesday, August 16, 2016 7:16 AM > > *To:* Discussion about the virtualization on CentOS > *Subject:* Re: [CentOS-virt] Nested KVM issue > Yes. It is on both baremetal and compute node. > > ?n mar., 16 aug. 2016 la 13:37, Boris Derz...

Dear Laurentiu, Could you please check if your CPU supported from /proc/cpuinfo and lscpu ? EPT supported Xlord From: -=X.L.O.R.D=- [mailto:xlord.sl at gmail.com] Sent: Thursday, August 4, 2016 5:12 PM To: 'Laurentiu Soica' <laurentiu at soica.ro>; 'Discussion about the virtualization...

...305,10):ocfs2_unlink:953 ERROR: status = -39 (rmdir,19556,7):ocfs2_unlink:953 ERROR: status = -39 (rmdir,19561,11):ocfs2_unlink:953 ERROR: status = -39 (rmdir,19789,9):ocfs2_unlink:953 ERROR: status = -39 (rmdir,19868,11):ocfs2_unlink:953 ERROR: status = -39 Should i worry about them? Thank you. Laurentiu.

...s Derzhavets <bderzhavets at hotmail.com> a scris: > Is KSM enabled on your Compute Nodes ( presuming CentOS 7.2 on bare metal > ) ? > > > ------------------------------ > *From:* centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> > on behalf of Laurentiu Soica <laurentiu at soica.ro> > *Sent:* Tuesday, August 16, 2016 5:25 AM > > *To:* Discussion about the virtualization on CentOS > *Subject:* Re: [CentOS-virt] Nested KVM issue > Running the compute node for several days simply triggers it. > > ?n mar., 16 aug. 2016 la 12...

...git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/log/?id=refs%2Ftags%2Fv3.12.62&qt=grep&q=Nested+ept What options do I have to get this commits on a Centos 7 kernel? Thank you, Laurentii On Thu, Aug 4, 2016, 12:14 -=X.L.O.R.D=- <xlord.sl at gmail.com> wrote: > Dear Laurentiu, > > Could you please check if your CPU supported from /proc/cpuinfo and lscpu ? > > > > EPT supported > > Xlord > > > > *From:* -=X.L.O.R.D=- [mailto:xlord.sl at gmail.com] > *Sent:* Thursday, August 4, 2016 5:12 PM > *To:* 'Laurentiu Soica' <la...

...aug. 2016 la 12:12, Boris Derzhavets <bderzhavets at hotmail.com> a scris: > Sorry, > > How you trigger the problem ? > > B. > > > ------------------------------ > *From:* centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> > on behalf of Laurentiu Soica <laurentiu at soica.ro> > *Sent:* Tuesday, August 16, 2016 3:28 AM > > *To:* Discussion about the virtualization on CentOS > *Subject:* Re: [CentOS-virt] Nested KVM issue > Hello, > > The issue reproduced again and it doesn't look like a swap problem. Some >...