I run CompleteFusion, and several other sites, on a virtual server hosted at VPSLink. Recently, I upgraded the server from Debian Etch to Lenny. After the upgrade, I've noticed errors like the following in the output from dmesg:
4gb seg fixup, process imap-login (pid 29663), cs:ip 73:002d9226
printk: 121 messages suppressed.
Some basic investigation revealed that this is apparently a fairly common issue with Xen domU instances, but it should be easy to fix:
- First, make sure libc6-xen is installed: apt-get install libc6-xen
- If /lib/tls exists on your system (it didn't on mine): mv /lib/tls /lib/tls.disabled
- echo 'hwcap 0 nosegneg' > /etc/ld.so.conf.d/libc6-xen.conf && ldconfig
- Reboot your domU
at 10:56 am
Thanks for this. I'm also hosted on VPSLink and noticed my syslog filling up with the same error. The 'hwcap 0 nosegneg' bit did the trick for me.
at 11:01 am
Thanks for the feedback, Matthew. I'm glad my suggested fix helped you.
at 7:35 pm
I am curious about how you upgraded from etch to lenny on vpslink. Did you just re-install or did you mess with your sources.list and do a dist-upgrade?
What I have found in the vpslink forums indicates that a dist-upgrade is not possible.
Thanks.
at 7:49 pm
@gumshoes: That's interesting. I definitely did a dist-upgrade, after changing my sources.list to the following:
deb http://ftp.debian.org/debian/ lenny main contrib non-free
deb-src http://ftp.debian.org/debian/ lenny main contrib non-free
deb http://security.debian.org/ lenny/updates main contrib
deb-src http://security.debian.org/ lenny/updates main contrib
at 6:37 am
Thanks, I used the VPS deb repo mirror and it worked (very fast):
deb http://debrepo.mirror.vpslink.com/debian lenny main contrib non-free
deb http://security.debian.org lenny/updates main contrib non-free
Kernel is still
2.6.18-ovz028stab039.1-smp #1 SMP Tue Jul 24 12:12:48 MSD 2007 i686 GNU/Linux
Think that can't be upgraded without a rebuild.
at 7:06 am
@gumshoes: That's great that the upgrade worked for you. Looks like you're right about the kernel, as mine is still 2.6.18-53.1.13.el5xen
at 4:41 pm
Just a quick note – if you copy and paste the commands as I did, they won't work because of the smartquotes that wordpress put in automatically. Make sure you use normal single-quotes around 'hwcap 0 nosegneg'.
That "feature" has gotten in the way far too many times…
at 10:24 am
@Jonathan Addleman: Thanks for pointing that out! I added a plugin to remove WordPress' smart quotes