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Re: [Xen-devel] XCP: pygrub missing ext4 support.

On 06/21/2010 02:44 PM, Pasi Kärkkäinen wrote:
On Mon, Jun 21, 2010 at 01:58:35PM +0200, Michal Novotny wrote:
David, this is totally xen independent thing. This is based on the
operating system's version of e2fsprogs installed and provided if there
are systems having e2fsprogs version *with* the ext4 support it will be
working fine for them.

Michal: Remember we're talking about XCP (Xen Cloud Platform) here,
not "traditional" Xen installations..

So it just needs to be decided in which way to solve it in XCP.

-- Pasi


Oh, sorry Pasi, I didn't know that. If this is about XCP (which I am completely unfamiliar with) it's fine. Just note that it the e2fsprogs on the host machine does matter so maybe having the newest e2fsprogs in the XCP should work fine.

Michal

Michal

On 06/21/2010 01:55 PM, David Markey wrote:
Well whichever way we go, could we get some movement before XCP 0.5 final?

On 21 June 2010 12:48, Michal Novotny<minovotn@xxxxxxxxxx
<mailto:minovotn@xxxxxxxxxx>>  wrote:

     On 06/21/2010 01:38 PM, David Markey wrote:

         The *non-e2fsprogs* implementation, i.e.
         tools/libfsimage/ext2fs/fsys_ext2fs.c has ext4 support already.


     Oh, ok, provided the fact that e2fsprogs implementation is being
     just simply linked to the e2fsprogs library upgrading the package
     to the newest/upstream package is the simplest thing you could do.

     Michal



         On 21 June 2010 12:29, Michal Novotny<minovotn@xxxxxxxxxx
         <mailto:minovotn@xxxxxxxxxx>  <mailto:minovotn@xxxxxxxxxx
         <mailto:minovotn@xxxxxxxxxx>>>  wrote:

            On 06/21/2010 01:26 PM, David Markey wrote:

                Well, which ever way we do it, either using the built in
                libfsimage ext4 support, or upgrading e2fsprogs, we should
                choose one?



            Well, when using libfsimage *non-e2fsprogs* implementation the
            ext4 support have to be added manually but when using e2fsprogs
            implementation (i.e. the version linked with e2fsprogs) I
            recommend upgrading your version of e2fsprogs to the
            newest/upstream version.

            Michal

                On 21 June 2010 10:59, Michal Novotny
         <minovotn@xxxxxxxxxx<mailto:minovotn@xxxxxxxxxx>
         <mailto:minovotn@xxxxxxxxxx<mailto:minovotn@xxxxxxxxxx>>
         <mailto:minovotn@xxxxxxxxxx<mailto:minovotn@xxxxxxxxxx>

         <mailto:minovotn@xxxxxxxxxx<mailto:minovotn@xxxxxxxxxx>>>>  wrote:

                   On 06/19/2010 06:07 PM, Pasi Kärkkäinen wrote:

                       On Sat, Jun 19, 2010 at 05:00:57PM +0100, David
         Markey
                wrote:

                              XCP pygrub should have ext4 support.
                              It currently doesn't because the libfsimage
                ext2fs-lib
                           module is linked
                              against libext2fs, which doesnt have ext4
                support in XCP.
                              Instead, XCP should use the ext2fs module
         that comes
                           with libfsimage,
                              which has ext4 support.
                              Most new releases of distributions has it
         as their
                           default filesystem.
                              Most notably, Ubuntu 10.04


                       Also Fedora 12, Fedora 13, upcoming Debian 6.0
                ("Squeeze") and
                       RHEL6.

                       -- Pasi


                   Well, this is not the Xen issue here. We're having this
                fixed in
                   RHEL-5 by simply reinstalling the e2fsprogs package
         to the
                latest
                   one, although in case of RHEL-5 it's been renamed to
         e4fsprogs.
                   The simplest thing you can do about this is to
         reinstall the
                   e2fsprogs package on the host machine and it will be
                working fine
                   - at least it was when I did test it on RHEL-5 some
         time ago.

                   Simply put, reinstalling the e2fsprogs to the latest
                version will
                   do the job and allow ext4 functionality to pygrub.

                   Michal



                              An easy way for the build to use ext2fs
         instead of
                           ext2fs-lib, is to not
                              have ext2fs/ext2fs.h present.
                              Alternatively this patch hard codes it.
                              (From 4.0)
                              --- a/tools/libfsimage/Makefile
     2010-06-19
                           16:52:04.231221516
                              +0100
                              +++ b/tools/libfsimage/Makefile
     2010-06-19
                           16:52:08.803250922
                              +0100
                              @@ -1,8 +1,7 @@
                               XEN_ROOT = ../..
                               include $(XEN_ROOT)/tools/Rules.mk

                              -SUBDIRS-y = common ufs reiserfs iso9660
         fat zfs
                              -SUBDIRS-y += $(shell env CC="$(CC)"
                ./check-libext2fs)
                              +SUBDIRS-y = common ufs reiserfs iso9660
         fat zfs
                ext2fs

                               .PHONY: all clean install
                               all clean install: %: subdirs-%


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                   --     Michal Novotny<minovotn@xxxxxxxxxx
         <mailto:minovotn@xxxxxxxxxx>
         <mailto:minovotn@xxxxxxxxxx<mailto:minovotn@xxxxxxxxxx>>
         <mailto:minovotn@xxxxxxxxxx<mailto:minovotn@xxxxxxxxxx>

         <mailto:minovotn@xxxxxxxxxx<mailto:minovotn@xxxxxxxxxx>>>>, RHCE

                   Virtualization Team (xen userspace), Red Hat



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            --     Michal Novotny<minovotn@xxxxxxxxxx
         <mailto:minovotn@xxxxxxxxxx>  <mailto:minovotn@xxxxxxxxxx
         <mailto:minovotn@xxxxxxxxxx>>>, RHCE
            Virtualization Team (xen userspace), Red Hat




     --     Michal Novotny<minovotn@xxxxxxxxxx
<mailto:minovotn@xxxxxxxxxx>>, RHCE
     Virtualization Team (xen userspace), Red Hat



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--
Michal Novotny<minovotn@xxxxxxxxxx>, RHCE
Virtualization Team (xen userspace), Red Hat


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--
Michal Novotny<minovotn@xxxxxxxxxx>, RHCE
Virtualization Team (xen userspace), Red Hat


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