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> LVM does write cache What do you mean when you say "LVM write cache"? > it never was "out of sync" What kind of VMs do you use on top? In case of Linux do any of them use swap actively?

Hello, Long time ago after when I found a guide how to configure Proxmox two node cluster + DRBD I was really happy. We only needed to nodes for online migration and quick recovery after hardware failure. I saw that as a solution that could be widely used. And it worked for a while. When I...

It looks weird. Try ping.

Excluding all drives of a particular machine from backup is a nice way to avoid wasting space on backup storage. This way is better than excluding by VM ID because ID doesn't belong to a VM and we can have a situation when a newly created machine is excluded from backup despite the fact we...

ACPI daemon is not installed in Proxmox by default as I remember.

I was also thinking about the third one :) True, however if I had to do this on a server in production I would do this very carefully because it is easy to make a mistake there.

> BTW: if you don't us the proxmox management over one vlan (also with assigned IP address) Option 2 is the favorite way. This way requires rebooting a host if you need to add/remove VLAN, and probably not only this host if you use migration. So I pefer the first one.

Contacts?

> If I extract the *.lzo file => then extract the *.vma file manually, the whole process takes only minutes, as you'd expect. Check "ps aux" when restoring and try the same command manually.

Software RAID is quite okay when it is used by one kernel (single OS or OpenVZ), however it is not so good with full virtualization because lack of writing cache. May be some tuning of MD can help but hardware RAID is always faster and safer in case of power failure.

Also try: if=/dev/zero of=testfile bs=1M count=10000 oflag=direct hdparm -tT /dev/yourdevice

Try dd if=/dev/zero of=testfile bs=1M count=10000. Keep in mind that software raid is not supported.

1. Remove HDD from VM, so it becomes "Unused". 2. Add unused HDD back to VM as a virtio (just double click on it). 3. Shutdown the machine and start again.

Try to run tcpdump on both interfaces at the same time and I guess I are going to be surprised.

I think this is not about Proxmox. Check your routing tables.

In order to use verson 7.1 you need to change dsm_sa_ipmi script and make it not to check some modules to be loaded because they are built-in. However I would recommend using the lates version of OMSA: http://linux.dell.com/repo/community/ubuntu/

What version of OpenManage are you installing?

My VMs hangs during "shutdown backup" if they no disks to backup but not excluded from backup task.

baskin, do you backup these VMs?

I would also add that "spread a word" is also important. Let's say 5% (that's just an example, I don't know the real numbers) buy support subscription. 5% from 1000 is 50, however from 10 000 it is 500...