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author	Peter Krempa <pkrempa@redhat.com>
	Wed, 11 Apr 2018 13:35:02 +0000 (15:35 +0200)
committer	Peter Krempa <pkrempa@redhat.com>
	Mon, 7 May 2018 12:41:20 +0000 (14:41 +0200)
commit	3817fa10c4ad9888798ac653d73166d8435bf45c
tree	48aac7d7e62330a3fe9a1b9c19bff2e7970b62b9	tree \| snapshot
parent	5dbdd401e81181b77b6d8ed303b772b9297ee6b7	commit \| diff

storage: Properly track that backing chain members are readonly

Everything besides the top of the chain is readonly. Track this when
parsing the XML and detecting the chain from the disk. Also fix the
state when taking snapshots.

All other cases where the top image is changed already preserve the
readonly state from the original image.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>

src/conf/domain_conf.c		diff \| blob \| blame \| history
src/qemu/qemu_driver.c		diff \| blob \| blame \| history
src/util/virstoragefile.c		diff \| blob \| blame \| history

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