RE: [xymon] fedora upgrade from 13 to 14 crashed hobbitd_rrd

["SebA" <spa (at) syntec.co.uk>]

Hi Jason,

I'm certainly no expert on this, but in the Bugzilla discussion in the
Fedora mailing list:
https://bugzilla.redhat.com/show_bug.cgi?id=638477#c29
That Henrik quoted below, there is a work-around posted originally by Linus
Torvalds (and reposted a bit more friendly here):
https://bugzilla.redhat.com/show_bug.cgi?id=638477#c55
This may also work for rrd. Try replacing /usr/bin/firefox in that post with
the command to execute hobbitd_rrd, or perhaps more precisely, try
prepending:
LD_PRELOAD=$HOME/Downloads/linusmemcpy.so to that command. Off the top of my
head, I'm not sure where you change that command though in the hobbit config
or code. I presume that it can be done though?

Kind regards,

SebA

> -----Original Message-----
> From: Jason Chambers [mailto:Jason.Chambers (at) geosoft.com] 
> Sent: 12 November 2010 13:53
> To: 'xymon (at) xymon.com'
> Subject: RE: [xymon] fedora upgrade from 13 to 14 crashed hobbitd_rrd
> 
> *face palm*
> 
> 
> OK, Let's see if I can figure out how to downgrade glibc. 
> 
> Note: not a linux user :)
> 
> 
> Thanks for this information guys.
> 
> Jason Chambers
> IT Help Desk Associate
> 
> GEOSOFT INC.
> freedom to explore
> T +1 416.369.0111 #344
> F +1 416.369.9599
> 
> Visit our site at www.geosoft.com
> 
> -----Original Message-----
> From: Xymon User in Richmond [mailto:hobbit (at) epperson.homelinux.net] 
> Sent: November-11-10 6:48 PM
> To: xymon (at) xymon.com
> Subject: Re: [xymon] fedora upgrade from 13 to 14 crashed hobbitd_rrd
> 
> On Thu, November 11, 2010 17:06, Henrik Størner wrote:
> > On Thu, 11 Nov 2010 20:45:24 +0000, Henrik "Størner" wrote:
> >
> >> In <018528ADB17A124D84DD0D081A4C82D22B5C61FB (at) exchange.geosoft.com>
> >> Jason Chambers <Jason.Chambers (at) geosoft.com> writes:
> >>
> >>> - Program crashed
> >>
> >>> Fatal signal caught!
> >>
> >>> Anyone know how I can resolve this issue? The tail end of 
> >>> rrd-status.log lo= oks like this:
> >>
> >>> 2010-11-11 14:43:34 RRD error updating 
> >>> /home/hobbit/data/rrd/xxx.yyy.com/di= sk,H.rrd from 192.168.0.0: 
> >>> This  RRD was created on another architecture
> >>
> >>> The funny thing is, the architecture never changed. I 
> just upgraded 
> >>> Fedora = Core from version 13 to 14.
> >>
> >> Could it be an upgrade from a 32-bit to 64-bit version of the RRD 
> >> library?
> >
> > I think the problem has been found, but it might be 
> difficult to fix.
> > Look at the Bugzilla discussion in the Fedora mailing list:
> > https://bugzilla.redhat.com/show_bug.cgi?id=638477#c29
> >
> > Apparently the glibc folks implemented a new version of the glibc 
> > routine that does memory-copies fin Fedora 14. And unlike the old 
> > version, this one corrupts data when copying between memory 
> areas that overlap.
> >
> 
> Interesting bug thread.  So the new glibc broke Flash (and 
> rrd), and who knows what else.  And even Linus Torvalds 
> thinks it's wrong and unnecessary.  And the glibc team seem 
> to be adamant about not changing it.
> 
> BSD, anyone?
> 
> 
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