similar to: home directory server performance issues

Hi, I'm trying to setup a firewalled NFS server. I've configured my server (CentOS 5) using the following parameters /etc/sysconfig/nfs MOUNTD_NFS_V1="no" MOUNTD_NFS_V2="no" RQUOTAD_PORT=875 LOCKD_TCPPORT=32803 LOCKD_UDPPORT=32769 RPCNFSDCOUNT=64 MOUNTD_PORT=892 STATD_PORT=662 STATD_OUTGOING_PORT=2020 SECURE_NFS="yes" modprobe.conf: options lockd

I have a dual Xeon 5130 (four total CPUs) server running CentOS 5.7. Approximately every 17 hours, the load on this server slowly creeps up until it hits 20, then slowly goes back down. The most recent example started around 2:00am this morning. Outside of these weird times, the load never exceeds 2.0 (and in fact spends the overwhelming majority of its time at 1.0). So this morning, a few

Hi, We have a little over 100 servers, almost all running CentOS 5.7. Virtually all are Dell servers, generally a mix of 1950s, R610s, and R410s. We use NTP and/or PTP to sync their clocks. One phenomenon we've noticed is that (1) on reboot, the clocks are all greatly out of sync, and (2) if the PTP or NTP process is stopped, the clocks start drifting very quickly. If it was isolated to

I can't seem to find the answer to this question via web search... I changed some hardware on a server, and upon powering it back on, got the "/dev/xxx has gone 40 days without being check, check forced" message. Now it's running fsck on a huge (2 TB) ext3 filesystem (5400 RPM drives no less). How can I stop this in-progress check? Ctrl-C doesn't seem to have any effect.

I have an ext4 filesystem for which I'm trying to use "tune2fs -l". Here is the listing of the filesystem from the "mount" command: # mount | grep share /dev/mapper/VolGroup_Share-LogVol_Share on /share type ext4 (rw,noatime,nodiratime,usrjquota=aquota.user,jqfmt=vfsv0,data=writeback,nobh,barrier=0) When I try to run "tune2fs" on it, I get the following error:

tune2fs against a LVM (albeit formatted with ext4) is not the same as tune2fs against ext4. Could this possibly be a machine where uptime has outlived its usefulness? On Thu, Apr 21, 2016 at 10:02 PM, Chris Murphy <lists at colorremedies.com> wrote: > On Tue, Apr 19, 2016 at 10:51 AM, Matt Garman <matthew.garman at gmail.com> > wrote: > > > ># rpm -qf `which

Is anyone on the list using kerberized-nfs on any kind of scale? I've been fighting with this for years. In general, when we have issues with this system, they are random and/or not repeatable. I've had very little luck with community support. I hope I don't offend by saying that! Rather, my belief is that these problems are very niche/esoteric, and so beyond the scope of typical

On Sat, April 30, 2016 8:54 am, William Warren wrote: > uptime=insecurity. This sounds like MS Windows admin's statement. Are there any Unix admins still left around who remember systems with kernel that doesn't need [security] patching for few years? And libc that does not need security patches often. I almost said glibc, but on those Unixes it was libc; glibc, however, wasn't

On Sun, Jan 17, 2016 at 10:05 AM, Matt Garman <matthew.garman at gmail.com> wrote: > I'm not sure what's going on with your drive. But if it were mine, I'd want > to replace it. If there are issues, that long smart check ought to turn up > something, and in my experience, that's enough for a manufacturer to do a > warranty replacement. I agree with Matt. Go

I always tell vendors I'm using RHEL, even though we're using CentOS. If you say CentOS, some vendors immediately throw up their hands and say "unsupported" and then won't even give you the time of day. A couple tricks for fooling tools into thinking they are on an actual RHEL system: 1. Modify /etc/redhat-release to say RedHat Enterprise Linux or whatever the actual RHEL

I'm probably overlooking something simple, but I can't seem to find a concise changelog for the rhel/centos kernel. I'm on an oldish 6.5 kernel (2.6.32-431), and I want to look at the changes and fixes for every kernel that has been released since, all the way up to the current 6.6 kernel. Anyone have a link to this? Thanks! Matt

We have a "compute cluster" of about 100 machines that do a read-only NFS mount to a big NAS filer (a NetApp FAS6280). The jobs running on these boxes are analysis/simulation jobs that constantly read data off the NAS. We recently upgraded all these machines from CentOS 5.7 to CentOS 6.5. We did a "piecemeal" upgrade, usually upgrading five or so machines at a time, every few

On Thu, Apr 9, 2015 at 8:49 AM, Johnny Hughes <johnny at centos.org> wrote: > rpm -qp --changelog <rpm-name> | less > > NOTE: This works for any kernel RPM in any version of CentOS ... you > can download the latest 6 RPM from here: > > http://mirror.centos.org/centos/6/updates/x86_64/Packages/ > > (currently kernel-2.6.32-504.12.2.el6.x86_64.rpm) > Thank

Hello, after upgrade from CentOS 5 to 5.1 I see the following error in /var/log/messages: 'rpc.idmapd[2330]: main: open(/var/lib/nfs/rpc_pipefs/nfs): No such file or directory' The directory exists with the permissions dr-xr-xr-x 2 root root 0 Dec 7 10:21 nfs So is this an owner/permisson problem? Should /var/lib/nfs/rpc_pipefs/nfs be owned by rpcuser? # ls -al /var/lib/nfs/ total

Il 18/01/2016 12:09, Chris Murphy ha scritto: > What is the result for each drive? > > smartctl -l scterc <dev> > > > Chris Murphy > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos > . > SCT Error Recovery Control command not supported

On Thu, Oct 27, 2016 at 12:03 AM, Larry Martell <larry.martell at gmail.com> wrote: > This site is locked down like no other I have ever seen. You cannot > bring anything into the site - no computers, no media, no phone. You > ... > This is my client's client, and even if I could circumvent their > policy I would not do that. They have a zero tolerance policy and if >

On Tue, Oct 25, 2016 at 12:48 PM, Matt Garman <matthew.garman at gmail.com> wrote: > On Mon, Oct 24, 2016 at 6:09 PM, Larry Martell <larry.martell at gmail.com> wrote: >> The machines are on a local network. I access them with putty from a >> windows machine, but I have to be at the site to do that. > > So that means when you are offsite there is no way to access

> Message: 4 > Date: Wed, 29 Apr 2015 08:35:29 -0500 > From: Matt Garman <matthew.garman at gmail.com> > To: CentOS mailing list <centos at centos.org> > Subject: [CentOS] nfs (or tcp or scheduler) changes between centos 5 > and 6? > Message-ID: > <CAJvUf-CyTg8ZiGq3OXRLKw7s1K2dGx1gqo_2XwOAXXQty=RHZQ at mail.gmail.com> > Content-Type: text/plain;

#define TL;DR Despite idmapd running, usernames/IDs don't get mapped properly. Looking for a workaround. #undef TL;DR I'm trying to get a new CentOS 7.1 workstation running, and having some problems with NFS filesystems. The server is a fully patched CentOS 6 server. On the NFS filesystem, there are two subdirectories owned by a regular user (joe). (There are actually more and by

tl;dr - Is anybody "running" a Fedora system via systemd-nspawn under CentOS? Long version: Before CentOS 7, I used chroot to create "lightweight containers" where I could cleanly add extra repos and/or software without the risk of "polluting" my main system (and potentially ending up in dependency hell). The primary driver for this was MythTV, which has dozens of