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Quick update. With the release of ceph-csi 3.8 today the new shallow snapshots will be used by default as long as the access mode is ROX. Kasten seems to use RWO however.I have checked the Kanister source code, but the snapshot mounting for s3 upload seems to happen in the closed Kasten code base?
Hi @jaiganeshjk , Just wanted to check in if you have any insights into the release planning and whether this has can be plotted on the timeline, yet?We are still struggling with the issue every night when backups are running as storage load goes up so bad due to the CephFS copying that it impacts the overall system stability. Thanks a lot!
Hi @jaiganeshjk ,Thanks a lot for the investigation and getting back on this.That’s somewhat what I expected, but crossing my fingers now that it might land soon as it’s surely a vital feature for a lot of users once Ceph CSI 3.7 adoption has spread a bit further.Again if there’s anything I can do to help testing, let me know.
You got me excited :-) Good luck!
Hi @jaiganeshjk , thanks for the quick response.I believe this can be a real game changer for CephFS backups then. We would not want to change timeouts for now as this also puts quite a bit of load on the system, so a proper solution is definitely required.We have reverted to other software/scripts for the time being, but it would be ideal of course if Kasten handled this nicely.As I understand the spec, if you just use readonly access for the temporary PVC, that should already result in shallow clone being used, as per this item from the design doc:Volume source is a snapshot, volume access mode is *_READER_ONLY.I'd be really happy to see this happen any time soon - if there is a way for me to support (e.g. through testing), please let me know. Cheers,Pascal
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