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On 29/12/15 08:23, Fabian Arrotin wrote:
On 29/12/15 04:01, david wrote:
Folks
I've been having lots of problems with Centos 7 on Raspberry Pi 2. The network seems to work for a while after a bootstrap, but then dies. The command systemctl restart network always fails. This occurs after installation and updates.
I wonder of others have had this issue, or is my RPI2 defective? It's connected to my internal network by a wire-connection to a working Centos 6 gateway. I posted the results of journalctl earlier, so won't bother reposting.
Is this the right mail=list to detect if and when the issue is addressed?
David
Hmm, multiple people reported the same image running fine on the rpi2. Does that happen only after some intense network activity ? What does journalctl / /var/log/messages have to say about the issue ? Also, the default image doesn't use network , but NetworkManager, so systemctl status NetworkManager is the way to go, and not systemctl status network
The network issue you seems to report rings a bell on my side, but not with the rpi2 board, and not with the centos 7 image. I had that issue with RedSleeve 6 running on my rpi1, and the fix was to change some default kernel parameter for that issue. Here is my ansible playbook snippet for that :
- name: configuring kernel memory for network issue sysctl:
name=vm.min_free_kbytes value=8192 state=present
But that was for my rpi1 board, so don't think that it applies to rpi2 and kernel 4.1.11-v7+.
Can you create a bug report on https://bugs.centos.org, so that we can track it there, and so that it can also appear publicly, in case other people would have the same issue (my rpi2 board is running for quite some weeks now without a glitch, but haven't really transferred a lot of data through the ethernet interface either)
Kind Regards,
So, just to add that , without any change to the the rpi2 CentOS 7 userland image, I've downloaded 100 times the CentOS-7-i386-LiveGNOME-1511.iso image (so 1.1GB * 100) on the rpi2, from an internal mirror (rpi2 connected on a gbit switch), and no network issue, even under high load.
I must even admit that the throughput I was able to get impressed me (as the ethernet interface is just a smsc95xx USB 2.0 Ethernet one): 2015-12-29 11:38:18 (11.2 MB/s)
It would be interesting to have other informations about: - - logs - - which kind of traffic is that rpi2 getting (push/pull/both)
- -- Fabian Arrotin The CentOS Project | http://www.centos.org gpg key: 56BEC54E | twitter: @arrfab