I have been getting up to speed on pve and started working with ceph yesterday. I buitl a single node (dell poweredge r720 with h200 in IT mode. 8 disks 3TB each 16rb ram just for testing). I created OSDs a ceph fs and ceph pool. I am trying to wipe out the config and rebuild ceph to get comfortable with all the various tasks I might need to do. I was able to remove OSDs, remove the ceph fs but when I try to detroy the ceph pool I get a message "checking storage 'main_pool' for RBD images. It has been stuck at that point since yesterday. Short of rebuilding the server, how can I remove the ceph pool?
New to pve, trying to delete ceph pool
- Thread starter bu2chlc
- Start date
reference:
https://www.mankier.com/8/rbd
ls [-l | --long] [pool-name]
Will list all rbd images listed in the rbd_directory object. With -l, also show snapshots, and use longer-format output including size, parent (if clone), format, etc.
rm image-spec
Delete an rbd image (including all data blocks). If the image has snapshots, this fails and nothing is deleted.
just follow the message...
and use this cli command
# rbd ls -l <name of the pool>
it will show you the remaining images and/or problems of the pool (see reference)
if you know what you are doing (pls. think twice) you may delete them step by step with
# rbd rm <name of the image> -p <name of the pool>
If the pool is empty, you should be able to delete it.
https://www.mankier.com/8/rbd
ls [-l | --long] [pool-name]
Will list all rbd images listed in the rbd_directory object. With -l, also show snapshots, and use longer-format output including size, parent (if clone), format, etc.
rm image-spec
Delete an rbd image (including all data blocks). If the image has snapshots, this fails and nothing is deleted.
just follow the message...
and use this cli command
# rbd ls -l <name of the pool>
it will show you the remaining images and/or problems of the pool (see reference)
if you know what you are doing (pls. think twice) you may delete them step by step with
# rbd rm <name of the image> -p <name of the pool>
If the pool is empty, you should be able to delete it.
is it safe to say that as I add nodes, the total storage for the entire datacenter will not increase? If I have 3 servers, each with 8 drives (3tb each) that will mean 24tb total per node, if I use the ceph size of 3, then that means 3 copies of my data will be stored which means I will only get 1/3 of my total storage capacity (about 7-8tb). If I have 3 servers, does that mean each server will contain those 3 copies, effectively giving each server those same 3 copies, and (mostly) exact copies of that 7tb of data? Trying to wrap my head around all the concepts behind ceph.
This depends on your configuration:
Please read the following document: https://pve.proxmox.com/wiki/Deploy_Hyper-Converged_Ceph_Cluster
To better understand the concepts, you may refer to: Mastering Proxmox - Third Edition: Build virtualized environments using the Proxmox VE hypervisor, 2017, Wasim Ahmed (Autor)
I have a Ceph pool in my datacenter and master node that I am unable to delete even though I have uninstalled and purged ceph on all my nodes. Could someone please tell me how to get rid of the pool from the WebGUI?
I think you should create a new post. Adding a comment to my post won't get much attention. Not sure why you made that choice.