Hola Jorge,
El 19/5/22 a las 9:36, Jorge JP escribió:
Hello Anthony,
I need make this because can't add new SSD disks in the node but these are not detected by the disk controller. We have two disk controller for can have 12 disks.
My idea is change one drive and test it. If doesn't work only lost 1 drive.
Ceph are installe directly in the machine and osd are created as bluestore. Are used for rbd. We used Proxmox for creating kvm machines.
So one of the controllers does not detect SSD disks, but the other does?
This might be a config problem, you may need to mark disk as passthrough
in controller BIOS/CLI utility. Some controllers can't do this; if
that's the case you may have to create a RAID0 on that SSD disk.
What controller(s) model(s)?
Cheers
A greeting.
________________________________
De: Anthony D'Atri<anthony.datri@xxxxxxxxx>
Enviado: miércoles, 18 de mayo de 2022 19:17
Para: Jorge JP<jorgejp@xxxxxxxxxx>
Cc:ceph-users@xxxxxxx <ceph-users@xxxxxxx>
Asunto: Re: Re: Best way to change disk in controller disk without affect cluster
First question: why do you want to do this?
There are some deployment scenarios in which moving the drives will Just Work, and others in which it won’t. If you try, I suggest shutting the system down all the way, exchanging just two drives, then powering back on — and see if all is well before doing all.
On which Ceph release were these OSDs deployed? Containerized? Are you using ceph-disk or ceph-volume? LVM? Colocated journal/DB/WAL, or on a seperate device?
Try `ls -l /var/lib/ceph/someosd` or whatever you have, look for symlinks that reference device paths that may be stale if drives are swapped.
Hello,
Have I check same global flag for this operation?
Thanks!
________________________________
De: Stefan Kooman<stefan@xxxxxx>
Enviado: miércoles, 18 de mayo de 2022 14:13
Para: Jorge JP<jorgejp@xxxxxxxxxx>
Asunto: Re: Best way to change disk in controller disk without affect cluster
On 5/18/22 13:06, Jorge JP wrote:
Hello!
I have a cluster ceph with 6 nodes with 6 HDD disks in each one. The status of my cluster is OK and the pool 45.25% (95.55 TB of 211.14 TB). I don't have any problem.
I want change the position of a various disks in the disk controller of some nodes and I don't know what is the way.
- Stop osd and move the disk of position (hotplug).
- Reweight osd to 0 and move the pgs to other osds, stop osd and change position
I think first option is ok, the data not deleted and when I will changed the disk the server recognised again and I will can start osd without problems.
Order of the disks should not matter. First option is fine.
Gr. Stefan
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