[gentoo-user] pvcreate on a dmraid device

[gentoo-user] pvcreate on a dmraid device

[Dan Johansson]

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I'm trying to setup a new Linux-server with an on board RAID-controller 
(Promise PDC20265 FastTrak100 Lite/Ultra100). Now everything goes well until 
I try to do a pvcreate on one of the raid-partitions, this is the output I 
get:
# pvcreate /dev/mapper/pdc_edcfibbf4
  Device /dev/mapper/pdc_edcfibbf4 not found.

But the device-file is there (along with the other partitions).

# ll /dev/mapper/pdc_edcfibbf*
brw-------  1 root root 253,  7 Nov  4 18:22 /dev/mapper/pdc_edcfibbf
brw-------  1 root root 253,  8 Nov  4 18:22 /dev/mapper/pdc_edcfibbf1
brw-------  1 root root 253,  9 Nov  4 18:22 /dev/mapper/pdc_edcfibbf2
brw-------  1 root root 253, 10 Nov  4 18:22 /dev/mapper/pdc_edcfibbf3
brw-------  1 root root 253, 11 Nov  4 18:22 /dev/mapper/pdc_edcfibbf4

and dmraid shows the raidgroup OK:
# dmraid -s
*** Active Set
name   : pdc_edcfibbf
size   : 160086465
stride : 128
type   : mirror
status : ok
subsets: 0
devs   : 2
spares : 0

Any suggestions on how I can solve this issue and move on with my 
installation.

Regards,
-- 
Dan Johansson, <http://www.dmj.nu>
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Re: [gentoo-user] pvcreate on a dmraid device

[Richard Fish]

Dan Johansson wrote:

>I'm trying to setup a new Linux-server with an on board RAID-controller 
>(Promise PDC20265 FastTrak100 Lite/Ultra100). Now everything goes well until 
>I try to do a pvcreate on one of the raid-partitions, this is the output I 
>get:
># pvcreate /dev/mapper/pdc_edcfibbf4
>  Device /dev/mapper/pdc_edcfibbf4 not found.
>
>But the device-file is there (along with the other partitions).
>
># ll /dev/mapper/pdc_edcfibbf*
>brw-------  1 root root 253,  7 Nov  4 18:22 /dev/mapper/pdc_edcfibbf
>brw-------  1 root root 253,  8 Nov  4 18:22 /dev/mapper/pdc_edcfibbf1
>brw-------  1 root root 253,  9 Nov  4 18:22 /dev/mapper/pdc_edcfibbf2
>brw-------  1 root root 253, 10 Nov  4 18:22 /dev/mapper/pdc_edcfibbf3
>brw-------  1 root root 253, 11 Nov  4 18:22 /dev/mapper/pdc_edcfibbf4
>  
>

I suspect the devices are being filtered.  Take a look at 
/etc/lvm/lvm.conf, and try running pvcreate with "-vv" to see how it is 
probing the devices.  You might need to add a 'filter = [ a/pdc_*/" ]' 
option to lvm.conf.

-Richard

-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] SOLVED pvcreate on a dmraid device

[Dan Johansson]

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On Friday 04 November 2005 21.35, Richard Fish wrote:
> Dan Johansson wrote:
> >I'm trying to setup a new Linux-server with an on board RAID-controller
> >(Promise PDC20265 FastTrak100 Lite/Ultra100). Now everything goes well
> > until I try to do a pvcreate on one of the raid-partitions, this is the
> > output I get:
> ># pvcreate /dev/mapper/pdc_edcfibbf4
> >  Device /dev/mapper/pdc_edcfibbf4 not found.
> >
> >But the device-file is there (along with the other partitions).
> >
> ># ll /dev/mapper/pdc_edcfibbf*
> >brw-------  1 root root 253,  7 Nov  4 18:22 /dev/mapper/pdc_edcfibbf
> >brw-------  1 root root 253,  8 Nov  4 18:22 /dev/mapper/pdc_edcfibbf1
> >brw-------  1 root root 253,  9 Nov  4 18:22 /dev/mapper/pdc_edcfibbf2
> >brw-------  1 root root 253, 10 Nov  4 18:22 /dev/mapper/pdc_edcfibbf3
> >brw-------  1 root root 253, 11 Nov  4 18:22 /dev/mapper/pdc_edcfibbf4
>
> I suspect the devices are being filtered.  Take a look at
> /etc/lvm/lvm.conf, and try running pvcreate with "-vv" to see how it is
> probing the devices.  You might need to add a 'filter = [ a/pdc_*/" ]'
> option to lvm.conf.

I got a tip on the LVM mailinglist and now it works. I had to change my lvm2 
"devices" configuration in /etc/lvm/lvm.conf to include:
types = [ "device-mapper", 254 ]

Regards,
-- 
Dan Johansson, <http://www.dmj.nu>
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