Den mån 25 aug. 2025 kl 08:18 skrev Mevludin Blazevic <mejd...@yahoo.com>: > > Indeed, Ceph FS and RBD serves Cloudstack which in turn uses Ceph FS via > NFS for "Secondary Storage". Cloudstack provides a download URL where I > can download a raw file via browser or wget. What is odd to me is that > the download rate shrinks rapidly around 100GB and it maintains for a > few minutes around 140 kbit/s before the connection is completely lost. > It is also visible in Ceph when the FS pool read ops per seconds drops > to zero. > > After I tried other approaches in Cloudstack, I see that other types of > large downloads do not show this behaviour, so I do not think that Ceph > is doing any throttling..
Interesting to note that the number 100GB comes up in cloudstack docs: https://docs.cloudstack.apache.org/en/latest/adminguide/templates.html#best-practices-for-templates This bug report seem to say others have size-related problems aswell, and log lines you could look for: https://github.com/apache/cloudstack/issues/2820 Looks close to your issue too: https://lists.apache.org/thread/9g5nf3oj5szydojswmzjyv6r786lht9w -- May the most significant bit of your life be positive. _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
