Re: vgcreate confused by PVs on whole disk

[Louis Guillaume <louis%zabrico.com@localhost>]

On 3/2/12 4:37 PM, Steve wrote:
> Are you using redundant links to SAN or SAN like storage?
> That is what this looks like.
>
> Do a pv display on the disks in questions, you might find that the
> drives are already in use.


Nope. They are straight-up Xen-backend (xbd) drives. In the DOM0 they 
are just sparse files. pvdisplay was returning nothing before I created 
the new PVs.

Louis



> Steve
>
> On 2012-03-02 14:16, Louis Guillaume wrote:
> > Hi,
> >
> > I'm trying to create a volume group with 2 disk members that are
> > available to my system. There's no need for bootability, so I'm using
> > the whole raw disk partition. When it gets to "vgcreate" I get an
> > error like this:
> >
> > Found duplicate PV 5ei5O3Q1MfECIBfK52fKHotRoHhntt2v: using
> > /dev/rxbd1d not /dev/rxbd1a
> > /dev/rxbd2e: open failed: Device not configured
> >
> >
> > The VG is still created, but the message makes me nervous. Is this
> > message as serious as it sounds?
> >
> > Details about the setup are below. Any help would be great. Thanks!
> >
> >
> > Louis
> >
> >
> >
> > --
> >
> > This is on netbsd-5.99.59, amd64, XEN3_DOMU. The disks were prepared
> > like this...
> >
> > == Wiped like this... ==
> >
> > # dd if=/dev/zero of=/dev/rxbd2d bs=1k count=1000
> > 1000+0 records in
> > 1000+0 records out
> > 1024000 bytes transferred in 5.995 secs (170809 bytes/sec)
> >
> > == gpt'd like this ==
> >
> > # gpt create xbd1
> > # gpt create xbd2
> > # gpt show xbd1
> > start size index contents
> > 0 1 PMBR
> > 1 1 Pri GPT header
> > 2 32 Pri GPT table
> > 34 4194237
> > 4194271 32 Sec GPT table
> > 4194303 1 Sec GPT header
> > # gpt show xbd2
> > start size index contents
> > 0 1 PMBR
> > 1 1 Pri GPT header
> > 2 32 Pri GPT table
> > 34 12582845
> > 12582879 32 Sec GPT table
> > 12582911 1 Sec GPT header
> >
> >
> >
> > == Disklabeled like this ==
> >
> > # size offset fstype [fsize bsize cpg/sgs]
> > d: 4194304 0 unused 0 0 # (Cyl. 0
> > - 2047)
> >
> > # size offset fstype [fsize bsize cpg/sgs]
> > d: 12582912 0 unused 0 0 # (Cyl. 0
> > - 6143)
> >
> >
> > == PVs created ==
> >
> > # lvm pvcreate /dev/rxbd1d
> > Physical volume "/dev/rxbd1d" successfully created
> > # lvm pvcreate /dev/rxbd2d
> > Physical volume "/dev/rxbd2d" successfully created
> >
> >
> > == VG creation with errors ==
> >
> > # lvm vgcreate slowvg /dev/rxbd1d /dev/rxbd2d
> > Found duplicate PV 5ei5O3Q1MfECIBfK52fKHotRoHhntt2v: using
> > /dev/rxbd1d not /dev/rxbd1a
> > /dev/rxbd2e: open failed: Device not configured
> > Found duplicate PV zXxt1AWCwPdoHeTd2PO9R6ELmZJbcLWv: using
> > /dev/rxbd2a not /dev/rxbd2d
> > Volume group "slowvg" successfully created