Re: PATCH: Fix / on lvm

[Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

Hi,

On 07/13/2009 05:09 AM, Warren Togami wrote:
> On 07/10/2009 12:49 PM, Hans de Goede wrote:
>> Hi,
>>
>> Currently / on lvm is not working because the udev rules test for
>> KERNEL="dm-*" which of course
>> will not be true for PV's, so PV's are not recognized and thus lvm does
>> not work.
>>
>> The attached patch fixes this.
>>
>> Regards,
>>
>> Hans
>
> Could you please describe in detail the type of setup needed to
> reproduce this failure? I have / on lvm here and dracut is working just
> fine.
>

Basically the default anaconda partitioning setup so /boot /dev/sda1
(sata disk) and / on an lv whose vg contains one (large) pv which is
/dev/sda2

But this isn't all that interesting, read the rules, they are there to
do: "lvm vgscan; lvm vgchange -ay" when a new PV gets added to the system,
yet they contain the line:

KERNEL!="dm-*", GOTO="lvm_end"

Before doing this, meaning that a PV on a regular scsi disk (instead of a
PV on top of device mapper) will not cause the
"lvm vgscan; lvm vgchange -ay" to get executed and thus my / to not be
found.

Maybe you are using a dmraid setup ?  That would explain why these rules
are working for you.

Regards,

Hans


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