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  1. can core_pattern be modified from privileged CT?

    i've just found this: They simply set /proc/sys/kernel/core_pattern to execute user provided binary in host context by triggering coredump inside of privileged docker container. Can this be done with privileged CTs on proxmox? Or is...
  2. LXC loadavg

    I never had any issue with it.
  3. LXD 4.20 supports live migration of LXC containers LXD now has live migration. Perhaps recently the CRIUgenic technology has advanced a bit and Proxmox can start looking into this as well?
  4. Feature request: VM replication over Syncthing

    Syncthing is really cool, but i don't think this usecase would be currently supported by syncthing. These are my concerns: 1.) File permissions, extended attributes and other advanced metadata might not fully sync 2.) Syncthing can only write files under single user/owner. 3.) Syncing database...
  5. Can you please add UKSM into kernel?

    Anyway, i went ahead and suggested this in pve bugzilla:
  6. Can you please add UKSM into kernel?

    There is still some discussion about mainlining this: I think this might need fulltime developer for one or two months to get into upstream. But still might be well worth it for all the large scale PVE/LXC deployments out there...
  7. Recursive Mount

    Recursive bind mount would make lot of sense IMO. Please raise a feature request at
  8. PVE LXC Swap is incredibly suboptimal, causes freezing

    even with cgroupv2 enabled? this swap=mem+swap thing is absolutely messing with my setups for years... And this whole time i have very hard time defending this behaviour in our company. I like Proxmox very much, but people keep pushing Hyper-V and i will probably die inside little bit if i will...
  9. PVE LXC Swap is incredibly suboptimal, causes freezing

    Recently there was release of PVE 6.4 with improved cgroupv2 support, i wonder if that means that swap limit now works properly and independently from ram limit.
  10. Proxmox VE 6.4 available

    Thank you for great work guys, really hope you will keep going on! Changelog mentions "Improved cgroup v2 (control group) handling.". Can i ask what exactly was improved? Would it be safe to start phasing this to the production servers now?
  11. Linux 5.12 - ID Maping for Unprivileged CTs!

    OK I've created ticket in bugzilla: BTW can't really think about any downsides/drawbacks of using this for LXC. Do you have any?
  12. Linux 5.12 - ID Maping for Unprivileged CTs! They just released Linux 5.12, which can remap UIDs/GIDs of mountpoints. This is absolutely awesome feature which would mean that we don't really need to backup/restore or otherwise convert CT's filesystem when switching containers...
  13. PVE LXC Swap is incredibly suboptimal, causes freezing

    Any news on this? It seems that there was very interresting progress now that LXC 4.0 is implemented in Proxmox. Do you think it is now safe to boot into cgroupv2 mode in production? (given that i run reasonably recent guest distros in CTs). I really need to be able to limit the swap per CT (or...
  14. Proxmox VE 6.2 released!

    Nice to hear that. What are the downsides of booting with cgroupv2 (and therefore disabling cgroupv1)? Will it break something important?
  15. Proxmox VE 6.2 released!

    Cool! Since this uses LXC 4.0, is now cgroup v2 (unified hierarchy) used? Especialy for memory controller to limit swap properly?
  16. LXC: set memory.swappiness for individual CTs

    According to some docs, the swappiness cannot completely prevent cgroup from swapping when whole system is deprived of ram. But hey. it still might be interresting idea to set lower swappiness for mission critical containers, so they stay in the RAM during the peak hours, while the...
  17. LXC: set memory.swappiness for individual CTs

    You can check the swappiness was applied to individual CT by following command: cat /sys/fs/cgroup/memory/lxc/<CTID>/memory.swappiness But i let it run over night and according to proxmox web ui, the CT has swapped 100MB, so i am not sure if something really changed...
  18. LXC: set memory.swappiness for individual CTs

    Probably can even use following line in /etc/lxc/default.conf : lxc.cgroup.memory.swappiness = 0 But i am not sure... This does not seem to be applied to proxmox CTs.
  19. LXC: set memory.swappiness for individual CTs

    OK, so i've added following line to /etc/pve/lxc/XXX.conf file: lxc.cgroup.memory.swappiness: 0 And it seems to be working. Hopefully the swap is now disabled for that CT...
  20. How can I enable snapshots on LXC Container?

    ZFS heavily trades IO performance for caching / RAM consumption. So if you have enough RAM, your IO will be even faster than before. If you don't have enough RAM, the IO will be slow and RAM occupied.


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