Dear Strahil,
Thank you very much for pointing me to the RedHat documentation. I wasn't aware
of it and it is much more detailed. I will have to read it carefully.
Now as I have a single disk (no RAID) based on that documentation I understand
that I should use a data alignment value of 256kB.
Best regards,
Mabi
------- Original Message -------
On Wednesday, June 7th, 2023 at 6:56 AM, Strahil Nikolov
<hunter86...@yahoo.com> wrote:
> Have you checked this page:
> https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.5/html/administration_guide/brick_configuration
> ?
>
> The alignment depends on the HW raid stripe unit size.
>
> Best Regards,
> Strahil Nikolov
>
>> On Tue, Jun 6, 2023 at 2:35, mabi
>> <m...@protonmail.ch> wrote:
>> Hello,
>>
>> I am preparing a brick as LVM thin volume for a test slave node using this
>> documentation:
>>
>> https://docs.gluster.org/en/main/Administrator-Guide/formatting-and-mounting-bricks/
>>
>> but I am confused regarding the right "--dataalignment" option to be used
>> for pvcreate. The documentation mentions the following under point 1:
>>
>> "Create a physical volume(PV) by using the pvcreate command. For example:
>>
>> pvcreate --dataalignment 128K /dev/sdb
>>
>> Here, /dev/sdb is a storage device. Use the correct dataalignment option
>> based on your device.
>>
>> Note: The device name and the alignment value will vary based on the device
>> you are using."
>>
>> As test disk for this brick I have an external USB 500GB SSD disk from
>> Samsung PSSD T7
>> (https://semiconductor.samsung.com/consumer-storage/portable-ssd/t7/) but my
>> question is where do I find the information on which alignment value I need
>> to use for this specific disk?
>>
>> Best regards,
>> Mabi
>> ________
>>
>> Community Meeting Calendar:
>>
>> Schedule -
>> Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC
>> Bridge: https://meet.google.com/cpu-eiue-hvk
>> Gluster-users mailing list
>> Gluster-users@gluster.org
>> https://lists.gluster.org/mailman/listinfo/gluster-users
________
Community Meeting Calendar:
Schedule -
Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC
Bridge: https://meet.google.com/cpu-eiue-hvk
Gluster-users mailing list
Gluster-users@gluster.org
https://lists.gluster.org/mailman/listinfo/gluster-users
