Discuss

discuss@lists.centos.org

34753 discussions

nfs v3 issues on Centos 7
by Edsall, William (WJ) 16 Feb '16

16 Feb '16

Hello list, So I'm having a strange issue with Centos 7 mounting NFS V3. It starts with autofs. For example, my auto.share file: apps -nfsvers=3 some-server:/mnt/xfs1/& This will mount, but the first mount takes ~30 sec. After this, eventually the mount becomes stale but it still shows as connected in 'mount'. At this point, I can no longer mount NFS shares. Manual mounting example shown below. Any feedback would be appreciated - thank you! /etc/centos-release :::::::::::::: CentOS Linux release 7.1.1503 (Core) mount -t nfs -o vers=3 mdstor:/mnt/xfs1/apps tmpx -v mount.nfs: timeout set for Tue Feb 16 08:33:31 2016 mount.nfs: trying text-based options 'vers=3,addr=143.219.41.19' mount.nfs: prog 100003, trying vers=3, prot=6 mount.nfs: trying 143.219.41.19 prog 100003 vers 3 prot TCP port 2049 mount.nfs: prog 100005, trying vers=3, prot=17 mount.nfs: trying 143.219.41.19 prog 100005 vers 3 prot UDP port 892 mount.nfs: mount(2): Input/output error mount.nfs: mount system call failed Thanks, William

2 2

Update on Kernel panic executing gkrellm.
by Lamar Owen 16 Feb '16

16 Feb '16

For what it's worth, back in April of last year I reported that gkrellm had started generating kernel panics with 7.1503's kernel. I can now report that with the latest 7.1511 kernels (327.4.5 being the latest I have installed) gkrellm is once again behaving for me. Just wanted to close the loop and say that whatever had broken has been fixed, for my hardware.

1 0

How to install packages from git.centos.org
by Tim 16 Feb '16

16 Feb '16

Hi all, how can I install rpms from git.centos.org? I'd like to install and test the realtime-kernel. It seems to me that https://wiki.centos.org/Sources only means to build srpms. What I ned is an rt-kernel with headers for further compiling. Purpose: I'd like to build a digital audio workstation and for this I'd like to try out CentOS with the following packages first: - kernel-rt - ardour - calf-plugins BTW: Is there an audio SIG? Thanks in advance Tim

2 4

USB Serial ports (ttyACMn) CentOS 6.7 (64-bit) vs. CentOS 6.7 (64-bit)
by Robert Heller 16 Feb '16

16 Feb '16

I have two computers: both running CentOS 6.7, 64-bit, with kernel 2.6.32-573.12.1.el6.x86_64. One is a laptop with an 2 core Intel processor and the other is a desktop machine with a 4 core AMD processor. Both with selinux enabled. I have a USB serial port device (a RR-CirKits LCC-Buffer USB). On the desktop I am getting this error: sauron.deepsoft.com% sudo minicom Device /dev/ttyACM0 access failed: No such file or directory. sauron.deepsoft.com% dir -lZ /dev/ttyACM0 crw-rw----. root dialout system_u:object_r:tty_device_t:s0 /dev/ttyACM0 But it is working on the laptop! gollum.deepsoft.com% dir -lZ /dev/ttyACM1 crw-rw----. root dialout system_u:object_r:tty_device_t:s0 /dev/ttyACM1 Same kernel, same device (except it is showing up as ttyACM1 on the laptop). What is going on here? -- Robert Heller -- 978-544-6933 Deepwoods Software -- Custom Software Services http://www.deepsoft.com/ -- Linux Administration Services heller(a)deepsoft.com -- Webhosting Services

5 8

rpm containing gmessage???
by ken 16 Feb '16

16 Feb '16

Maybe I haven't run the correct yum commands or looked in the right repo, but I haven't found a utility called 'gmessage'. Anyone know where to find it?

2 8

Re: [CentOS] USB Serial ports (ttyACMn) CentOS 6.7 (64-bit) vs. CentOS 6.7 (64-bit)
by Robert Heller 15 Feb '16

