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What kind of throughput do you get inside the VM's?

How will does live migration and high availability between the nodes work?

How well did this setup work?

Agreed. The new kernel fixed the problem

I am quite curious, have you upgraded to Bluestore? And if so, what are your speeds like now?

I have seen some bad performance in the past where 512 emulation is used. Hence, I want to switch it and test to see what happens.

I haven't seen such an option in Proxmox.

https://www.ibm.com/developerworks/library/l-4kb-sector-disks/

I have noticed the same recently. Using IDE for Windows clients make them blazing fast, whereas VirtIO and SCSI disk drives are very very slow.

Hi, I tried this but got the following error: rbd: error opening default pool 'rbd' Ensure that the default pool has been created or specify an alternate pool name. root@virt1:~# more /etc/ceph/rbdmap # RbdDevice Parameters #poolname/imagename...

Hi, Does anyone know how to change the Logical Sector size of a CEPH OSD? I have searched the forums but cannot find a solution.

how would one do it?

@mateusz did you ever get to the bottom of your performance problem?

Hi, Is it possible to rename a CEPH OSD? ^Croot@virt3:~# ceph osd tree ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF -1 87.33948 root default -3 29.11316 host virt1 1 hdd 7.27829 osd.1 up 1.00000 1.00000 2 hdd 7.27829 osd.2 up...

We have a 500Mb wireless link to another office, about 4 KM away. ping times are about 2ms. But it's not the same 10Gbe storage network that we have for the CEPH storage.

I am curios, how would you configure CEPH, not to run slow, if the servers are in different datacenters like this?

I ran a straight ping between the host nodes, hence also aksing the OP what method he used for his measurements. I'll install and test with ioping quickly.

What latency are you referring to? Network latency between the servers? How did you measure the latency? In a similar setup, our latency on the storage network is 0.011ms average

Aha! So I can only run that command from the host node on which the OSD resides, not from any host node. Gotcha ;)

Thanx. How does Proxmox PIN the CPU cores?