similar to: Unable to stop cluster as heartbeat region still active

Hi, I have just moved(about 2 weeks ago) an OCFS2 cluster into production(latest ocfs2, kernel 2.6.39). I'm getting in nodes dmesg this kind of messages: (rmdir,19142,7):ocfs2_unlink:953 ERROR: status = -39 (rmdir,19305,10):ocfs2_unlink:953 ERROR: status = -39 (rmdir,19556,7):ocfs2_unlink:953 ERROR: status = -39 (rmdir,19561,11):ocfs2_unlink:953 ERROR: status = -39

Ok guys & gals here is the scenario: 1.) Host RHEL 4 U3 2.6.9-34.0.2.EL 2.) OCFS2 latest version 3.) Successfully formatted & mounted OCFS2 filesystems on 2 nodes /dev/sdb1 /u02/oradata/usdev/voting /dev/sdc1 /u02/oradata/usdev/data01 /dev/sdd1 /u02/oradata/usdev/data02 /dev/sde1 /u02/oradata/usdev/data03 4.) Downloaded & installed ASMLib 2.0 on both nodes 5.) Ran

Greetings, Last night I manually unpresented and deleted a LUN (a SAN snapshot) that was presented to one node in a four node RAC environment running OCFS2 v1.4.1-1. The system then rebooted with the following error: Oct 21 16:45:34 ausracdb03 kernel: (27,1):o2hb_write_timeout:166 ERROR: Heartbeat write timeout to device dm-24 after 120000 milliseconds Oct 21 16:45:34 ausracdb03 kernel:

When attempting to mount the OCFS2 file system I'm getting the following error message: ocfs2_hb_ctl: Internal logic failure while starting heartbeat mount.ocfs2: Error when attempting to run /sbin/ocfs2_hb_ctl: "Operation not permitted" I followed the steps given in the users_guide: modprobe ocfs2_dlmfs mount -t configfs none /config mount -t ocfs2_dlmfs none /dlm o2cb_ctl

Hi, I am trying to configure a two node cluster on SLES10SP2 using user level heartbeat. Here is my configuration. ocfs2-tools-1.4.0-0.3 **user level heartbeat** -> lsmod | grep ocfs ocfs2_user_heartbeat 20992 1 ocfs2_dlmfs 37776 1 ocfs2_dlm 204456 1 ocfs2_dlmfs ocfs2_nodemanager 223384 6 ocfs2_user_heartbeat,ocfs2_dlmfs,ocfs2_dlm configfs 44700 3 ocfs2_user_heartbeat,ocfs2_nodemanager

Hi, I'm trying to set up an iscsi 12.5 TB storage for some data backup. Doing so, I had some difficulties to find the right tool, maybe it's also a question of the system settings... The server is a 32Bit CentOS 5.3 with the recent updates. Ths iscsi connection can be establised. fdisk and parted fail to create any information on the device or fail completely. using the lvm tools

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

Hello Xlord, The CPU does have VT support and I already have the nested 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,

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

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

________________________________ 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

Hi, everyone I have some questions with the OCFS2 when using it as vm-store. With Ubuntu 1204, kernel version is 3.2.40, and ocfs2-tools version is 1.6.4. As the network configure change, there are some issues as the log below. Why is there the information of "Node 255 (he) is the Recovery Master for the dead node 255" in the syslog? Why the host ZHJD-VM6 is blocked until it reboot

Hi, everyone I have some questions with the OCFS2 when using it as vm-store. With Ubuntu 1204, kernel version is 3.2.40, and ocfs2-tools version is 1.6.4. As the network configure change, there are some issues as the log below. Why is there the information of "Node 255 (he) is the Recovery Master for the dead node 255" in the syslog? Why the host ZHJD-VM6 is blocked until it reboot

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

For myself KSM is unpredictable feature. The problem is Compute, just this node does "copy on write" , so only Compute. My concern 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

No luck with qemu-kvm-ev, the behavior is the same. Running perf record -a -g on the baremetal shows that most of the CPU time is in _raw_spin_lock Children Self Command Shared Object Symbol - 93.62% 93.62% qemu-kvm [kernel.kallsyms] [k] _raw_spin_lock - _raw_spin_lock + 45.30%

Hello, I have an OpenStack setup in virtual environment on CentOS 7. The baremetal has *nested KVM* enabled and 1 compute node as 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

I would attempt to decrease number of VCPUS allocated to cloud VMs. Say try 4 => 2 . My guess there is not enough VCPUs to run OS itself. I also guess CPU model << Haswell. Please , confirm ( or not) if possible. 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.

Hello, I have some performance problems in a file server system. It is used as Samba and NFS file server. I have some ideas what might cause the problems, and I want to try step by step. First I have to learn more about these areas. First I have some questions about tuning/sizing the ext3 journal. The most extensive list I found on ext3 performance tuning is

Reports posted look good for me. Config should provide the best available performance for cloud VM (L2) on Compute Node. 1. Please, remind me what goes wrong from your standpoint ? 2. Which CPU is installed on Compute Node && how much RAM ? Actually , my concern is :- Number_of_ Cloud_VMs versus Number_CPU_Cores ( not threads) Please, check `top` report in