tags #391353 help # help needed to link aide statically against non-tls glibc or dietlibc thanks
On Fri, Oct 06, 2006 at 08:58:16AM +0200, Raphael Hertzog wrote: > I upgraded my personal server to etch and choosed to use a Xen enabled > kernel since we're going to have Xen support in etch (and also because > we're using this for the new alioth.debian.org so I wanted to have a > testbed for me). > > This morning my server was almost unreachable and while looking through > the logs I discovered those messages: > Oct 6 05:17:34 arrakeen kernel: printk: 246 messages suppressed. > Oct 6 05:17:34 arrakeen kernel: 4gb seg fixup, process aide (pid 1627), > cs:ip 73:080ae335 > Oct 6 05:17:40 arrakeen kernel: printk: 291 messages suppressed. > Oct 6 05:17:40 arrakeen kernel: 4gb seg fixup, process aide (pid 1627), > cs:ip 73:080ae335 > > Those messages appear when you use the standard libc6 instead of libc6-xen > on a Xen enabled kernel. That is a kernel bug, these messages should have a rate limit to not take the server down. I'm cloning the bug to the kernel because of that. > However I have libc6-xen installed.... but aide is using its own > statically linked libc6 which thus generates this message. Yes, that's a feature, see README.Debian.gz, section "statically linked". > Those messages means that the kernel worked around the bad libc6 but it's > extremely ineffective in doing so, so much that it effectively DOSsed my > server during the 3 hours when aide was running. Kernel bug. > I see two solutions: > - either you link again libc6 dynamically That's going to render aide useless, see README.Debian.gz. > - either you provide two versions of the binary and you use alternatives > (or you modify the cron script to detect /proc/xen and to start the > right binary) Send a patch, please. A third solution would be to link aide either against dietlibc or the non-tls version of glibc. I do not have a clue how to do this. > However it looks like there's no "libc6-xen-dev" to link statically a > xen-enabled libc6... That would be a libc6 bug. > So for etch, the right thing to do might be to provide additionnaly > a binary dynamically linked and to use the dynamic one if you detect > /proc/xen. I beg to differ. I'll probably make aide bail out if /proc/xen is detected. Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Mannheim, Germany | lose things." Winona Ryder | Fon: *49 621 72739834 Nordisch by Nature | How to make an American Quilt | Fax: *49 621 72739835 -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
