Search results

  1. Which VM CPU model to choose to have same CPU id string even after PVE upgrade?

    Hello, I used to run KVM VM with some licensed software in it (there is Debian and the software run in it). When the VM was setup the CPU was set to kvm64 and never changed. The software itself used to bind its license to hardware list of the PC (that is, VM), and the problem is, if I somehow...
  2. PVE 6.1 (ZFS setup) keep killing disks

    Hello, I rented a blade server with two 3.5" 4 Tb SATA disks, added both as ZFS mirror. No problem was seen initially, but soon I got one of drives failed (physically), so hosting company replaced it promptly and I have pool resilvered. After 3 days second disk died physically, and again I have...
  3. 1 SSD and 2 HDD - best storage setup?

    If I have only this disks in server: 1 x NVME SSD and 2 x SATA HDDs, and no RAID card, what will be the best setup maximizing VM (no containers, only VMs) storage and server speed? 1. HDDs are in mirror (seems to be md-based one), and SSD as single disk for VMs (yes we'll do backups to HDD, and...
  4. PVE 5.2 on ZFS, use as plain disk only?

    I got a freshly installed host under PVE 5.2 on two HDDs which are set up as ZFS RAID1. I used to use plain filesystem to store VMs disks so I have no plans to use rpool/data pool, so what if I remove its definition from storage.conf? I can then mount this pool (or delete it and create another...
  5. Cluster and https certs

    Looks like I found well-known mislogic which I wasn't aware of: I set up several hardware nodes independently on PVE 5.2, put it into DNS (let me call it host01.mydomain.com, host02.mydomain.com etc. for the example purpose) and even got LE certs to access it over https without warnings. That...
  6. PVE 5: VM on mounted zfs?

    In PVE 5.2 I can add say couple of HDDs as ZFS based mirror. Then the ZFS pool can me added as storage. But ZFS pool can be as well mounted as general disk. But say I added this way the ZFS pool as storage or added it as dir storage. How is the pros or contras to do both options? ZFS pool...
  7. Cluster just to allow migration

    I have several servers (nods), and would like to connect them under single management. It'll be very poor man setup and the single management should be only for migrating VMs at will (very rare case). Right now, these nodes are set up independent and each hosts very specific VMs on it (very few...
  8. LSI 2208 and TRIM - live without?

    Here is setup I try to do: I have LSI 2208 raid controller with cache and bbu, and 4 SSD disks connected to it. I can not change the firmware, so HBA is not an option and I also don't want to loose cache and bbu. I would like to use RAID10 setup out of these 4 ssds. The probles is that 2208 not...
  9. SSDs: volume with h/w RAID or ZFS?

    Keep at my hands nice modern server with 4 SSDs on board, I still can't find the better way to utilize it. I can use built-in h/w RAID controller (LSI card, with cache and BBU, not sure for model) and build, say, RAID10 out of these disks. Or I can export these disks as 4 independent volumes...
  10. Install with ext3/4 over lvm from iso?

    I believe it was up to 3.x that PVE setup from iso results in ext3 filesystem over lvm. Newer days we get lvm storage which may be nicer, but it is hard to copy VM disks by simple copy its disk files. So the question is, is there any easy way to install 5.1 from iso the way that it was long...
  11. CPU to use for VM (kvm64 vs host type)?

    As I create new VM for web site I'm in doubt if I should use kvm64 vs host type of CPU for VM. Choose host should looks like can give me more real cpu power (but I limited by real physical cores number), while kvm64 can be set to as high as 128, and (as I can imagine) will share the same...
  12. Install PVE on single drive with ZFS?

    I do like ZFS and PVE approach to use native ZFS features. Now I need to set up small server with bing RAM (32 Gb) and with single big drive, but I can't install PVE 5.0 on it with ZFS. It say it needs two drives to set up ZFS. Are there any way to install PVE on single drive with ZFS using PVE...
  13. ZFS: VM disk as file vs VM disk in ZFS pool

    I just installed PVE 5.0 on zfs to play with (used to use LVM before this moment), and I'm in doubt now: if I should create VM disks on zfspool pool (this will not be visible as e.g. *.raw file), or I can create VM disks as files under /var/lib/vz/images/<VM-number>/. Latter way is easier to...
  14. Install PVE 4.2 over IPMI fails due to graphic mode

    I used to install various versions (since 1.8) of PVE over IPMI to number of servers and everything was fine every time I need that. But this time I need to install PVE 4.2 to some a bit outdated server over IPMI. The problem is that IPMI won't show me the some graphics mode that PVE install...
  15. Create PVE user to restart Vms only

    Hello, I try to figure out if it is possible to create a Proxmox (pve, not system) user that can login over web, check the state of the KVM VM (but can not change the machine's properties) and also can stop/start/reset the VM. The idea behind is that we have night shift person who's on duty to...
  16. Discard for SSD with LVM over MD?

    I added two SSD in my server to have speedy partition to store VM images. I've create mirror over that two SSD with mdadm, then create LVM over that mirror (so I can afford to do snapshot backup of VM). Then I've mkfs.ext4-ted over that LVM. Now I wonder: what if I set or not set 'discard'...
  17. How to better use disks on new setup of PVE 4.1?

    Hello, For years I lived with the idea that the only underling storage for PVE should be hardware-backed array of disks, which can self-heal, self-cached, and which is guaranteed to be always-in-good-shape. But now I see recent PVE versions are with ZFS out of box (but as I played with some of...
  18. On backup run a command before and after snapshot to lock mysql db inside VM

    Hello, may I please ask for a little advice? I have a KVM VM (Centos 7 on ext4 fs, no LVM inside VM) with mysql server running inside. I'd like to create whole host backup (via snapshot method to minimize mysql server downtime) but what I afraid of, when I do snapshot of VM the fs consistency...
  19. Possible to create quick copy of KVM VM by using snapshot?

    Recently I faced situation when I needed to create exact copy of running VM for maybe 5 minutes to test some setting in it. The common way was to create the backup via snapshot, then create new machine and "restore" this new VM from recently created backup. It is quite easy to understand but it...

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE 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 your own in 60 seconds.

Buy now!