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Re: [dm-devel] Issues with mkinitrd and path priority modules

Hi Konrad,

Thanks for your help.
I got what I need to do.

As I understand from the lines from mkinitrd below, I need to build 2
versions of my mpath_prio_custom; along with the normal one, I need to
build a static version with ".static" appended to the file name. The
mkinitrd looks for the "mpath_prio_*.static" files to copy.

<snip from mkinitrd>
    # This includes all mpath_prio checkers in the image (~2.5M)
    # Alternately we can only include those that are used by the
    # current mpath config. This would require users to rebuild
    # the initrd if migrating/adding controllers from different
    # storage vendors
    for M in /sbin/mpath_prio_*.static ; do
        inst ${M} $MNTIMAGE/${M%%.static};

Thanks and Regards,

On Fri, Aug 29, 2008 at 7:08 AM, Konrad Rzeszutek
<konrad virtualiron com> wrote:
> On Thu, Aug 28, 2008 at 02:55:15PM -0700, Pradipmaya Maharana wrote:
>> Hi All,
>> I have created mpath_prio_custom, based on code from mpath_prio_alua.
>> I specified the module in /etc/multipath.cong for getting priority of
>> the luns.
>> prio_callout  "/sbin/mpath_prio_custom /dev/%n"
>> The module gets installed under /sbin with out any error, gives me
>> correct priorities and runs fine; but while this module is installed
>> if I do an mkinitrd, my module does not get included in the initrd
>> image.  And due to this, when the kernel boots next time, it fails. As
>> my module is mentioned in the multipath.conf, kernel tries to find
>> this module under /sbin but cannot find it and hence it fails. I see
>> other modules, mpath_prio_alua, mpath_prio_emc, etc. are part of the
>> initrd image.
>> What must I do so that my module gets included as a part of initrd image.
> Edit the 'mkinitrd' program to include this in. You didn't say what distro
> you are using so it is hard to say what else you might need to modify.
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