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From: Zdenek Kabelac <zkabelac@redhat.com>
To: LVM general discussion and development <linux-lvm@redhat.com>,
	Michael Fladischer <michael@fladi.at>
Subject: Re: [linux-lvm] Cannot create PV on /dev/dm-NN (/dev/dm-N works)
Date: Wed, 28 Mar 2018 10:27:50 +0200	[thread overview]
Message-ID: <5bf42865-57aa-9bbf-9d0b-2e2e34d74a8c@redhat.com> (raw)
In-Reply-To: <5efc943a1039bda80e77469afbfffd3d323c9a8f.camel@fladi.at>

Dne 27.3.2018 v 12:38 Michael Fladischer napsal(a):
> Hi,
> 
> I'm unable to create PVs on Multipath-Volumes that are available at
> /dev/dm-NN where N~[0-9] but I can create them on single digit devices
> like /dev/dm-9:
> 
> # pvcreate /dev/dm-6
>    Physical volume "/dev/dm-6" successfully created.
> 
> # pvcreate /dev/dm-16
>    Device /dev/dm-16 not found (or ignored by filtering).
> 
> My Version of LVM is 2.02.168 from Debian 9.
> The filter ist set to a permissive value:
>    filter = [ "a|.*|" ]
>    global_filter = [ "a|.*|" ]
> 
> Any ideas why two or more digits in the device path can cause it to be
> filtered by pvcreate?
> 



Hi


lvm2 is detecting  multipath 'component' devices - those are not allowed to be 
used for pvcreate.

You can use  'pvcreate -vvv' to get more information - there will be printed 
the reason why devices are rejected....

Eventually if you can't figure this out yourself - provide this trace in 
attachment.


Regards

Zdenek

  reply	other threads:[~2018-03-28  8:27 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-27 10:38 [linux-lvm] Cannot create PV on /dev/dm-NN (/dev/dm-N works) Michael Fladischer
2018-03-28  8:27 ` Zdenek Kabelac [this message]
2018-03-28  8:59   ` Michael Fladischer
2018-03-28 10:08   ` Roger Heflin

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