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List:       ceph-users
Subject:    [ceph-users] Re: Multipath and cephadm
From:       Michal Strnad <michal.strnad () cesnet ! cz>
Date:       2021-12-28 13:31:44
Message-ID: 16a2f247-6013-752f-6d79-7d2e7936e634 () cesnet ! cz
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Hi David.

I can't find any special character and command file show ASCII text.

file osd-spec-serverX.yml
osd-spec-serverX.yml: ASCII text

Problem is probably elsewhere. Does anyone use multipath with cephadm?

Thank you
--
Michal Strnad


On 12/24/21 12:47 PM, David Caro wrote:
> I did not really look deep, but by the last log it seems there's some 
> utf chars somewhere (Greek phi?) And the code is not handling it well 
> when logging, trying to use ASCII.
> 
> On Thu, 23 Dec 2021, 19:02 Michal Strnad, <michal.strnad@cesnet.cz 
> <mailto:michal.strnad@cesnet.cz>> wrote:
> 
>     Hi all.
> 
>     We have problem using disks accessible via multipath. We are using
>     cephadm for deployment, Pacific version for containers, CentOS 8 Stream
>     on servers and following LVM configuration.
> 
>     devices {
>               multipath_component_detection = 1
>     }
> 
> 
> 
>     We tried several methods.
> 
>     1.) Direct approach.
> 
>     cephadm shell ceph orch daemon add osd serverX:/dev/mapper/mpatha
> 
>     Errors are attached in 1.output file.
> 
> 
> 
>     2.  With the help of OSD specifications where they are mpathX
>     devices used.
> 
>     service_type: osd
>     service_id: osd-spec-serverX
>     placement:
>         host_pattern: 'serverX'
>     spec:
>         data_devices:
>           paths:
>             - /dev/mapper/mpathaj
>             - /dev/mapper/mpathan
>             - /dev/mapper/mpatham
>         db_devices:
>           paths:
>             - /dev/sdc
>     encrypted: true
> 
>     Errors are attached in 2.output file.
> 
> 
>     2.  With the help of OSD specifications where they are dm-X devices
>     used.
> 
>     service_type: osd
>     service_id: osd-spec-serverX
>     placement:
>         host_pattern: 'serverX'
>     spec:
>         data_devices:
>           paths:
>             - /dev/dm-1
>             - /dev/dm-2
>             - /dev/dm-3
>             - /dev/dm-X
>         db_devices:
>           size: ':2TB'
>     encrypted: true
> 
>     Errors are attached in 3.output file.
> 
>     What is the right method for multipath deployments? I didn't find much
>     on this topic.
> 
>     Thank you
> 
>     Michal
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