Two Words About LVM And SANs
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- LVM also solves the problem of changing device discovery order in a SAN -
each device that belongs to a vg has a signature written onto it.
Thus, when the system boots, it discovers the vg-s using these signatures,
no matter the order of booting the devices.
- The names of the device files associated with the logical volumes remain
fixed, making it easy to shuffle around RAIDs in the SAN.