Re: Large file downloads (~2TB) from CephFS drop at ~100 GB

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Is it possible that the software serving the content has a limit you run
into?


May the most significant bit of your life be positive.

Den sön 24 aug. 2025 13:08Mevludin Blazevic <mejdibl@xxxxxxxxx> skrev:

> Hello all,
>
> I am experiencing a strange issue with downloads from a CephFS-backed
> environment and would like to ask if anyone has seen similar behavior.
>
> When downloading large files (via wget or even directly through
> Firefox), the transfer speed is fine until the file size reaches roughly
> 100 GB. At that point, the session gets disconnected. This happens
> consistently, independent of the bandwidth available (e.g., whether the
> link runs at ~80 Mbit/s or ~230 Mbit/s). The only difference is how
> quickly the 100 GB “border” is reached.
>
> After the disconnect, the download can usually be resumed, but the
> cutoff is very repeatable. Is there a configuration that needs to be
> done on the ceph site?
>
> Best, Mevludin
>
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