[PVE-User] System freeze after kernel update to 4.15.15-1-pve

[Thomas Lamprecht]

Hi,

Am 05/07/2018 um 11:31 AM schrieb Nurullah Ciftci:
> Linux Kernel 4.15 is end-of-life. Greg Kroah-Hartman, a linux kernel
> maintainer, said that all users of the 4.15 kernel series must upgrade.
> Is there any timeline ugrading 4.16 kernel to Proxmox?
> 
> https://news.softpedia.com/news/linux-kernel-4-15-reached-end-of-life-users-urged-to-move-to-linux-4-16-now-520787.shtml
> 

It's EOL for kernel.org, the highest kernel upstream. We base ours on
Ubuntu's 18.04 LTS, which will get support (i.e. bug (security and
others) fixes, new hardware support, etc. until 2023 (new hardware
"only" until 2020, though)[1] by Ubuntu's and our kernel people.

So that's not a problem. We'll keep the 4.15 kernel through the
remaining lifetime of PVE 5.X, which will be EOL'ed probably someday in
2020, if I had to guess [2].

[1]: https://www.ubuntu.com/info/release-end-of-life
[2]: https://pve.proxmox.com/wiki/FAQ (Point 10)

cheers,
Thomas

> 
> 2018-05-07 11:46, Thomas Lamprecht yazmış:
> 
>> Hi,
>>
>> Am 05/05/2018 um 12:35 PM schrieb Harald Leithner:
>>
>>> Hi, yesterday we did a kernel update on one of the cluster nodes to 4.15.15-1-pve, after some hours the node freezes and got fenced.
>>
>> There seem to be some IO regressions in this kernel release,
>> we updated it and pushed a version to pvetest which should include fixes
>> or revert the respective commits. Can you please try
>> pve-kernel-4.15.17-1-pve_4.15.17-8 [1]
>>
>> if possible. Users in our Forum reported that this version fixed their
>> issues.
>>
>>> There was no kernel panic... While rebooting the kernel crashed, you can find the screenshots at: https://privatebin.at/?450815b1e2b6977f#OZF5/DEC8pwJHM8NVMR0/ODogOPS3U1o738Riz813F4= [1] https://privatebin.at/?37d273119ba7acf4#YeJY6Y3K52vQPrncUvBfe+Ah8rzS+FD+6arkQHlRxAI= [2] I booted the old kernel 4.13.16-2-pve without problems. Specs: 3 node cluster with ceph. Supermicro SYS-1029U-TR4T 2x Intel Xeon Silver 4108 1,8 GHz Box Sockel 3647 64 GB DDR4 Btw. live migration from older kernel seams to fail too, but that hasn't been tested much.
>>
>> Hmm, from 4.13 to 4.15? I'll look into that...
>>
>> cheers,
>> Thomas
>>
>> [1]:
>> http://download.proxmox.com/debian/pve/dists/stretch/pvetest/binary-amd64/pve-kernel-4.15.17-1-pve_4.15.17-8_amd64.deb