Hello,

Simply the model of disk not is detected by controller disk. I tested in other 
nodes and this model not detected. So I need change the position of SATA disk 
and have free slot to ssd. Not is problem of passthrough or config. Thanks!

Cheers
________________________________
De: Eneko Lacunza <elacu...@binovo.es>
Enviado: jueves, 19 de mayo de 2022 16:34
Para: ceph-users@ceph.io <ceph-users@ceph.io>
Asunto: [ceph-users] Re: Best way to change disk in controller disk without 
affect cluster

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.da...@gmail.com>
> Enviado: miércoles, 18 de mayo de 2022 19:17
> Para: Jorge JP<jorg...@outlook.es>
> Cc:ceph-users@ceph.io  <ceph-users@ceph.io>
> Asunto: Re: [ceph-users] 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<ste...@bit.nl>
>> Enviado: miércoles, 18 de mayo de 2022 14:13
>> Para: Jorge JP<jorg...@outlook.es>
>> Asunto: Re: [ceph-users] 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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Eneko Lacunza
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Binovo IT Human Project

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