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Questions tagged [ceph]

Ceph is a free software storage platform designed to present object, block, and file storage from a single distributed computer cluster.

Ceph is a free software storage platform designed to present object, block, and file storage from a single distributed computer cluster. Ceph's main goals are to be completely distributed without a single point of failure, scalable to the exabyte level, and freely-available.

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Expanding/Growing OCFS2 forever

I have a kvm environment where a shared disk mounted by 2 VMs through rbd ceph. What I would like to know that in the future how is it possible to expand OCFS2 filesystem what I planning to use on top of it: LVM2 is not an option: "As of this…
pluto73
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KVM debian wheezy packages with ceph support

Does anybody know any packages out there for kvm which are compiled with RBD support? I have these installed right now: ii kvm 1:1.1.2+dfsg-6+deb7u8 amd64 dummy transitional package from kvm to…
mongo533
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Logstash matching ceph client and server separation

So I have a fresh logstash install and I am trying to deploy logstash to get a handle on the logs. I am going through and will eventually segment the logstash filters based on subsystem and currently I am working on parsing osd logs. Here is a…
Lookcrabs
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Simple scheme for backup virtual machine, which drawback of simple DD?

We've been struggling to create the consistent scheme for backup of KVM virtual machines under Proxmox control and Ceph as storage, but still quite often during the vzdump with a snapshot the virtual machine is going down 120: dic 05 04:51:47 INFO:…
Igor
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File system benchmark that generates I/O from distribution of file sizes

I am looking for a file system benchmarking tool to test CephFS. This benchmarking tool has to: Generate a set of files (call it fileset) following a particular distribution, e.g., gamma, empirical, non-archival, or fitted whatever, etc. Based on…
shoosah
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Object storage: when to choose OpenStack (Swift) vs. Ceph

Swift (OpenStack) and Ceph are both open source projects that implement object storage. What are the factors to consider when trying to decide which one to deploy? Under what scenarios would you choose Swift, and what scenarios would you choose…
Lorin Hochstein
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extract openstack instances' volume from ceph

I have an OpenStack-kolla environment with the Ceph backend. I've configured my cinder backend with NFS. I can create a Backup with Cinder from all instances and store them on NFS. In this case, I don't want to change the Cinder backend to the Ceph…
sina
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Upgrade OS Bionic to Focal which includes Openstack and Ceph cluster

So i have openstack and ceph cluster with 3 controllers and 3 computes. This is the information about my cluster : OS : ubuntu bionic Openstack kolla-ansible : Ussuri 10.4.0 Ceph ceph-ansible : Octopus 15.2.17 My goal is i want to upgrade my…
Adelia Nurlina
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kolla-ansible openstack bootstrap-servers failed on enabling ceph apt repository (ubuntu 22.04)

This is to deploy the recent kolla-ansible openstack. The problem happens since last week. I retested it on a good environment successfully deployed on 7/14/2023 and got bootstrap-servers failed this time. The environments use Ubuntu 22.04 and…
user1039217
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Ceph's failure to automount after network failure

I'm having some problems with the mounting of a ceph-cluster on debian machines, don't know if I'm doing something wrong, if it's a version problem or anything else. I'm using the ceph cluster from OVH, and then mounting with fstab on around 20 vm's…
Tio
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ceph - is a drive mapping change recoverable /dev/sdi /dev/sdj

I was testing drive hot plugging on my server, and unplugged one of the drives, then plugged it back in. Though, when plugged back in the drive letter changed from /dev/sdj to /dev/sdl. Now ceph will not start the osd daemon, and I am wondering if…
donkeyx
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Ceph File system OS installation

I'm building a Ceph cluster. I've been reading for months and I can't find this information. I am going to use Ubuntu 20.04 What is the file system that I have to use for the installation of the Ubuntu OS? Only for the operating system, not for the…
Fernando Grubicy
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ceph "permission denied" when adding storage OSD

I just setup three storage nodes for ceph in a qemu/kvm environment to learn about it. OS is Ubuntu Server 22.04 LTS. The ceph and ceph-common packages are from standard repos. I followed the guidelines on the ceph website. I set up one vm and…
user5717448
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OSD stuck in booting with messenger component log: Operation not permitted error

After rebooting k8s nodes, OSD didn't join the cluster with errors related to authentication. I have added them to auth list and that error disappears. Now OSD nodes join the cluster but they don't show as up and pgs don't show up in ceph -s. I…
Ahmad Ahmadi
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Ceph - reset ceph osd_max_backfills to default value

I am attempting to reset some backfill settings to defaults after having changed them to slow down the backfilling. I am struggling to work out how to do it though: This example shows that the backfill is still set to "override", and I would like it…
donkeyx
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