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Friday, 31 January 2014

FILE SYSTEMS


Physical Volumes (PV's)
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lspv                        Lists all physical volumes (hard disks)
lspv (pv)                   Lists the physical volume details
lspv -l (pv)                Lists the logical volumes on the physical volume
lspv -p (pv)                Lists the physical partition usage for that PV
lspv -M (pv)                Lists the PP allocation table for that PV.

If the PV state is "missing" but the disk is okay, use "varyonvg vg" to change
the state of the PV to "active".

chdev -l (pv) -a pv=yes     Makes a new hdisk a pysical volume.

chpv -v r (pv)              Removes a disk from the system.
chpv -v a (pv)              Adds the removed disk back into the system.
chpv -a y (pv)              Changes pv allocatable state to YES
chpv -a n (pv)              Changes pv allocatable state to NO

migratepv (old pv) (new pv)     Moves all LV's from one PV to another PV, both
                                PV's must be in the same volume group.

Migratepv cannot migrate striped logical volumes, use cplv and rmlv.

replacepv (old pv) (new pv)     (4.3.3 onwards)

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