15 Feb '16

At Sun, 14 Feb 2016 19:20:48 -0500 Robert Heller <heller(a)deepsoft.com> wrote: > > At Mon, 15 Feb 2016 09:41:32 +1100 CentOS mailing list <centos(a)centos.org> wrote: > > > > > On 14/02/16 02:14, Robert Heller wrote: > > > I sent this out about a week or so ago, but I have heard nothing. I am > > > *thinking* it is a SELINUX problem, but I cannot figure out what. > > > > > > > If you suspect SELinux is to blame, have you tried putting SELinux into > > permissive mode to see that resolves the issues? > > > > setenforce 0 (re-enable with setenforce 1) > > I guess I can try that. > > > > > If everything works with SELinux in permissive mode, then you'll need to > > create a policy for it *[0]*. > > That would imply that somehow the policies on my laptop are *different* than > the policies on my desktop. *I* don't remember setting any such policies... OK, I just tested it: sauron.deepsoft.com% sudo /usr/sbin/setenforce permissive sauron.deepsoft.com% sudo minicom Device /dev/ttyACM0 access failed: No such file or directory. sauron.deepsoft.com% sudo /usr/sbin/setenforce enforcing Nope, that did not help. > > > > > > > ak. > > > > *[0]*: > > https://wiki.centos.org/HowTos/SELinux#head-faa96b3fdd922004cdb988c1989e561… > > > > > > _______________________________________________ > > CentOS mailing list > > CentOS(a)centos.org > > https://lists.centos.org/mailman/listinfo/centos > > > > > -- Robert Heller -- 978-544-6933 Deepwoods Software -- Custom Software Services http://www.deepsoft.com/ -- Linux Administration Services heller(a)deepsoft.com -- Webhosting Services

2 1

safest way to mount iscsi loopback..
by lejeczek 15 Feb '16

15 Feb '16

.. what is? fellow centosians. how to you mount your loopback targets? I'm trying lvm backstore, I was hoping I would do it with uuid, but it's exposed more than once and how would kernel decide which device to use I don't know. thanks

3 4

abrt-watch-log -F BUG: WARNING: at WARNING: CPU: INFO: possible recursive locking detected
by Michael H 15 Feb '16

15 Feb '16

Hi All, I've been tuning a server recently and just today this has started to appear in my top/htop output. [root@db1 ~]# ps -aux | grep kernel root 1011 0.0 0.0 212048 4532 ? Ss 13:34 0:00 /usr/bin/abrt-watch-log -F BUG: WARNING: at WARNING: CPU: INFO: possible recursive locking detected ernel BUG at list_del corruption list_add corruption do_IRQ: stack overflow: ear stack overflow (cur: eneral protection fault nable to handle kernel ouble fault: RTNL: assertion failed eek! page_mapcount(page) went negative! adness at NETDEV WATCHDOG ysctl table check failed : nobody cared IRQ handler type mismatch Machine Check Exception: Machine check events logged divide error: bounds: coprocessor segment overrun: invalid TSS: segment not present: invalid opcode: alignment check: stack segment: fpu exception: simd exception: iret exception: /var/log/messages -- /usr/bin/abrt-dump-oops -xtD I had made a few changes to sysctl.conf which I have now reverted and the error still exists. my sysctl.conf contained; vm.swappiness=0 vm.overcommit_memory=2 vm.overcommit_ratio=90 - this was only added this morning because of an 'out of memory' error in postgresql. kernel.shmmax=35433480192 kernel.shmall=2214592512 which I have now removed. Can anyone shine any light on this? A little search on Google mentions faulty memory, I will install memtest today and see what the output is like. Thanks Michael

2 1

A repo with latest httpd for http2?
by SternData 13 Feb '16

13 Feb '16

Is there a well-run package repo that has httpd-2.4.17 or mod_http2 (or mod_h2)? I'd like to try out http2 without having to compile my own httpd. -- -- Steve

7 7

ananconda update.img creation fails: generated but with wrong python version in /usr/sbin/anaconda contained
by David Copperfield 11 Feb '16

11 Feb '16

Hi all, I've created an anaconda update.img file per instructions at https://fedoraproject.org/wiki/Anaconda/Updates for Centos 7.2. The problem is that the update.img file contains references to python3 (say, file /usr/sbin/anaconda), and so the all installation fails immediately. My question is: what are the steps to create an anaconda update image appropriate for a particular centos release? Thanks a lot. The steps I have performed (to create an update.img) are listed below: 1) find the version of ananconda that centos 7.2 installation media: 21.48.22.56-1. 2) follow the instructions at the above wiki page, and wiki https://fedoraproject.org/wiki/Anaconda. Run the following command (to generate update.img): 2.1 yum -y install git 2.2 git clone https://fedoraproject.org/wiki/Anaconda 2.3 cd anaconda 2.4 scripts/makeupdates -t anaconda-21.48.22.56-1 3) save the generated image to place under .../images directory. >From what I see, all PXE clients did download the new update.img file and merge the changes contained. But because the updated anaconda pointed to python3 instead of python 2.7.5 (the version comes with installation media), the installation process failed immediately. Thanks. Best,David

1 0

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

Discuss