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  1. Alwin

    CEPH on node upgrade issue

    First get the network reliably working. Then the rest of the issue might fall in line.
  2. Alwin

    rbd-mirror support

    It can't be HA, since the two cluster don't know anything about each other.
  3. Alwin

    Upgrade 5.4 to 6 and NFS

    Code changes will be lost on update. Best is to mount the NFS share through fstab, add the storage with is_mountpoint and shared flags.
  4. Alwin

    is there a way to reduce the space taken by snapshots?

    LVM normally allocates blocks when you create a volume. LVM-thin pools instead allocate blocks when they are written. This behavior is called thin-provisioning, because volumes can be much larger than the physical available space. These writes are distributed across the data pool. Therefor each...
  5. Alwin

    Proxmox VE Ceph Benchmark 2018/02

    Octopus has a new caching mode, that is called write-around. It basically is a write-only cache and bypasses reads directly to the cluster. This is regardless of the OS inside the VM.
  6. Alwin

    Unable to mount NFS storage

    My patch will not be added since it doesn't yield a real benefit for the current implementation. There is no reliable way to find out what NFS version is run, besides trying to mount. And in that case lots of handling has to be done for stuck or interrupted mount requests, that goes way further...
  7. Alwin

    Ceph on single 10GB

    Well, have a look at our Ceph benchmark paper. https://forum.proxmox.com/threads/proxmox-ve-ceph-benchmark-2020-09-hyper-converged-with-nvme.76516/
  8. Alwin

    Proxmox Storage Disks how to.

    The zfs pool is meant for VM/CT disk storage. If you need a shared storage inside the VM/CT, then best use a NFS/SMB server.
  9. Alwin

    Backup dauert extrem lange

    iperf zeigt die Netzwerkbandbreite, aber nicht das Storage. Welche Hardware ist im Backup Server verbaut? Diese Werte sind nicht gerade toll.
  10. Alwin

    Ceph OSD slow OPS on all OSD's

    Can you elaborate a little bit more on the hardware used? And how you configured Ceph with it?
  11. Alwin

    Backup dauert extrem lange

    Das würdest du gleich im Dashboard sehen. Zudem, wie schnell kann der Backup Server den sichern? Client-seitig kannst das schon mal mit dem proxmox-backup-client testen. https://pbs.proxmox.com/docs/backup-client.html?highlight=benchmark#benchmarking
  12. Alwin

    ceph with one-copy block device

    To clarify, I am talking about Ceph's data redundancy not about the database.
  13. Alwin

    ceph with one-copy block device

    min_size 1 will only produce one copy for the PG in the pool. So any hardware malfunction on an OSD will lose the data.
  14. Alwin

    ceph with one-copy block device

    Has nothing to do with Proxmox VE per se. Ceph will do its thing. When the database is replicating to another backend, sitting on a different storage, then the redundancy is build into the DB level. But this only works if those DBs are running independently of one another (down to the storage...
  15. Alwin

    Backup dauert extrem lange

    Ja ist lang. Aber es kommt auch auf die Performance des Storage an, sowohl am Proxmox VE als auch am Backup Server. Welche Tasks laufen den auf dem Backup Server (Verify, GC)? EDIT: solved? Was war die Loesung?
  16. Alwin

    Setup für Ceph

    Ja eh, darum schreib ich's ja. ;) Die Latenz ist ausreichend gering bei 1 GbE. Na welche Links möchtest du redundant aufbauen? Ich nehme mal an, der Client Traffic möchte auch gerne redundant sein. Wäre ja auch blöd, wenn der Switch ausfällt und dann niemand mehr die Services benutzen kann...
  17. Alwin

    Centos 7 crashes on pve 5.4.78-1

    Can you try and install the kernels from Ubuntu (pve-kernel is based upon) between 5.4.73 and v5.4.78? This can narrow down the range of commits. https://kernel.ubuntu.com/~kernel-ppa/mainline/ Any issue with an newer kernel inside the VM? And what is the qm config of the VM?
  18. Alwin

    Problem with ceph cluster without quorum

    IO is paused when the min_size is not met. Since that is also 2, losing a copy will result in the halt of the cluster.
  19. Alwin

    Setup für Ceph

    Wo läuft den das Corosync im neuen Setup? Ich hoffe du hast da noch 1 GbE in der Tasche, da ich annehme, die 10 GbE sind auch in einem Bond.
  20. Alwin

    Shutdown Standby Node in Cluster, Any Impact?

    I can't stress enough, a VLAN is not a separate physical NIC port. Most important, to provide a stable quorum, the corosync traffic must not share its link. This sound to me, like the cluster is operating already in the >80% capacity range. On a node failure that capacity becomes even smaller...

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