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Hi All, It would seem that after disabling ksmtuned in our Cluster we have had another VM Application thread die without warning. We are currently on Version: Virtual Environment 4.4-12/e71b7a74 . Does anyone have any suggestions that I have not tested ?

Hi Jacques, I will be looking into the ksmtuned services asap, do some testing and revert back.

Further Update: We have completed a RAID array health check this did not reveal any problems. Please note that we have confirmed that both the RAM and HDD setup are healthy. Please advise as to what we need to do next? Have there been any hotfixes since the 16th of December 2016 that could...

Update: We have performed a RAM test on the affected Host, this did not reveal any problems with the RAM. Furthermore we have still had the issue with the segmentation fault occur on a handful of KVMs. We are now busy scheduling a test on our RAID array to confirm that all is healthy. Could...

We are busy planning to take the affected node out of the cluster to perform a memory test. What is unusual though is that we have had the same problem on another host in the cluster since we did the updates last week. Please let me know if there are any other things I can check and confirm or...

The only indication of errors found on the Qemu KVMs that are affected is that the Applications are being terminated like this : mysqld got signal 11 Another application : siginfo: si_signo: 11 (SIGSEGV), si_code: 1 (SEGV_MAPERR), si_addr: 0x00007f9bf0138080 The above is the only information...

Thanks for the information, as far as we can see this feature was not present on the Host with the Previous Version we were running.We have disabled The Balloon Memory feature until the dust settles/ We find the root cause of the applications being killed. Below is the output of one of the...

Update original Post with a screenshot of the Ballooning Ram setting.

Hi dcsapak, This is only affecting the qemu kvm guests. Thank you for the information regarding the Ballooning. Regards, Joe

2 Issues experienced with LVM guests on Proxmox 4.4.1 Since updating using the Subscription Repository. 1.) On some of our Ubuntu 14.04 LTS Guests we have been finding processes being stopped without warning or any information being logged by both the host and the guest. Checked the syslog on...