[linux-lvm] duplicate volume group names

[linux-lvm] duplicate volume group names

[Michal Adamczak]

hi,

------------

# vgscan
vgscan -- reading all physical volumes (this may take a while...)
vgscan -- found active volume group "vg0"
vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created
vgscan -- WARNING: This program does not do a VGDA backup of your volume
group

# vgchange -a y
vgchange -- volume group "vg0" already active

# pvscan
pvscan -- reading all physical volumes (this may take a while...)
pvscan -- ACTIVE   PV "/dev/ide/host2/bus0/target0/lun0/part3" of VG
"vg0" [55.71 GB / 14.14 GB free]
pvscan -- inactive PV "/dev/ide/host2/bus0/target1/lun0/part3" of VG
"vg0" [37.07 GB / 280 MB free]
pvscan -- total: 2 [92.79 GB] / in use: 2 [92.79 GB] / in no VG: 0 [0]

----------

and the question:
is it possible to get data from the second hdd if it has the same volume
name?
the second hardrive comes from a different computer and has nothing to
do with the 'vg0' of the first (system) hdd

do i need to change the name of the volume group name of the system disk
first?

regards

ps. plz respond to private email as i am not subscribed to the list

-- 
Michal Adamczak
pokryfka @ druid.if.uj.edu.pl
GS dpu C+++ UL+++++ L+++(++++) w--- !tv h*
I code AND I bathe. (seen on slashdot)

Re: [linux-lvm] duplicate volume group names

[Heinz J . Mauelshagen]

Michal,

detach the 2nd HDD, vgrename "vg0" to something, reattach the 2nd HDD,
run "vgscan;vgchange -ay" and you should be able to access both.
Keep necessary /etc/fstab changes in mind doing so.

Regular procedure for such VG moves from one computer to another is
"vgchange -an VG ; vgexport VG" on the 1st one, move PVs to the 2nd computer
and run "vgimport VG PVPath [PVPath...]" there.

Regards,
Heinz    -- The LVM Guy --



On Mon, Apr 14, 2003 at 10:36:56PM +0200, MichalAdamczak wrote:
> hi,
> 
> ------------
> 
> # vgscan
> vgscan -- reading all physical volumes (this may take a while...)
> vgscan -- found active volume group "vg0"
> vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created
> vgscan -- WARNING: This program does not do a VGDA backup of your volume
> group
> 
> # vgchange -a y
> vgchange -- volume group "vg0" already active
> 
> # pvscan
> pvscan -- reading all physical volumes (this may take a while...)
> pvscan -- ACTIVE   PV "/dev/ide/host2/bus0/target0/lun0/part3" of VG
> "vg0" [55.71 GB / 14.14 GB free]
> pvscan -- inactive PV "/dev/ide/host2/bus0/target1/lun0/part3" of VG
> "vg0" [37.07 GB / 280 MB free]
> pvscan -- total: 2 [92.79 GB] / in use: 2 [92.79 GB] / in no VG: 0 [0]
> 
> ----------
> 
> and the question:
> is it possible to get data from the second hdd if it has the same volume
> name?
> the second hardrive comes from a different computer and has nothing to
> do with the 'vg0' of the first (system) hdd
> 
> do i need to change the name of the volume group name of the system disk
> first?
> 
> regards
> 
> ps. plz respond to private email as i am not subscribed to the list
> 
> -- 
> Michal Adamczak
> pokryfka @ druid.if.uj.edu.pl
> GS dpu C+++ UL+++++ L+++(++++) w--- !tv h*
> I code AND I bathe. (seen on slashdot)
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

*** Software bugs are stupid.
    Nevertheless it needs not so stupid people to solve them ***

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Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
                                                  56242 Marienrachdorf
                                                  Germany
Mauelshagen@Sistina.com                           +49 2626 141200
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