similar to: *** buffer overflow detected *** accessing invalid FD in libguestfs

We have extended collectd virt plugin to extract info about disk usage from a libvirt domain using libguestfs. We have had several issues with it which were raised here in 2018 by Peter Dimitrov. Currently the collectd plugin works fine and retrieves the required statistics. Current collectd configuration says that interval of reading statistics (interval of calling all plugins read functions) is

On Wednesday, 26 February 2020 10:43:27 CET Richard W.M. Jones wrote: > On Wed, Feb 26, 2020 at 11:21:18AM +0200, Veselin Kozhuharski wrote: > > Hallo Rich, > > > > Here is the fd list and total number just before collectd application > > crashes. Before that the number of used fd's is constantly increasing. It > > looks like a fd leak inside libguestfs to me.

--- scripts/ovirt | 2 +- scripts/ovirt-config-collectd | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/scripts/ovirt b/scripts/ovirt index 8296783..4a7cbc7 100755 --- a/scripts/ovirt +++ b/scripts/ovirt @@ -43,7 +43,7 @@ start() { log "skipping ovirt-awake, oVirt identify service not available" fi - find_srv collectd tcp +

Peter Dimitrov and myself were debugging a very peculiar bug when libguestfs is run as a plugin from collectd: https://www.redhat.com/archives/libguestfs/2018-November/thread.html#00023 The long story short is that collectd leaks SIGCHLD == SIG_IGN setting into plugins: https://www.redhat.com/archives/libguestfs/2018-November/msg00095.html This means that any plugin that does the usual

On Sun, Nov 16, 2008 at 11:08 AM, Arnaud Quette <aquette.dev at gmail.com> wrote: >>> The remainder, until the -pre stage, will be: >>> - the Powerman support (through the powerman driver) for more PDUs >>> - the possible RRD integration into upslog >> >> It would be nice to have native RRD support in upslog, but we may also >> want to point

Hi Gene, On Oct 21, 2014, at 9:12 PM, Gene Heskett <gheskett at wdtv.com> wrote: >> configure: error: libgd not found, required for CGI build >> >> And gdlib does not appear to be available from the repo's. > Sorry, I must have missed that message. This is still with Ubuntu 10.04, right? http://packages.ubuntu.com/source/lucid/nut lists the build dependencies,

On Tuesday 21 October 2014 22:06:48 Charles Lepple did opine And Gene did reply: > Hi Gene, > > On Oct 21, 2014, at 9:12 PM, Gene Heskett <gheskett at wdtv.com> wrote: > >> configure: error: libgd not found, required for CGI build > >> > >> And gdlib does not appear to be available from the repo's. > > Sorry, I must have missed that message.

On Tue, Nov 13, 2018 at 10:04:33AM +0000, Daniel P. Berrangé wrote: > On Fri, Nov 09, 2018 at 12:19:30PM +0000, Richard W.M. Jones wrote: > > Peter Dimitrov and myself were debugging a very peculiar bug when > > libguestfs is run as a plugin from collectd: > > > > https://www.redhat.com/archives/libguestfs/2018-November/thread.html#00023 > > > > The long

Hello, All my VMs are using LVs created on the host side. I'm using collectd to monitor some of the ressources of my host as well as the libvirt pluging to monitor my VMs. Collectd has an interesting plugin ( df ) which can monitor the filesystem usage. I would like to use it to monitor the VMs filesytsem usage. As it is obvious that if I mount the VM filesystem on the host while the

> That makes no sense because we are supposed to have just forked successfully I just realized libguestfs uses fork. Now we know why qemu-img worked - I launched it with popen. > So it must be something to do with collectd and how it runs programs. > Is it using LD_PRELOAD trickery, or replacing libc, or using seccomp? If I understand the question correctly - it's about how

Here are strace outputs per process. strace_output.22076 is the plugin's pid. (A little before forking) strace_output.22077 runs qemu-img strace_output.22078 is a mystery to me strace_output.22079 is rm -rf to the overlay image and its temporary dir. Best Regards, Peter On Wed, Nov 7, 2018 at 4:38 PM Richard W.M. Jones <rjones@redhat.com> wrote: > On Wed, Nov 07, 2018 at

From: root <root at chappy.(none)> Use ovirt-config-logging in /etc/init.d/ovirt --- scripts/ovirt | 19 ++++--------------- scripts/ovirt-config-logging | 2 +- scripts/ovirt-functions | 4 ++++ 3 files changed, 9 insertions(+), 16 deletions(-) diff --git a/scripts/ovirt b/scripts/ovirt index 4ff03f2..0c5e3be 100755 --- a/scripts/ovirt +++ b/scripts/ovirt @@

rhbz#:51422 --- ovirt-node.spec.in | 149 +++++++++------------------------------------------ 1 files changed, 27 insertions(+), 122 deletions(-) diff --git a/ovirt-node.spec.in b/ovirt-node.spec.in index 3138011..b4e660d 100644 --- a/ovirt-node.spec.in +++ b/ovirt-node.spec.in @@ -43,76 +43,23 @@ Requires: nc Requires: grub Requires: /usr/sbin/crond Requires: anyterm

Hey guys, puppet n00b here. I think I already found an answer for my question here, but the topic was dated back in november of 2011, so I''m hoping things have changed since then! Here''s the topic I''m referring to. https://groups.google.com/forum/?fromgroups#!topic/puppet-users/oSHWWjMX-sE I''m running: CentOS 6.3 yum 3.2.29 puppet 3.2.1 To sum it up, I

Added a new function, "ask_yes_or_no", to ovirt-functions. It contains a default prompt if none is provided. Changed all prompts that ask for yes, no and/or abort to use this new method. Signed-off-by: Darryl L. Pierce <dpierce at redhat.com> --- scripts/ovirt-config-boot-wrapper | 8 ++--- scripts/ovirt-config-collectd | 39 +++++++++++++++-----------

I've been looking around but haven't been able to find even a mention of a client on Android. Does one exist? -Parker Reed -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://alioth-lists.debian.net/pipermail/nut-upsuser/attachments/20180626/4b7c026e/attachment.html>

This patch supercedes the previous one by moving the functionality for relocating files into the make system.

Thank you, Rich, This was the issue indeed. export LIBGUESTFS_BACKEND=direct fixed it. The next step I tried was to integrate libguestfs in collectd virt plugin to collect this data automatically. In this case I'm having an unknown error in add_libvirt_dom() (same with add_domain) when it's invoking qemu-img to create overlay image. There is no difference between manual and service

I was extending the virt plugin. It already collects similar data (about VMs) using Libvirt's API, but lacks disk usage information. I went through some hoops to link libguestfs correctly to collectd. Is it okay to just include fork(), waitpid() example? It does reproduce the issue. Best Regards, Peter On Tue, Nov 13, 2018 at 1:34 PM Richard W.M. Jones <rjones@redhat.com> wrote:

Hi, thank you very much for reporting this! Sounds like a bug in the exec plugin – it never ceases to amaze me how many issues a single plugin can have ;) > > > This means that any plugin that does the usual pattern of: > > > > > > pid = fork (); Note that the exec plugin is the *only* plugin that does this. All other plugins are forbidden to fork(), popen() or