Discuss August 2020

discuss@lists.centos.org

95 participants
63 discussions

CentOS7 and NFS
by Patrick Bégou 28 Aug '20

28 Aug '20

Hi, I need some help with NFSv4 setup/tuning. I have a dedicated nfs server (2 x E5-2620 8cores/16 threads each, 64GB RAM, 1x10Gb ethernet and 16x 8TB HDD) used by two servers and a small cluster (400 cores). All the servers are running CentOS 7, the cluster is running CentOS6. Time to time on the server I get: kernel: NFSD: client xxx.xxx.xxx.xxx testing state ID with incorrect client ID And the client xxx.xxx.xxx.xxx freeze whith: kernel: nfs: server xxxxx.legi.grenoble-inp.fr not responding, still trying kernel: nfs: server xxxxx.legi.grenoble-inp.fr OK kernel: nfs: server xxxxx.legi.grenoble-inp.fr not responding, still trying kernel: nfs: server xxxxx.legi.grenoble-inp.fr OK There is a discussion on RedHat7 support about this but only open to subscribers. Other searches with google do not provide useful information. Do you have an idea how to solve these freeze states ? More generally I would be really interested with some advice/tutorials to improve NFS performances in this dedicated context. There are so many [different] things about tuning NFS available on the web that I'm a little bit lost (the opposite of the previous question). So if some one has "the tutorial"...;-) Thanks Patrick

7 14

Testing
by Chris Weisiger 28 Aug '20

28 Aug '20

Testing Sent from my iPhone

1 0

Cannot update grup2-common
by Frank M. Ramaekers Jr. 27 Aug '20

27 Aug '20

when I try: # dnf update grub2-common Last metadata expiration check: 0:50:01 ago on Thu 27 Aug 2020 02:27:52 PM CDT. Error: Problem: The operation would result in removing the following protected packages: kernel (try to add '--allowerasing' to command line to replace conflicting packages or '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages) ...so how should I proceed? TIA, Frank

1 0

Laptop and NFS homedir
by isdtor 27 Aug '20

27 Aug '20

Afternoon, Are there any documented best practices for using NFS home directories on laptops? Right now, and this is on CentOS 7, when I disconnect the machine from the network, the desktop freezes, and I can't even tell if the machine switches to the wireless network. If this sort of adapter switching, which is standard in e.g. Windows 10, is even supported. Thanks for any insights.

7 8

DVR recorder how to resucue files
by Ralf Prengel 27 Aug '20

27 Aug '20

Hallo, we've a DVD recorder from everfoces and problems to open files using the interface. I made a backup using dd without any problems but how can I mount this image. Normal loop options don't work. Thanks for hints. Ralf

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Viewing changelog for packages to be updated
by Kenneth Porter 26 Aug '20

26 Aug '20

Is there some way to see the RPM changelog entries for a prospective yum update? Ideally I'd like to see just the entries that are newer than the version of the package I already have. I saw a new kernel in today's yum-cron email and I'd like to know what it's about and how urgent the issue is for me.

1 0

Mock config error
by me＠tdiehl.org 25 Aug '20

25 Aug '20

Hi, I am trying to create a mock configuration file that points to my local dnf repo. I have the following in the mock config template: [local-repo] name=my-Local baseurl=http://yumrepo.example.com/yum-repository/local/centos/8/x86_64/ failovermethod=priority skip_if_unavailable=False When I try to run mock I get the following error: (vgeppetto3 pts18) $ mock -v -r epel-8-x86_64 /home/mock/rpmbuild/SRPMS/centos-release-8.2-2.2004.0.1.el8.1.src.rpm File "<string>", line 238 baseurl=http://yumrepo.example.com/yum-repository/local/centos/8/x86_64/ ^ SyntaxError: invalid syntax ERROR: Error in configuration (vgeppetto3 pts18) $ I copied the url out of a yum repo file I am using that works with dnf on a centos 8 machine. Can someone tell me what I am doing wrong? Regards, -- Tom me(a)tdiehl.org

3 5

CentOS7 page-ranges printer option seems ignored
by Josh 24 Aug '20

24 Aug '20

A follow up on https://lists.centos.org/pipermail/centos/2020-July/351009.html In addition to page size problems I just found out that page-ranges option is ignored. To reproduce I created a two page PDF file and printed it like lp -d printer_name -o page-ranges=1 twopage.pdf Two local printers, HP and Canon output two pages. Printers were configured using CUPS UI by selecting the appropriate USB printer, then manufacturer and then PPD from a list of models. If I move printers to a Fedora 32 system they print correctly. Upgrading CentOS7 CUPS server from 1.6.3 to latest 2.3.3 had no effect. I wonder what else needs to be updated to resolve this problem. Thank you. -- Josh

1 0

CentOS 8 kernel-4.18.0-193 shim issue
by Mark LaPierre 21 Aug '20

21 Aug '20

Hey All, Is it safe to allow the 193 series kernel update now? Last time I tried that my system refused to boot. I had to roll back to the 4.18.0-147 kernel to get my machine to reboot. Since that happened I've been watching this mail list for acknowledgement that the problem has been corrected while refusing the kernel update. I may have missed the announcement that the issue was resolved and the the update is now approved. -- _ °v° /(_)\ ^ ^ Mark LaPierre Registered Linux user No #267004 https://linuxcounter.net/ ****

4 6

Jamulus for Centos
by Robert Moskowitz 20 Aug '20

20 Aug '20

Is anyone running their own Jamulus server? I have an x86_64 system running Centos7 that I can try bringing it up for my wife. So I better get it right! I have found rpms for 3.4.7.1 at: https://pkgs.org/download/Jamulus But on SourceForge I am seeing source for ver 3.5.10. In blogs I am seeing that the better client is for at least ver 3.5.1. Are there rpms available for some 3.5 version? thanks

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Discuss August 2020