Search results

Hi dsh we've been running SSD in an enterprise production environment under above average loads and the drives have really been great so far. We don't use SATA only SAS eMLC and MLC drives in hardware equivalent to Raid 6. With the DRBD replication between hosts this is another mirror of the...

Forgot to mention zfs will slow things down and chew up more memory for little benefit. Personally the less layers to deal with the better. How’s the testing going ? “”Cheers G

It’s up to you if you wish to assign more than amount of real cores and sockets go for it. Just remember it will not perform optimally and you’ll see a lot of high cpu and think its stuck processes. One more time. Hyperthreading is multiple paths to the same cpu core 2 data paths 1 core so in...

That’s awesome news! Wonder if this can be marked as resolved? “”Cheers G

Hi TheJM Im from a VMware background so can help with their best practise for cores and sockets. A thread is not a core its just another data path to a core. VMware best practise should be equal number of sockets and real physical cores (not threads). If you only have 1 socket then the config...

Hi Alemiz also change the current 1 CPU 8 cores to 1 CPU socket 6 cores total: or 2 sockets 6 total (3 x 2) the VM will perform better once its up and running. let us know how you go with the network and VIRTIO storage changes. ""Cheers G

Best practise is to have cores equally spread across sockets. i.e. total physical cores 12 cores/ 2 sockets = max 6 cores per socket. total physical cores 24/ 2 sockets = 12 cores per socket etc This does not include hyper threading as those cores don't actually exist they are just additional...

Hi nununo NFS in my opinion is a better protocol than SMB 1 or 2 which is the default for a long time, but one draw back of NFS is that if the PVE initiator drops connection with NAS it will create queued up IO and eventually crash PVE trying to reconnect if there is a network issue. CIFS/...

HI RCD See below: Ok it sounds like you know what you would like to do. This could be achieved with a USB drive and USB pass through to the VM The only other way to have a scratch disk and attach to a VM is either as a virtual drive or over a file share from within another VM or external file...

Hi dsh My 2 cents. Ceph = object storage DRBD = 1:1 or 1:N replication DRBD Simple vs CEPH complicated. If Ceph breaks it could mean no data. If DRBD breaks it just stops replicating you can still use your data on 1 host while troubleshooting issues. CEPH support from ProxMox directly...

Hi all Keep things simple. If local PVE storage is SSD use it to run VM and application inside VM. Connect the NAS with CIFS share to PVE as a backup destination to backup the VM’s Backup VM > NAS share on a schedule Set backup compression to save space. Data lives in VM and VM is backed up -...

Agree with LnxBil I would also set virtio as the SCSI storage adaptor. Set storage cache to pass through The VM Kernel is panicking which can be a few things. How many phisical sockets does the server have? How many cores? How many cores and sockets does the VM have? More info and maybe a...

Hi JRshaw Have you checked the FW on the VM in PVE? Disable IP tables in the centos VM too. Make sure it’s disabled for testing as a troubleshooting steps. Have you set DNS in the /etc/resolve.conf If not you set a name server on the adaptor eth0 or in the above mentioned file. For testing add...

Hi RCD If you have external storage or can create another pool locally of slower disks that’s your best bet. Anything else is going to be a headache to manage. If you can create another local pool with slower drives for backup sweet. On this pool you can create a file server cantos vm and do...

Hi all Coming from a VMware background I’ve never heard of assigning threads as it’s emulation within the cpu for an additional data path. 2 x paths for data to travel on per core theoretically allowing parallel processing to happen. But the core still only processes one path at a time...

I still have a feeling the drop is happening due to high load during the backup cycle. Normally there is a iSCSI time out and if this is reached by the initiator the connection will drop and won't come back as there will be built up IO requests, hence why the reboot is required to reconnect...

Ok so what’s the free nas box being used for if there are no backups going to it? I’ve seen network connections drop when there is too much disk IO or load on the CPU. Are you running spinning disks or SSD locally? What is the nas box running spinning disk or ssd? How big is the network...

What’s using 192.168.1.66?

Hi dsh I agree with czechsys using Linbit drbd is a good option and can work with 2 or more hosts of various types so dont all need to be the same. We are currently speaking with Linbit our selves and should be testing DRBD and Linstore module by the end of this year. What’s your network...

Hi Joogser A few points if I may. 1. Your initial post excluded the primary hyperviser being used which is hyper-v, this is a major exclusion from the problem your asking to be solved. This is a ProxMox forum not hyper-v if you need help configuring hyper-v this this would be best asked on a...