rbd

  1. Proxmox external Ceph Disk Cache remommendation

    Hello, I searched this forum and google but i cannot find the final aswer.. We have a Proxmox cluster with a remote Ceph Luminous cluster. I see i get muge faster writes with Cache=writeback in the disk options in Proxmox, (random 4k up to 16x faster and Seq 10x faster) then with cache=none...
  2. [SOLVED] Migrate instance from openstack to proxmox with ceph storage backend

    Hi all, We are using openstack for most of our production instances with ceph storage backend. Recently we added additional hardware and setup Proxmox v6 and attached it to the same ceph storage cluster With the ceph storage integration we tested couple of instance and it works perfectly fine...
  3. [SOLVED] Starting qm fails with "got timeout"

    Hi, I have defined a storage of type "RBD" with only SSD drives connected to the relevant pool. All RBDs are available: root@ld3955:~# rbd ls -l ssd [25/1974]NAME SIZE PARENT FMT PROT LOCK vm-100-disk-0 1 MiB...
  4. elurex

    Ceph rbd error - sysfs write failed

    I am running PVE 6.0 and on this pve node, I have already started 2 vm with rbd disks to my ceph storage, However, sometime if I need to start third VM using rbd disk, PVE will error with following msg. It only can be solve if I reboot the pve node and then I can start 3 VM or more using rbd...
  5. Network File Sharing; permissions/UID/GID

    Hi everyone, I've run into a particular issue. I have a ClearOS VM in Proxmox acting as a domain controller with roaming profiles for some Windows PCs. I have a 3TB disk in the Proxmox machine that I'd like to share to the ClearOS VM and other VMs in the future. At the moment I'm exporting the...
  6. [SOLVED] Kubernetes - Ceph storage not mounting

    Hello guys, I am trying to use a persistent volume claim dynamically after defining a storage class to use Ceph Storage on a Proxmox VE 6.0-4 one node cluster. The persistent volume gets created successfully on ceph storage, but pods are unable to mount it. It throws below error. I am not sure...
  7. is it possible to auto trim for lxc disks?

    I have a cluster that has relatively heavy IO and consequently free space on the ceph storage is constantly constrained. I'm finding myself performing fstrim on a more and more frequent interval. Is there a way to auto trim a disk for an lxc container?
  8. Cannot connect to ceph after install

    Fresh single node install currently, with the intent to add 2 more nodes later that will use the Ceph storage from the first node. I installed the first node and installed ceph. I have 2 virtual bridges - vmbr0, 10.0.1.2/16 - general network - vmbr3, 10.10.10.2/24 - ceph network I...
  9. QemuServer.pm subroutines are not called under GUI?

    There is an Proxmox VE 5.3-11 server running several VM's. Disk images are stored on Ceph RBD. I modified "print_drivedevice_full" subroutine in /usr/share/perl5/PVE/QemuServer.pm for RBD tuning as described in https://pve.proxmox.com/pipermail/pve-devel/2018-June/032787.html Here is my patch...
  10. RBD storage 100% full

    Hello! I have successfully setup a PVE cluster with Ceph. After creating ceph pools and related RBD storage I moved the VM's drive to this newly created RBD storage. Due to some issues I needed to reboot all cluster nodes one after the other. Since then the PVE storage reports that all RBD is...
  11. ceph rbd slow down read/write

    Summary: pve-manager/5.3-5/97ae681d (running kernel: 4.15.18-9-pve) ceph version 12.2.8 (6f01265ca03a6b9d7f3b7f759d8894bb9dbb6840) luminous (stable) 4 nodes (per node: 4 nvme ssd & 2 sas ssd, bluestore) + 1 node with 4 sata ssd interconnect - 2x 10Gbps Created pool (512 PGs, replicated 3/2) on...
  12. RBD hangs with remote Ceph OSDs

    Hi there, I am running a 2-node Proxmox-Cluster and mounted RBD images on a remote Ceph cluster (latest Mimic release). Currently we are using the RBD image mount as backup storage for our VMs (mounted in /var/lib/backup). It all works fine unless an OSD or an OSD-Host (we have 3, each...
  13. Problems resizing rbd

    Just noticed this on one of my clusters; disk resize is failing with the following error message: Resizing image: 100% complete...done. mount.nfs: Failed to resolve server rbd: Name or service not known Failed to update the container's filesystem: command 'unshare -m -- sh -c 'mount...
  14. Problem with RBD on Ceph IPv6 external cluster

    Hi all, So I have two external Ceph clusters - one is using IPv4 and the other is using IPv6. When I'm using IPv4 cluster, the dashborad shows status and content of RBD and I have no problem creating new images for VMs. But when I try to configure storage information about IPv6 cluster, I get...
  15. Why is storage type rbd only for Disk-Image + Container

    Hello! Can you please share some information why storage type rbd is only availabel for Disk-Image and Container? I would prefer to dump a backup to another rbd. THX
  16. [SOLVED] Mapping image fails with error: rbd: sysfs write failed

    Hi, I have created a pool + image using this commands: rbd create --size 500G backup/gbs Then I modified the features: rbd feature disable backup/gbs exclusive-lock object-map fast-diff deep-flatten Latest step was to create a client to get access to the cluster: ceph auth get-or-create...
  17. [SOLVED] ceph trouble with non-standard object size

    Hi Community, to create a rbd image of 1T with an object size of 16K is easy. I did it like this: rbd create -s 1T --object-size 16K --image-feature layering --image-feature exclusive-lock --image-feature object-map --image-feature fast-diff --image-feature deep-flatten -p Poolname vm-222-disk-4...
  18. get nodes/$node/storage showing 0 byte for ceph pool

    I have this intermittent problem with storage returning 0 values for a specific rbd pool. Its only happening on one cluster, and there doesnt seem to be a corrolation to which node context is being called...
  19. Mounting an existing RBD image

    Recently I had to re-install Proxmox on my SSD's since replication is not supported in LVM, had to make "sort of a backup" of some files from a container that are around 250GB. To achieve that I mounted a disk using ceph storage, transferred the files to the storage, unmounted the disk...
  20. adventures with snapshots

    I have a new problem (well, it could be old and I just noticed it.) I have a number of containers that show any number of snapshots but when I look at the disk those snapshots dont exist. Example: pvesh get /nodes/sky12/lxc/16980/snapshot 200 OK [ { "description" : "Automatic snapshot...

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