Re: Is rbd caching safe to use in the current ceph-iscsi 3.0 implementation

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On Mon, Jun 24, 2019 at 4:05 PM Paul Emmerich <paul.emmerich@xxxxxxxx> wrote:
>
> No.
>
> tcmu-runner disables the cache automatically overriding your ceph.conf setting.

Correct. For safety purposes, we don't want to support a writeback
cache when fallover between different gateways is possible

>
> Paul
>
> --
> Paul Emmerich
>
> Looking for help with your Ceph cluster? Contact us at https://croit.io
>
> croit GmbH
> Freseniusstr. 31h
> 81247 München
> www.croit.io
> Tel: +49 89 1896585 90
>
>
> On Mon, Jun 24, 2019 at 9:43 PM Wesley Dillingham <wdillingham@xxxxxxxxxxx> wrote:
>>
>> Is it safe to have RBD cache enabled on all the gateways in the latest ceph 14.2+ and ceph-iscsi 3.0 setup? Assuming client are using multipath as outlined here: http://docs.ceph.com/docs/nautilus/rbd/iscsi-initiators/  Thanks.
>>
>> Respectfully,
>>
>> Wes Dillingham
>> wdillingham@xxxxxxxxxxx
>> Site Reliability Engineer IV - Platform Storage
>>
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>
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-- 
Jason
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