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Questions tagged [ceph]

Ceph is a distributed object store and file system designed to provide excellent performance, reliability and scalability.

Ceph is a distributed object store and file system designed to provide excellent performance, reliability and scalability. Ceph is an project primarily developed by Inktank (a spin-off of , now acquired by .

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K8S ceph csi rbd how to create Persistent Volumes from Existing RBD images

I'm trying to test the recovery of exported rbd-images export image rbd export --export-format 2 -p ssd-k8s csi-vol-55355f44-eaee-11eb-9e68-6a05d299e4b1 /tmp/csi-vol-55355f44-eaee-11eb-9e68-6a05d299e4b1 Active watcher rbd status -p ssd-k8s …
Александр C
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How to know OpenStack volumes actual size in Ceph storage

I want to know how to get Openstack provisioned instance volumes actual size in Ceph storage. what Ceph operation should be used to get such info. e.g. we have a volume of 1 TB that only 10 GB consumed so Ceph will store only 10 GB and rest of the…
doubando
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What is a shadow ceph object? And how is it created?

when i run radosgw-admin gc list, i see some objects with oid like this ac7cb16a-c4d4-4e8e-a6ad-97898dc5af11.3801298515.76__shadow_.5zReEt5X65lTn5l8-XgFafxRhgJ6tYe_1 what is it? And is it dangerous to delete it?
Meysam Rahimi
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cephfs seems to have a problem with linux 5.11 kernels

Upgraded fedora33 lately and found my cephfs mounts won't work anymore. After hours of debugging and looking around, I realized a new kernel 5.11.X was installed. Before I had 5.10.X. Did reboot with 5.10 and everything was fine. To verify the…
mvh
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Can't create user for ceph dashboard

I'm trying to create a user for ceph dashboard with admin role. Version is Nautilus 14.2.19 and deployed with manuel installation. I've installed dashboard module, installed all dependencies and enabled it. My dashboard is reachable from the monitor…
Nyquillus
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Ceph limitations (number of buckets and number of users)

I want to know about these questions: maximum number of buckets in ceph cluster maximum number of users in radosgw thanks.
mohammad zare
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cannot clear OSD_TOO_MANY_REPAIRS on octopus@centos8

today my cluster suddenly complained about 38 scrub errors. ceph pg repair helped to fix the inconsistency, but ceph -s still reports a warning ceph -s cluster: id: 86bbd6c5-ae96-4c78-8a5e-50623f0ae524 health: HEALTH_WARN …
mvh
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Create a new /dev/sd{b,c,d} on WSL for Ceph

I'm trying to run Ceph on (micro)K8s which running on my Ubuntu WSL distory. OSD pods are not being created because there is no supported device is available (see logs below). Ceph is configured to UseAllDevices which you can see it searching for…
a11hard
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Replacing disk while retaining osd id

In a ceph cluster, how do we replace failed disks while keeping the osd id(s)? Here are the steps followed (unsuccessful): # 1 destroy the failed osd(s) for i in 38 41 44 47; do ceph osd destroy $i --yes-i-really-mean-it; done # 2 create the new…
John Karasev
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Rook ceph block storage on bare metal - how to export a file from a pod?

I'm trying to work out how to transfer a file from ceph block storage, e.g. a database backup. I've followed the example here: https://github.com/rook/rook/blob/master/Documentation/ceph-block.md so that I have Wordpress and mysql working on…
colebod209
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assistance with troubleshooting when creating a rook-ceph cluster on a single node

I know you shouldn't create a ceph cluster on a single node. But this is just a small private project and so I dont have the resources or need for a real cluster. But I want to get a cluster up and I have some issues. Currently my cluster is down…
Nils Malmberg
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Problem getting inventory from host in Ceph cluster

I have successfully installed Ceph(v15.2.6) cluster with cephadm tool on several vm-nodes (Centos7). On each vm-node a separate block device /dev/sdb has been configured as a dedicated ceph-device. Up to that moment all the ceph-activities looked…
alex007
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ceph fs mds stuck in `up:rejoin` state - `failed to open ino 0x101 err -116/0`

Ceph stuck in case of disk full, but after fixing, the cephfs mds stuck in rejoin state for a long time. Ceph -s truncated output: cluster: id: (deleted) health: HEALTH_WARN 1 filesystem is degraded services: mon: 6…
zitsen
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how to rejoin Mon and mgr Ceph to cluster

i have this situation and cand access to ceph dashboard.i haad 5 mon but 2 of them went down and one of them is the bootstrap mon node so that have mgr and I got this from that node. 2020-10-14T18:59:46.904+0330 7f9d2e8e9700 -1…
GKaveH
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ceph 15.2.4 -- authentication changes -- unable to reattach with kubernetes

Yesterday my teammates found a way to disable cephx authentication cluster wide (2 server cluster) in order to bypass issues that were preventing us from joining a 3rd server. Unfortunately they were uncertain which of the steps taken let to the…
new-ground
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