High Wait IO after and Load Average upgrade to Proxmox 4

I'm a Systems Architect, and just so we're clear, the chances of losing data by disabling write barriers are close to none. You can forcefully terminate a KVM/LXC/what-have-you upmpteen hundred times before you'll see a barrier related data loss. Personally, I haven't come across one that wasn't related to a different pre-existing issue. Ext3 has barriers disabled by default, however ext4 has them enabled. As for daemons and noatime, that's also pretty unlikely as it's a horrible way to check for states. Using noatime on cPanel, and Ubuntu LAMP stacks has no consequences, only performance improvements. It's a production box, so testing the differences isn't feasible. You can go ahead and let me know the differences :)
 
The '/var/lib/vz' reference was in regards to the pve lv on the host side. The changes were made to the mount options set in /etc/fstab.
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!