Re: [BUG] rbd hard lookup -> kernel crush by some crush maps

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On Mon, May 11, 2015 at 12:37 PM, Timofey Titovets <nefelim4ag@xxxxxxxxx> wrote:
> Sorry list, i just can't find how send bugs to tracking system -_-
>
> How reporduce:
> 1. Use crush rule
> rule replicated_ruleset {
>   ruleset 0
>   type replicated
>   min_size 1
>   max_size 10
>   step take default
>   step choose firstn 0 type room
>   step choose firstn 0 type rack
>   step choose firstn 0 type host
>   step chooseleaf firstn 0 type osd
>   step emit
> }
> 2. inject into cluster
> 3. do:
> rbd map <rbd name>
>
> crushtool passed test successful, but if you inject map into cluster
> (i use 0.94.1)
> All kernel rbd Clients who use rbd map, immadentely crush.
> i don't know which kernel not affected, but i catch it with 4.0.1
>
> With long stucktrace in kernel and message like "Hard lookup detected"
> Sorry but i realy have a problems with find logs =_=

Can you paste your entire crushmap?

Thanks,

                Ilya
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