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December 20th, 2011 07:00

Snapview, linux and lvm...

Maybe someone already solved my problem...

I have production lun, created 4 snaps for developers from that lun, and then added all 4 snap to 1 server... And cant get redhat lvm to work with it...

[root@testapp]# pvscan

  Found duplicate PV MkQC4Z4DNiqa8XRIvmXISC49Hpqj0y67: using /dev/mpath/mpath15 not /dev/mpath/mpath9

  Found duplicate PV MkQC4Z4DNiqa8XRIvmXISC49Hpqj0y67: using /dev/mpath/mpath17 not /dev/mpath/mpath15

  Found duplicate PV MkQC4Z4DNiqa8XRIvmXISC49Hpqj0y67: using /dev/mpath/mpath21 not /dev/mpath/mpath17

  Found duplicate PV MkQC4Z4DNiqa8XRIvmXISC49Hpqj0y67: using /dev/mpath/mpath25 not /dev/mpath/mpath21

  PV /dev/mpath/mpath25   VG emc1_u01    lvm2 [50.00 GB / 0    free]

  PV /dev/mpath/mpath9                              lvm2 [50.00 GB]

  PV /dev/mpath/mpath17                             lvm2 [50.00 GB]

  PV /dev/mpath/mpath21                             lvm2 [50.00 GB]

If i use pvchange -u {dev} command - i lost data in pv... Any suggestions? Or its impossible to use lvm and multiple snaps/clones on 1 host?

December 21st, 2011 04:00

Solved...

After add fresh snap, do vgrename to change name (to be unique), vgchange -u to generate new vg uuid and pvchange -u to generate new pv uuid... After that i can add next snap and do the same... All works perfect...

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