Your going to run into some more gotchas in centos-4. I have been running
it since it came out...
The BIGGEST problem is that BerkelyDB in CentOS-4 has been compiled with
mutexes and NTLM, which xen does not support, therefore you will run into
some limitations, as a result, many of the packages compiled against bdb
are NTLM enabled as well. If there are any rpm making guru''s out there,
I''d love to host a repository of rebuilt rpm''s (non-ntlm) that
fully
''xenify'' CentOS-4. Other than the NTLM issue... CentOS-4 has
been running
great with xen. I run a CentOS-4 dom0 and numerous CentOS-3.4 and CentOS-4
domU''s.
This is just a heads up for all out there using CentOS-4.
Cheers,
John Fairbairn
PS - if anybody''s already done the work of building these
rpm''s, i''d love
to get them from ya...thanks :)
---------------------------- Original Message ----------------------------
Subject: Re: [Xen-users] Installing Xen on CentOS
From: "Kip Macy" <kip.macy@gmail.com>
Date: Tue, May 31, 2005 2:12 pm
To: "Lee Mehlhorn" <leem@ubernet.ca>
Cc: xen-users@lists.xensource.com
--------------------------------------------------------------------------
You''ll need to create an initrd to boot off of LVM. When you specify
the
initrd in grub.conf, specify it as a module.
-Kip
On 5/31/05, Lee Mehlhorn <leem@ubernet.ca> wrote:> Hi,
> I was wondering if someone could help me get Xen installed on
> CentOS. I was able to download and install Xen successfully on a
minimal install of CentOS 4. The problem I''m having is getting it to
boot off the Xen kernel. I guess I''m just not sure about what I need
to put into my grub.conf in order to boot the Xen kernel. I would
appreciate if anyone has a grub entry which works and could post it that
would be great.. Thanks!>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>
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Gino LV. Ledesma
2005-Jun-01 00:01 UTC
Re: [Fwd: Re: [Xen-users] Installing Xen on CentOS]
I''d love to help out in building the RPMs. I recompile a lot of RPMs
(and most are easy since the SRPMS for Centos/RHEL are available) and
wouldn''t mind contributing. :-)
I''m currently running Centos 4 dom0s and domUs, and MySQL is one of
the biggest thorns since it was built against NTLM.
As for going back on topic...
This is what''s in my grub.conf:
title Xen 2.0.6 / Centos 4 2.6.11
kernel /xen.gz dom_mem=524288
module /vmlinuz-2.6.11.10-xen0 root=LABEL=/ ro nousb
module /initrd-2.6.11.10-xen0.img
Assumptions:
- I have a dedicated /boot partition so everything is relative to
that. Otherwise, you''d be putting in /boot/xen.gz,
/boot/vmlinuz-2.6.11.10-xen0, and /boot/initrd-2.6.11.10-xen0.img
- I put the ''nousb'' option there as recommended for the Dell
PowerEdge 1850s
- The initrd I made for myself. You can use Centos''s included initrd
initially if you want, though don''t be surprised to see errors when
loading modules during startup.
To create your own "clean" initrd, boot into the system and type the
following:
# mkinitrd /boot/initrd-2.6.11.10-xen0.img 2.6.11.10-xen0
This assumes that your kernel version is 2.6.11.10-xen0. man mkinitrd
for more info.
HTH,
gino ledesma
On 5/31/05, John Fairbairn <webmaster@proteus2.com>
wrote:> Your going to run into some more gotchas in centos-4. I have been running
> it since it came out...
> The BIGGEST problem is that BerkelyDB in CentOS-4 has been compiled with
> mutexes and NTLM, which xen does not support, therefore you will run into
> some limitations, as a result, many of the packages compiled against bdb
> are NTLM enabled as well. If there are any rpm making guru''s out
there,
> I''d love to host a repository of rebuilt rpm''s (non-ntlm)
that fully
> ''xenify'' CentOS-4. Other than the NTLM issue... CentOS-4
has been running
> great with xen. I run a CentOS-4 dom0 and numerous CentOS-3.4 and CentOS-4
> domU''s.
> This is just a heads up for all out there using CentOS-4.
>
> Cheers,
> John Fairbairn
>
> PS - if anybody''s already done the work of building these
rpm''s, i''d love
> to get them from ya...thanks :)
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Reformatted into pre-quote ... Am Dienstag, den 31.05.2005, 17:01 -0700 schrieb Gino LV. Ledesma:> On 5/31/05, John Fairbairn <webmaster@proteus2.com> wrote: > > Your going to run into some more gotchas in centos-4. I have been running > > it since it came out... > > The BIGGEST problem is that BerkelyDB in CentOS-4 has been compiled with > > mutexes and NTLM, which xen does not support, therefore you will run into > > some limitations, as a result, many of the packages compiled against bdb > > are NTLM enabled as well. If there are any rpm making guru''s out there, > > I''d love to host a repository of rebuilt rpm''s (non-ntlm) that fully > > ''xenify'' CentOS-4. Other than the NTLM issue... CentOS-4 has been running > > great with xen. I run a CentOS-4 dom0 and numerous CentOS-3.4 and CentOS-4 > > domU''s. > > This is just a heads up for all out there using CentOS-4. > > > > Cheers, > > John Fairbairn > > > > PS - if anybody''s already done the work of building these rpm''s, i''d love > > to get them from ya...thanks :) > > > I''d love to help out in building the RPMs. I recompile a lot of RPMs > (and most are easy since the SRPMS for Centos/RHEL are available) and > wouldn''t mind contributing. :-) > > I''m currently running Centos 4 dom0s and domUs, and MySQL is one of > the biggest thorns since it was built against NTLM.Hi, i am interested in helping out too. I ran into the same problems using cyrus-imapd with FC{2|3}, so i rebuilt the db4 rpm with no NPTL support. I could try to do that again for centos-4. Interested? According to Ian, there is another approach (search the devel list for the subjects "db4 problem" and "glibc patch for TLS"): apply the glibc- patch you find in this SRPM <http://www.cl.cam.ac.uk/Research/SRG/netos/xen/downloads/RPMS/fc3/> and rebuild the glibc and _all_ rpms which use TLS directly (unfortunatly nobody knows them) with the gcc option "-mno-tls-direct- seg-refs". Due to lack of time, i did not try that yet. A problem to be solved if you use dependency-resolver like yum or apt for upgrading is the naming of the rebuilt rpms. Take db4 as an example: * if you name it "db4-4.2.52-6noNTPL" (changing "release" in the spec file), yum will exchange it with any newer db4 rpm package disregarding the NPTL problem. A workaround would be to tell the yum/apt to _never_ fetch db4 from the usual update repository, but from our xen-friendly repo. * I tried to name it "db4noNPTL-4.2.52-6" (changing "name" in the spec file) using "obsoletes: db4" and "provides: db4". But then the reconstruction tools of cyrus-imapd complained the ''wrong'' db version, so i would had to recompile cyrus-imapd against "db4noNPTL"-headers ... ugly! * A more elegant way is to create and install an empty rpm "xen-db4" with the dependency "requires: db4_noNPTL" and to put "provides: db4_noNPTL" into the db4.spec. Should work, and with this yum/apt should only upgrade to our xen-friendly rpms containing "provides: db4_noNPTL". /nils. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users