linux - adding a device to another device in a raid config -

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if have device mounted in rhel, how add device , make raid0 config?

i know how mount 2 new devices in raid0 config, how do 1 device in use , has data on it?

depends on details; lvm volume? add new device volume group , extend logical volume. file system zfs? add device pool. otherwise, need backup mounted drive, unmount , create raid0 volume.


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