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author	NeilBrown <neilb@suse.de>
	Sun, 20 May 2012 23:42:27 +0000 (09:42 +1000)
committer	NeilBrown <neilb@suse.de>
	Sun, 20 May 2012 23:42:27 +0000 (09:42 +1000)
commit	85bdd744c1504c6a4e7823f1dfa5cfbc3c5de44b
tree	be1b56b96e1c981addaa347862decad79b764811	tree \| snapshot
parent	9cf154394476f7f1d2b8852bd50b7fcb65d804dc	commit \| diff

New RESHAPE_NO_BACKUP flag to track when backup action is needed.

Some arrays (raid10) never need a backup file, so during assembly
we can avoid the whole Grow_continue check in the case.
Achieve this using a flag set by the metadata handler.

Also get "mdadm -I" to fail if a backup process would be
needed. It currently does fail as the kernel rejects things,
but it is nicer to have this explicit.

Signed-off-by: NeilBrown <neilb@suse.de>

Assemble.c		diff \| blob \| blame \| history
Incremental.c		diff \| blob \| blame \| history
mdadm.h		diff \| blob \| blame \| history
super1.c		diff \| blob \| blame \| history

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