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  1. Scaling beyond single server. Suggestion wanted.

    Hi Velocity08, Main VM in our setup is ERP database. I have an irrational fear about bit rot. Running it on ZFS gives me some confidence. I've never trusted Hardware/Software RAID. I have not made any progress yet on lab system as it has limited memory and had some problem due to lack of...
  2. Scaling beyond single server. Suggestion wanted.

    Thank you. After reading some documentation, I have finally configured DRBD9 on ZFS with Proxmox 6 on two nodes in lab. Now my only concern is it's not officially supported by Proxmox and possibly very few user-base compared to Ceph.
  3. [SOLVED] 2 Node ZFS replication not using link0

    Update: Live migration and storage replication network is needs to be configured separately and it's not related to corosync network.
  4. [SOLVED] 2 Node ZFS replication not using link0

    I thought link0 would be used "storage replication" and migration. I set 10.0.0.x network as only connection for corosync but when I migrate VMs or create "storage replication", it still goes through 192.168.1.x network. How can I make migration, storage replication go through specific...
  5. Scaling beyond single server. Suggestion wanted.

    I have tested in lab environment today. It works as expected, however most burdensome things is manually migrating every vm/lxc as guided here.
  6. [SOLVED] 2 Node ZFS replication not using link0

    I have configured two node cluster using web gui. I set up replication from pve1 -> pve2. In cluster config I setup link0 as main link, however when I test it's using link1. I downloaded 500mb file on virtual machine in pve1 and measured bandwith using iftop. It's definitely using link1...
  7. Proxmox VE Ceph Benchmark 2018/02

    I'm interested in 3 Node Mesh network setup. How do you connect? Do you bond two nic for each node? or give separate IP?
  8. Scaling beyond single server. Suggestion wanted.

    Thank you. So I am not going to mix nvme + sata SSD in CEPH. That rules out option 1. I have not read about drbd9. Thanks for suggesting it seems very good option for realtime HA. I will read further about it. What do you mean by "never get to 10 min downtime". Do you mean I will almost...
  9. Scaling beyond single server. Suggestion wanted.

    Hello, I have been running 1U Xeon e5 2620 v4 CPU with 4 Sata SSD(Adata SSD 1tb SSD, very slow for ZFS:( ) configured on ZFS mirrored stripe. It run well for me but it doesn't have enough IO for my VM needs. So I recently we purchased Amd Epyic 7351p with 8 NVME ssd (Intel P4510 1TB) to solve...
  10. Windows guest BSOD, no disk found

    I have windows guest and after power cut, My Windows guest doesn't boot and gives BSOD. Then it entered to recovery mode. When write "list disk" in diskpart, it says "there are no fixed disks to show" I have ZFS Mirrored Striped with ZIL without UPS. Is there way to fix this?
  11. Upgraded to SSD's, now getting extremely poor performance on containers

    Those consumer grade SSDs perform poorly when you use with ZFS. If you want ZFS use Intel Datacenter SSDs.
  12. Upgraded to SSD's, now getting extremely poor performance on containers

    This is expected. If you had local-lvm, you were using single disk. Now you are using ZFS which is slower but has many features such as redundancy.
  13. Server crashed: ACPI error

    Hello, My server crashed twice for last days. Last message is ACPI Error: AE_ERROR, While parsing command line (20181213/dbinput-1214) Is this message related to crash?
  14. How to enable "discard" option in Windows KVM.

    Thanks to you after updating I can enable "discard" option. Now that I enabled what's next step for windows 10 VM?
  15. How to enable "discard" option in Windows KVM.

    Hello, I have a windows 10 VM that I created about 3 years ago. I have allocated it single 2TB disk and uses about 40% of it. I can't select "Discard option" somehow. My host system runs 4x1tb SSD in ZFS (Striped Mirrored) which allows 2TB. My ZFS pool show over 95% usage and I would like...
  16. [SOLVED] Help with setting up 10 zfs disk

    Hello, At the moment I have 4 disk as follows: rpool mirror-0 disk-1 disk-2 mirror-1 disk-3 disk-4 Now that I need to add 6 devices I'm confused. Should I add 3 disk each to existing mirrors? or should I create another 3 mirror with each having 2 disks? What are pros and cons of...
  17. How to disable network time sync permanently

    Hello, I need to stop network time sync feature. Upon reboot it is being enabled.
  18. Adding 2 ssd for both slog and l2arc

    Thank you for your answer. It is synchronous. I am thinking using s3710 as SLOG would help consumer ssd's write performance. I do weekly monitor for ssd wear outs and do scrub. Anyway I decided go with aforementioned upgrade. Hopefully get better performance. I will post result whenever it's...
  19. Adding 2 ssd for both slog and l2arc

    Hello, I have a server with E5 2620 v4, 64GB ram and 4x1tb mushkin Reactor SSD (I know it's consumer grade but it's in ZFS striped mirrored, aka raid 10). Overall I'm happy with performance but I still see 5-15% IO delay during peak load. CPU usage always around 20-40% and RAM is 80-90% all the...
  20. Choosing best hardware for Proxmox

    Thanks for input guys. With current configuration i've disabled ZFS sync feature and fsync/s went to whopping 24000 (I know it's unsafe, just for the test). Apparently, I didn't feel 50x improvement nor at least 1.5x improvement. Like LnxBill I'd like to keep using zfs for to prevent from...


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