And by the data disk I mean that I didn't specify a location for the DB
partition.
On Mon, Oct 22, 2018 at 4:06 PM David Turner <drakonst...@gmail.com> wrote:
> Track down where it says they point to? Does it match what you expect?
> It does for me. I have my DB on my data disk and my WAL on a separate NVMe.
>
> On Mon, Oct 22, 2018 at 3:21 PM Robert Stanford <rstanford8...@gmail.com>
> wrote:
>
>>
>> David - is it ensured that wal and db both live where the symlink
>> block.db points? I assumed that was a symlink for the db, but necessarily
>> for the wal, because it can live in a place different than the db.
>>
>> On Mon, Oct 22, 2018 at 2:18 PM David Turner <drakonst...@gmail.com>
>> wrote:
>>
>>> You can always just go to /var/lib/ceph/osd/ceph-{osd-num}/ and look at
>>> where the symlinks for block and block.wal point to.
>>>
>>> On Mon, Oct 22, 2018 at 12:29 PM Robert Stanford <
>>> rstanford8...@gmail.com> wrote:
>>>
>>>>
>>>> That's what they say, however I did exactly this and my cluster
>>>> utilization is higher than the total pool utilization by about the number
>>>> of OSDs * wal size. I want to verify that the wal is on the SSDs too but
>>>> I've asked here and no one seems to know a way to verify this. Do you?
>>>>
>>>> Thank you, R
>>>>
>>>> On Mon, Oct 22, 2018 at 5:22 AM Maged Mokhtar <mmokh...@petasan.org>
>>>> wrote:
>>>>
>>>>>
>>>>> If you specify a db on ssd and data on hdd and not explicitly specify
>>>>> a
>>>>> device for wal, wal will be placed on same ssd partition with db.
>>>>> Placing only wal on ssd or creating separate devices for wal and db
>>>>> are
>>>>> less common setups.
>>>>>
>>>>> /Maged
>>>>>
>>>>> On 22/10/18 09:03, Fyodor Ustinov wrote:
>>>>> > Hi!
>>>>> >
>>>>> > For sharing SSD between WAL and DB what should be placed on SSD? WAL
>>>>> or DB?
>>>>> >
>>>>> > ----- Original Message -----
>>>>> > From: "Maged Mokhtar" <mmokh...@petasan.org>
>>>>> > To: "ceph-users" <ceph-users@lists.ceph.com>
>>>>> > Sent: Saturday, 20 October, 2018 20:05:44
>>>>> > Subject: Re: [ceph-users] Drive for Wal and Db
>>>>> >
>>>>> > On 20/10/18 18:57, Robert Stanford wrote:
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>> > Our OSDs are BlueStore and are on regular hard drives. Each OSD has
>>>>> a partition on an SSD for its DB. Wal is on the regular hard drives.
>>>>> Should
>>>>> I move the wal to share the SSD with the DB?
>>>>> >
>>>>> > Regards
>>>>> > R
>>>>> >
>>>>> >
>>>>> > _______________________________________________
>>>>> > ceph-users mailing list [ mailto:ceph-users@lists.ceph.com |
>>>>> ceph-users@lists.ceph.com ] [
>>>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com |
>>>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com ]
>>>>> >
>>>>> > you should put wal on the faster device, wal and db could share the
>>>>> same ssd partition,
>>>>> >
>>>>> > Maged
>>>>> >
>>>>> > _______________________________________________
>>>>> > ceph-users mailing list
>>>>> > ceph-users@lists.ceph.com
>>>>> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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>>>>> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>>>>>
>>>>> _______________________________________________
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>>>>> ceph-users@lists.ceph.com
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>>>>>
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>>>>
>>>
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