-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 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 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iEYEARECAAYFAlaCfTgACgkQnVkHo1a+xU5pEACfaqGt+PEtIN1tfUhrNBeNb+a0 +U8An3VC9beI71YpjoVy/o5RIkl38dtt =Fq1P -----END PGP SIGNATURE-----