Re: [PATCH] libceph: handle EADDRNOTAVAIL more gracefully

[Sebastian Andrzej Siewior]

On 2026-02-10 09:19:29 [+0200], Ionut Nechita (Wind River) wrote:
> You're absolutely right that if the address became valid in 1-2s, the
> third or fourth attempt would succeed. The problem is that in our
> environment, EADDRNOTAVAIL does NOT resolve in 1-2 seconds. That was
> an incorrect generalization from simple DAD scenarios.
> 
> From the production dmesg (6.12.0-1-rt-amd64, StarlingX on Dell
> PowerEdge R720, IPv6-only Ceph cluster), the EADDRNOTAVAIL condition
> persists for much longer:
> 
>   13:20:52 - mon0 session lost, hunting begins, first error -99
>   13:57:03 - mon0 session finally re-established

My question again, is this specific to PREEMPT_RT or would also happen
in a !PREEMPT_RT setup?

Sebastian