Hi *, i run several CentOS4 systems as xen3 domU, and all of them suffer from the well-known-to-this-list db4/nptl bug: <https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=91933> so that i needed to rebuild db4 to make cyrus-imapd work. But a member of the centos devel ML reported that he has no problem at all running cyrus-imapd. Our setups are almost identical (dom0=FC6, xen-3.0-x86_32p, domU=CentOS-4.4 with kernel-xenU-2.6.9-* from Jason Baron), and the only difference we found was the CPU: my systems all run on intel, his on amd. That made us curious: Does - on 32bit systems - the db4/nptl bug depend on the CPU? The feature "syscall" is only present on the amd CPU, is there a relation? (i hope my question is not too silly ;) /nils. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
> so that i needed to rebuild db4 to make cyrus-imapd work. But a member > of the centos devel ML reported that he has no problem at all running > cyrus-imapd. Our setups are almost identical (dom0=FC6,xen-3.0-x86_32p,> domU=CentOS-4.4 with kernel-xenU-2.6.9-* from Jason Baron), and theonly> difference we found was the CPU: my systems all run on intel, his on > amd. That made us curious: > > Does - on 32bit systems - the db4/nptl bug depend on the CPU? The > feature "syscall" is only present on the amd CPU, is there a relation?No, it doesn''t depend on the CPU. The easiest solution is just to download the patched glibc from the XenSource web site or build your own. This is a much better solution than disabling TLS. Ian _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Am Donnerstag, den 08.02.2007, 12:23 +0000 schrieb Ian Pratt:> > so that i needed to rebuild db4 to make cyrus-imapd work. But a member > > of the centos devel ML reported that he has no problem at all running > > cyrus-imapd. Our setups are almost identical (dom0=FC6, > xen-3.0-x86_32p, > > domU=CentOS-4.4 with kernel-xenU-2.6.9-* from Jason Baron), and the > only > > difference we found was the CPU: my systems all run on intel, his on > > amd. That made us curious: > > > > Does - on 32bit systems - the db4/nptl bug depend on the CPU? The > > feature "syscall" is only present on the amd CPU, is there a relation? > > No, it doesn''t depend on the CPU.OK. What else may be the reason that the bug does not strike on an almost identical, pristine centos4?> The easiest solution is just to download the patched glibc from the > XenSource web site or build your own. This is a much better solution > than disabling TLS.Agreed. I once built my domU mailservers before there was a patched and update-sync''d glibc for Centos4/RHEL4 available (back in the xen2 days). Since they run fine, i''ll keep my evil workaround till CentOS5 is out. /nils. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel