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[linux-lvm] LVM breaks due to partion types when moving versions.



Hey all,

I am in the process of moving a large NAS head running LVM volumes from a SUSE PRO
9.1 to 9.3 setup. This is normally easy as I just disconnect the storage arrays from one host
(Suse 9.1) to new host (9.3), and LVM sees the volumes on boot and does the right stuff.
Going from LVM lvm2-2.00.09-12 to lvm2-2.01.07-3.i586.rpm


Unfortunately, in this case, previous makers of pv's made them with non standard partition types.
So, there were functional partitions before with standard linux ID's working as LVM.
Device Boot Start End Blocks Id System
/dev/sdh1 1 136102 1093239283+ 83 Linux


But they are not working with the new version of lvm.... lvm2-2.01.07-3.i586.rpm
(notice a lack of sdh1 in pvscan below)



so vgroup linking is broken

/tmp/lvm/backup # pvscan
Couldn't find device with uuid 'bbrTkY-2HDP-2z2D-ehDB-8tnP-jI4b-xl6vHi'.
Couldn't find device with uuid 'mrR810-I9mY-8hTP-tXak-RN6j-DUlY-zO5B3o'.
Couldn't find device with uuid 'yaSDig-ATsH-oVtI-1lON-JM26-e7dG-plgUYM'.
Couldn't find device with uuid 'NyRAN0-X1Wu-pCEI-LPnK-Bs3T-oWHR-tEjyCA'.
Couldn't find device with uuid 'YLkutw-fjRA-03VU-vAx9-i8Et-HnuB-8iMbFK'.
Couldn't find device with uuid 'bbrTkY-2HDP-2z2D-ehDB-8tnP-jI4b-xl6vHi'.
Couldn't find device with uuid 'mrR810-I9mY-8hTP-tXak-RN6j-DUlY-zO5B3o'.
Couldn't find device with uuid 'yaSDig-ATsH-oVtI-1lON-JM26-e7dG-plgUYM'.
Couldn't find device with uuid 'NyRAN0-X1Wu-pCEI-LPnK-Bs3T-oWHR-tEjyCA'.
Couldn't find device with uuid 'YLkutw-fjRA-03VU-vAx9-i8Et-HnuB-8iMbFK'.
PV /dev/sdf VG livestore2_copy_vg lvm2 [1.02 TB / 155.00 GB free]
PV /dev/sde VG livestore2_copy_vg lvm2 [1.02 TB / 5.00 GB free]
PV /dev/sdd VG livestore2_copy_vg lvm2 [1.02 TB / 110.79 GB free]
PV unknown device VG devstore2_vg lvm2 [1.02 TB / 0 free]
PV unknown device VG devstore2_vg lvm2 [1.02 TB / 0 free]
PV unknown device VG devstore2_vg lvm2 [1.02 TB / 0 free]
PV unknown device VG devstore2_vg lvm2 [1.02 TB / 0 free]
PV unknown device VG devstore2_vg lvm2 [1.02 TB / 0 free]
PV /dev/sdb VG devstore2_vg lvm2 [1.02 TB / 0 free]
PV /dev/sdc VG devstore2_vg lvm2 [1.02 TB / 715.17 GB free]
Total: 10 [10.18 TB] / in use: 10 [10.18 TB] / in no VG: 0 [0 ]


# vgscan
 Reading all physical volumes.  This may take a while...
 Found volume group "livestore2_copy_vg" using metadata type lvm2
 Couldn't find device with uuid 'bbrTkY-2HDP-2z2D-ehDB-8tnP-jI4b-xl6vHi'.
 Couldn't find all physical volumes for volume group devstore2_vg.
 Couldn't find device with uuid 'bbrTkY-2HDP-2z2D-ehDB-8tnP-jI4b-xl6vHi'.
 Couldn't find all physical volumes for volume group devstore2_vg.
 Volume group "devstore2_vg" not found

But I do have backup copies of /etc/lvm.

So I was wondering if I could just use fdisk to set the partitions type to 8e, and LVM2 might work with it?

However, I thought LVM2 does not need 8e anymore, or did they change that?

I figure I can test by using sfdisk to backup the partition table, change it and see what happens.
Might have to use vgcfgrestore to put the pv metadata back in.


Anybody do this recently or have any ideas.

Thanks in advance!

Lance



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