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From: "Bryn M. Reeves" <bmr@redhat.com>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] LVM partition type
Date: Thu, 05 Mar 2009 15:59:02 +0000	[thread overview]
Message-ID: <49AFF6C6.1040508@redhat.com> (raw)
In-Reply-To: <ffa0f8300903050753q6dc7c47bx6302d31d174a3dec@mail.gmail.com>

Tejas Sumant wrote:
> Hi there,
> 
> I created a physical volume using pvcreate command on /dev/sda. When I
> checked the partition entries in MBR for /dev/sda using fdisk observed
> that no partitions were displayed.

The pvcreate command only creates LVM2 labels, it does not update the 
MBR or other disk label at all.

> Why pvcreate doesnt make partition entry with type 8e in MBR? Which

That's your job ;)

If you chose to use partitions for PVs then you need to create those 
partitions and set their type codes appropriately (although LVM2 
doesn't actually check/use those type codes anywhere - it's really 
more of a "documentation" step these days).

> partition entry gets used in case whole disk is made PV?

None of them. If you use the whole disk as a PV it should not have any 
MBR at all.

Regards,
Bryn.

      reply	other threads:[~2009-03-05 15:58 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-03-05 15:53 [linux-lvm] LVM partition type Tejas Sumant
2009-03-05 15:59 ` Bryn M. Reeves [this message]

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