Re: [RFC PATCH] Revert "NFSD: Force all NFSv4.2 COPY requests to be synchronous"

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On Wed, Jun 18, 2025 at 2:58 PM Chuck Lever <cel@xxxxxxxxxx> wrote:
>
> From: Chuck Lever <chuck.lever@xxxxxxxxxx>
>
> In the past several kernel releases, we've made NFSv4.2 async copy
> reliable:
>  - The Linux NFS client and server now both implement and use the
>    NFSv4.2 OFFLOAD_STATUS operation
>  - The Linux NFS server keeps copy stateids around longer
>  - The Linux NFS client and server now both implement referring call
>    lists
>
> And resilient against DoS:
>  - The Linux NFS server limits the number of concurrent async copy
>    operations

And how does an amin change that limit? There is zero documentation
for admins, and zero training or reference material for COPY, CLONE,
ALLOCATE, ...

Aurélien
-- 
Aurélien Couderc <aurelien.couderc2002@xxxxxxxxx>
Big Data/Data mining expert, chess enthusiast





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