create raid10 with lvm

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http://serverfault.com – I came across an error when I create RAID10 with LVM2. I have four PVs and when I create LV using this command: sudo lvcreate --mirrors 1 --stripes 2 -l7630 -n lv0 vg0 --corelog display the VG, it should be empty,but it has half.. VG Name vg0 System ID Format lvm2 Metadata Areas 4 Metadata Sequence No 3 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 0 Max PV 0 Cur PV 4 Act PV 4 VG Size (HowTos)