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

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

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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