On Wed Sep 10, 2025 at 9:00 AM CEST, Fabian Grünbichler wrote: > On September 9, 2025 7:05 pm, Max R. Carrara wrote: > > Currently, *all* MGRs collectively segfault on Ceph v19.2.3 running on > > Debian Trixie if a client requests the removal of an RBD image from > > the RBD trash (#6635 [0]). > > > > After a lot of investigation, the cause of this still isn't clear to > > me; the most likely culprit are some internal changes to Python > > sub-interpreters that happened between Python versions 3.12 and 3.13. > > > > What leads me to this conclusion is the following: > > 1. A user on our forum noted [0] that the issue disappeared as soon as > > they set up a Ceph MGR inside a Debian Bookworm VM. Bookworm has > > Python version 3.11, before any substantial changes to > > sub-interpreters [1][2] were made. > > did you try with stock Debian Trixie packages (the Ceph version is still > 18.2 there, which might help narrowing it down)?
Not yet, but I'm going to eventually. Will just take a while to set everything up. > > in any case, it would be good to bring this issue to upstream's > attention as well! Already done ;) https://tracker.ceph.com/issues/72713 > > > 2. There is an upstream issue [3] regarding another segfault during > > MGR startup. The author concluded that this problem is related to > > sub-interpreters and opened another issue [4] on Python's issue > > tracker that goes into more detail. > > > > Even though this is for a completely different code path, it shows > > that issues related to sub-interpreters are popping up elsewhere > > at the very least. > > did you try reproducing that one? it seems it requires an optional > ceph-mgr plugin that we have packaged as well, so should be fairly > straight-forward.. Not yet, since the root cause of the bug was already found, it seems: https://github.com/python/cpython/issues/138045 > > > _______________________________________________ > pve-devel mailing list > [email protected] > https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel _______________________________________________ pve-devel mailing list [email protected] https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
