On 09/21/2017 03:19 AM, Maged Mokhtar wrote:
On 2017-09-21 10:01, Dietmar Rieder wrote:
Hi,
I'm in the same situation (NVMEs, SSDs, SAS HDDs). I asked the same
questions to myself.
For now I decided to use the NVMEs as wal and db devices for the SAS
HDDs and on the SSDs I colocate wal and d
On 09/21/2017 10:19 AM, Maged Mokhtar wrote:
> On 2017-09-21 10:01, Dietmar Rieder wrote:
>
>> Hi,
>>
>> I'm in the same situation (NVMEs, SSDs, SAS HDDs). I asked the same
>> questions to myself.
>> For now I decided to use the NVMEs as wal and db devices for the SAS
>> HDDs and on the SSDs I col
I believe you should use only one big partition in case of one device per
OSD.
And in case of using additional device(s) for wal\db block.db size is set
to 1% of the main partition by default (at least according to ceph-disk
sources; it just gets bluestore_block_size, divides it by 100 and use it
On 2017-09-21 10:01, Dietmar Rieder wrote:
> Hi,
>
> I'm in the same situation (NVMEs, SSDs, SAS HDDs). I asked the same
> questions to myself.
> For now I decided to use the NVMEs as wal and db devices for the SAS
> HDDs and on the SSDs I colocate wal and db.
>
> However, I'm still wonderin ho
Hi,
This is the approach I've also taken.
As for sizing, I simply divided the nvme into a partition per HDD and
colocate the WAL/DB in that partition. My understanding is that
Bluestore will simply use the extra space for smaller reads/writes until
it reaches capacity when it then spools out
Hi,
I'm in the same situation (NVMEs, SSDs, SAS HDDs). I asked the same
questions to myself.
For now I decided to use the NVMEs as wal and db devices for the SAS
HDDs and on the SSDs I colocate wal and db.
However, I'm still wonderin how (to what size) and if I should change
the default sizes of
But for example, on the same server i have 3 disks technologies to deploy
pools, SSD, SAS and SATA.
The NVME were bought just thinking on the journal for SATA and SAS, since
journals for SSD were colocated.
But now, exactly the same scenario, should i trust the NVME for the SSD
pool ? are there th
Is there any guidance on the sizes for the WAL and DB devices when they
are separated to an SSD/NVMe? I understand that probably there isn't a
one size fits all number, but perhaps something as a function of
cluster/usage parameters like OSD size and usage pattern (amount of
writes, number/siz
On 21 September 2017 at 04:53, Maximiliano Venesio
wrote:
> Hi guys i'm reading different documents about bluestore, and it never
> recommends to use NVRAM to store the bluefs db, nevertheless the official
> documentation says that, is better to use the faster device to put the
> block.db in.
>
Hi guys i'm reading different documents about bluestore, and it never
recommends to use NVRAM to store the bluefs db, nevertheless the official
documentation says that, is better to use the faster device to put the
block.db in.
In my cluster i have NVRAM devices of 400GB, SSDs disks for high
perfo
10 matches
Mail list logo
