[dm-devel] [PATCH] kpartx: partitions of mapped devices cannot be created in redhat OS

[Benjamin Marzinski]

On Fri, Sep 09, 2016 at 10:24:29AM +0800, zhang.kai16 at zte.com.cn wrote:
>    How to create partitions without kpartx.rules if we want to use the latest
>    version multipath-tools of opensvc in rhel7.2?

This is what's at the end of the /lib/udev/rules.d/62-multipath.rules
file that gets installed with the regular rhel-7.2 multipath package. If
you add it to the end of the multipath.rules file that gets installed
with the upstream package, just before the

LABEL="end_mpath"

line, it should work fine:

ACTION=="change", IMPORT{db}="DM_MULTIPATH_NEED_KPARTX"
KERNEL!="dm-*", GOTO="end_mpath"
ENV{DM_UUID}=="mpath-?*|part[0-9]*-mpath-?*",
OPTIONS+="link_priority=10"
ACTION!="change", GOTO="end_mpath"
ENV{DM_UUID}!="mpath-?*", GOTO="end_mpath"
ENV{DM_SUBSYSTEM_UDEV_FLAG1}=="1", GOTO="end_mpath"
ENV{DM_ACTIVATION}=="1", ENV{DM_MULTIPATH_NEED_KPARTX}="1"
ENV{DM_SUSPENDED}=="1", GOTO="end_mpath"
ENV{DM_ACTION}=="PATH_FAILED", GOTO="end_mpath"
ENV{DM_ACTIVATION}!="1", ENV{DM_MULTIPATH_NEED_KPARTX}!="1",
GOTO="end_mpath"
RUN+="$env{MPATH_SBIN_PATH}/kpartx -a $tempnode", \
        ENV{DM_MULTIPATH_NEED_KPARTX}=""


> 
>    ������:         "Benjamin Marzinski" <bmarzins at redhat.com>
>    �ռ���:         Ritesh Raj Sarraf <rrs at researchut.com>,
>    ����:        dm-devel at redhat.com
>    ����:         2016-09-09 00:02
>    ����:        Re: [dm-devel] [PATCH] kpartx: partitions of mapped devices
>    cannot be created in redhat OS
>    ������:        dm-devel-bounces at redhat.com
> 
>    --------------------------------------------------------------------------
> 
>    On Tue, Sep 06, 2016 at 05:09:28PM +0530, Ritesh Raj Sarraf wrote:
>    > Yes. In Debian too, we've been hit by something similar.
>    >
>    > [1]http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=827412
>    >
>    [2]https://anonscm.debian.org/cgit/pkg-lvm/multipath-tools.git/tree/debian/dmsetup_
>    > env
> 
>    I just want to point out that we don't actually distribute kpartx.rules
>    in the redhat releases of the multipath-tools.
> 
>    -Ben
> 
>    >
>    >
>    >
>    > On Mon, 2016-08-29 at 19:12 +0800, tang.junhui at zte.com.cn wrote:
>    > > From: "tang.junhui" <tang.junhui at zte.com.cn>
>    > >
>    > > Environment variables such as DM_TABLE_STATE are used in kpartx.rules
>    which
>    > > exported
>    > > by "dmsetup export" in previous udev rules in SuSE OS, however, there
>    is no
>    > > such command
>    > > "dmsetup export" in redhat OS, so these environment variables are not
>    > > initialized and
>    > > partitions cannot be created. This patch replace "dmsetup export" with
>    > > "dmsetup info"
>    > > to get the status of mapped device, which can work well both in SuSE
>    and
>    > > redhat OS.
>    > --
>    > Given the large number of mailing lists I follow, I request you to CC
>    > me in replies for quicker response
> 
>    > --
>    > dm-devel mailing list
>    > dm-devel at redhat.com
>    > [3]https://www.redhat.com/mailman/listinfo/dm-devel
> 
>    --
>    dm-devel mailing list
>    dm-devel at redhat.com
>    [4]https://www.redhat.com/mailman/listinfo/dm-devel
> 
> References
> 
>    Visible links
>    1. http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=827412
>    2. https://anonscm.debian.org/cgit/pkg-lvm/multipath-tools.git/tree/debian/dmsetup_
>    3. https://www.redhat.com/mailman/listinfo/dm-devel
>    4. https://www.redhat.com/mailman/listinfo/dm-devel