DRBD version 9.2.5, but version 9.2.7 (or higher) is required

[Zsolt Baji]

Hello Gabor, thank You for answare.

You say mixing of storage pools, but I use only ZFS (thin and not thin
provisioned). Here is an example.
+-------------------------------------------------------------------------------------------------------------------------------------------+
| StoragePool          | Node    | Driver   | PoolName | FreeCapacity |
TotalCapacity | CanSnapshots | State | SharedName                   |
|===========================================================================================================================================|
| DfltDisklessStorPool | drbd-03 | DISKLESS |          |              |
          | False        | Ok    | drbd-03;DfltDisklessStorPool |
| DfltDisklessStorPool | drbd-04 | DISKLESS |          |              |
          | False        | Ok    | drbd-04;DfltDisklessStorPool |
| DfltDisklessStorPool | drbd-05 | DISKLESS |          |              |
          | False        | Ok    | drbd-05;DfltDisklessStorPool |
| DfltDisklessStorPool | drbd-06 | DISKLESS |          |              |
          | False        | Ok    | drbd-06;DfltDisklessStorPool |
| HDDPool              | drbd-03 | ZFS_THIN | HDDPool  |   XXX.XX XiB |
 XXX.XX XiB | True         | Ok    | drbd-03;HDDPool              |
| HDDPool              | drbd-04 | ZFS_THIN | HDDPool  |   XXX.XX XiB |
 XXX.XX XiB | True         | Ok    | drbd-04;HDDPool              |
| HDDPool              | drbd-05 | ZFS      | HDDPool  |   XXX.XX XiB |
 XXX.XX XiB | True         | Ok    | drbd-05;HDDPool              |
| HDDPool              | drbd-06 | ZFS      | HDDPool  |   XXX.XX XiB |
 XXX.XX XiB | True         | Ok    | drbd-06;HDDPool              |
| SSDPool              | drbd-03 | ZFS_THIN | SSDPool  |   XXX.XX XiB |
 XXX.XX XiB | True         | Ok    | drbd-03;SSDPool              |
| SSDPool              | drbd-04 | ZFS_THIN | SSDPool  |   XXX.XX XiB |
 XXX.XX XiB | True         | Ok    | drbd-04;SSDPool              |
| SSDPool              | drbd-05 | ZFS_THIN | SSDPool  |   XXX.XX XiB |
 XXX.XX XiB | True         | Ok    | drbd-05;SSDPool              |
| SSDPool              | drbd-06 | ZFS_THIN | SSDPool  |   XXX.XX XiB |
 XXX.XX XiB | True         | Ok    | drbd-06;SSDPool              |
+-------------------------------------------------------------------------------------------------------------------------------------------+



THis mixing is'nt enabled too?

On Tue, Jan 30, 2024 at 4:15 PM Gábor Hernádi <gabor.hernadi at linbit.com>
wrote:

> Hello!
>
> I have added an new node to cluster today (fresh ubuntu installation.
>> After successfully setup I want to share an resource on it (extend
>> linstor_db resource with one more node), but when I start it, I get error
>> message
>>    Node: 'drbd-05' has DRBD version 9.2.5, but version 9.2.7 (or higher)
>> is required
>>
>
> LINSTOR is usually fine with a DRBD version >= 9.0.0. The only feature
> that requires the most current version (9.2.7 or 9.1.18) is when you want
> to mix storage pools. Most commonly that is achieved by mixing ZFS and LVM
> storage pools.
> If you want to do that, you will need to upgrade DRBD.
>
>
>> But in some time from one node the linstor_db resource is removed (I
>> don't delete it, controller do it). I try to add to this node again the
>> resource but always get identical error.
>>
>
> There is a "BalanceTask" where the controller tries to adjust the
> deployed-resource-count to the configured place-count from the
> corresponding resource-group.
> That means if your resource-group (RG) has a place-count of 2 configured,
> and you have deployed your 3rd linstor_db resource, LINSTOR will
> automatically (after a while) delete one "unnecessary" resource.
> If you do want to have your linstor_db resource 3 (or more) times
> replicated, you could create a new RG, move the linstor_db
> resource-definition into the new RG and configure the new RG with a
> --place-count 3 for example.
> I suggest using a new RG, since simply modifying the --place-count of an
> existing RG will trigger lots of resource-creations since a lot of
> resource-definition will "lack" a resource.
>
>
>> The problem that I don't known what will be happend if I upgrade drbd
>> kernel modul to new version and restart the node (all nodes), Do linstor
>> remove other resources from nodes? The problem is that not only the
>> resource config is removed, a zfs volume too.
>>
>
> Although LINSTOR will indeed delete the .res files (briefly before they
> get regenerated), LINSTOR will however NOT `drbdadm down` the DRBD devices.
> So restarting LINSTOR will not affect any running DRBD.
>
>
> Hope that helps
>
> Best regards,
> Gabor
>
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