EVMS causing problems with mdadm?

EVMS causing problems with mdadm?

[Ewan Grantham]

Did my latest updates for my Kubuntu (Ubuntu KDE variant) this
morning, and noticed that EVMS has now "taken control" of my RAID
array. Didn't think much about it until I tried to make a RAID-1 array
with two disks I've just added to the system. Trying to do a create
verbose tells me that device /dev/md1 (or 2 or 3 - I tried a couple
just to see) doesn't exist. And in fact, there are no block devices
listed beyond md0.

Trying to go into EVMS to create a new Volume brings up the screen for
doing so, but doesn't actually let you create a new one.

Any suggestion of what I might be doing wrong, or is this a bug I
should be reporting to the Ubuntu folks?

Re: EVMS causing problems with mdadm?

[Neil Brown]

On Sunday April 23, ewan.grantham@gmail.com wrote:
> Did my latest updates for my Kubuntu (Ubuntu KDE variant) this
> morning, and noticed that EVMS has now "taken control" of my RAID
> array. Didn't think much about it until I tried to make a RAID-1 array
> with two disks I've just added to the system. Trying to do a create
> verbose tells me that device /dev/md1 (or 2 or 3 - I tried a couple
> just to see) doesn't exist. And in fact, there are no block devices
> listed beyond md0.

Sounds like udev is in use rather than a static /dev.

Add '--auto=md' to the mdadm command line, and it will create the
devices for you.  Or --auto=part if you want partitioned arrays.  See
man page for more details.

I suspect this might need to be come the default in another year or so....

NeilBrown

> 
> Trying to go into EVMS to create a new Volume brings up the screen for
> doing so, but doesn't actually let you create a new one.
> 
> Any suggestion of what I might be doing wrong, or is this a bug I
> should be reporting to the Ubuntu folks?
> -
> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: EVMS causing problems with mdadm?

[Luca Berra]

On Mon, Apr 24, 2006 at 07:48:00AM +1000, Neil Brown wrote:
>On Sunday April 23, ewan.grantham@gmail.com wrote:
>> Did my latest updates for my Kubuntu (Ubuntu KDE variant) this
>> morning, and noticed that EVMS has now "taken control" of my RAID
>> array. Didn't think much about it until I tried to make a RAID-1 array
>> with two disks I've just added to the system. Trying to do a create
>> verbose tells me that device /dev/md1 (or 2 or 3 - I tried a couple
>> just to see) doesn't exist. And in fact, there are no block devices
>> listed beyond md0.
>
>Sounds like udev is in use rather than a static /dev.
>
>Add '--auto=md' to the mdadm command line, and it will create the
>devices for you.  Or --auto=part if you want partitioned arrays.  See
>man page for more details.
>
>I suspect this might need to be come the default in another year or so....
>
i was tkinking about stat()ing "/dev/.udev" and automatically enabling
--auto if found

WDYT?

L.

-- 
Luca Berra -- bluca@comedia.it
        Communication Media & Services S.r.l.
 /"\
 \ /     ASCII RIBBON CAMPAIGN
  X        AGAINST HTML MAIL
 / \