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I've updated the server with last updates and I rebooted it and pvesr hangs agains, but now, it in less of 1 day. New /var/log/kern.log file: Sep 18 08:04:52 proxmox kernel: [31658.991703] INFO: task pvesr:3511155 blocked for more than 241 seconds. Sep 18 08:04:52 proxmox kernel: [31658.991788]...

Today, after 22 days, another time the "pvesr" process hangs, you can see the /var/log/kern.log file: Sep 14 02:35:58 proxmox kernel: [1699437.896778] Buffer I/O error on dev zd48, logical block 143630, lost async page write Sep 16 02:33:42 proxmox kernel: [1872100.190098] Buffer I/O error on...

Extracted relevant parts. Attached full logs of period. First and last message about pvesr task fail from /var/log/kern.log file: Aug 25 08:03:52 proxmox kernel: [556186.483601] Tainted: P O 5.11.22-3-pve #1 Aug 25 08:03:52 proxmox kernel: [556186.483645] task:pvesr...

I can connect with ssh, but if I type: reboot it doesn't work, I need force it: reboot -f Waiting next task hung of pvesr to provide to you more info (1 week approx.) Thanks, Josep

Moved to https://forum.proxmox.com/threads/pvesr-task-zfs-replication-triggers-kernel-crash-on-proxmox-7.95075/

After 6 days working ok with Linux proxmox 5.11.22-3-pve #1 SMP PVE 5.11.22-6 (Wed, 28 Jul 2021 10:51:12 +0200) x86_64 GNU/Linux a same kernel crash appears (always "pvesr" task) on main node: Main node: Supermicro X10SDV-TLN4F motherboard 64GB RAM 16 x Intel(R) Xeon(R) CPU D-1541 @ 2.10GHz (1...

With kernel 5.11.22-6 two days running without problems.

Thanks for the information.

Why does Proxmox 7 was launched with Linux Kernel 5.11 (EOL May 2021) instead of 5.10 (LTS release)? For servers, I think LTS (long-term support) is a better option. Proxmox 6.2, 6.3 & 6.4 includes kernels 5.4 LTS as default option. If it's related to hardware support, then you can include LTS...

After the upgrade to Proxmox 7, after a day, more or less, my system begins to malfunction and the syslog shows: [15595.468370] perf: interrupt took too long (2504 > 2500), lowering kernel.perf_event_max_sample_rate to 79750 [25015.394686] perf: interrupt took too long (3132 > 3130), lowering...

I'd like share my experience with Google Domains and Let's Encrypt Certificates (ACME protocol) for local proxmox servers using DNS validation. You are free to modify and improve this guide. Sometimes you can prefer get Let's Encrypt Certificates using DNS validation instead of HTTP protocol...