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items: OpenVZ7 can't snapshot/suspend a cPanel VE
items: Re: OpenVZ7 can't snapshot/suspend a cPanel VE

OpenVZ7 can't snapshot/suspend a cPanel VE
type: item
description: I recently deployed a couple of new OVZ7 hostnodes, we are looking to transition from older OVZ to OVZ7. We have many cPanel servers on older OVZ hostnodes. To test OVZ7 I moved a cPanel server from old to new using the ovztransfer.sh script as per the documentation. The move seemed to go ok and the server worked, however I found that after it was moved I could not snapshot the container or perform any operation that requires the server to be snapped/checkpointed. I figured this was a one off problem and more than likely related to a botched move using the ovztransfer.sh script. So instead I decided to build an entirely new VE on the OVZ7 hostnode. A brand new Centos7 install with a new fresh install of the latest version of cPanel. After I had that VE up and running I migrated cPanel users from source server to new target server using typical cPanel migration (transfer tools). After the user data was migrated I attempted to snapshot/suspend the new container and it is again failing. So now I know for sure the problem is not related to a botched move or anything specifically regarding the ovztransfer.sh script. The fact that I cannot reliably snapshot/checkpoint a cPanel container under OVZ7 pretty much puts me at a stand still in terms of using OVZ7 in a production environment. Here are some relevant details: Hostnode: Virtuozzo Linux release 7.2 / Linux 3.10.0-327.36.1.vz7.18.7 VE: CentOS Linux release 7.2.1511 (Core) - Running a brand new install of the latest version of cPanel with about ~600 active users recently migrated to it using cPanel transfer tool / ~250GB of data. # prlctl snapshot 1035 Creating the snapshot... PRL_ERR_VZCTL_OPERATION_FAILED (Details: Failed to checkpoint the Container All dump files and logs were saved to /vz/private/1035/dump/{ce2b2c58-00ac-4e2f-b4da-e0a0dc594ff4}.fail Failed tp dump the Container, status pipe unexpectedly closed Failed to dump Container Failed to resume Container Failed to create snapshot ) Failed to create the snaps…
creator: jfall
date: 2016-10-28T13:23:12-00:00

Re: OpenVZ7 can't snapshot/suspend a cPanel VE
type: item
description: Are you sure this is related to cPanel? Can you chkpoint a non-cPanel container on OVZ7? Have you filed a bug report? I can tell you there was a bug in a recent OpenVZ Legacy kernel update that broke restore after reboot but they got that fixed after it was reported. Chances are it is just a bug that needs to be fixed once they know it is there.
creator: dowdle
date: 2016-10-28T15:41:08-00:00

Re: OpenVZ7 can't snapshot/suspend a cPanel VE
type: item
description: No, not 100% sure it's related to cPanel. I do have another cPanel VM on the same hostnode that I can snapshot. Where is the recommended place to submit a bug report?
creator: jfall
date: 2016-10-28T16:49:22-00:00

Re: OpenVZ7 can't snapshot/suspend a cPanel VE
type: item
description: Submit bug reports to https://bugs.openvz.org They have been fixing OpenVZ Legacy kernel bugs fairly quickly after reports come in so good luck with yours.
creator: dowdle
date: 2016-10-28T18:06:56-00:00

Re: OpenVZ7 can't snapshot/suspend a cPanel VE
type: item
description: Hi, thank you for reporting this here and in the jira: https://bugs.openvz.org/browse/OVZ-6824. Let's investigate and track the status of this issue in that bug. Hope the issue is simple and can be fixed soon.
creator: khorenko
date: 2016-10-29T09:09:29-00:00