tree 29419f9639907eabb74e527fd3ed71bc08a122e9
parent 2ac295a544dcae9299cba13ce250419117ae7fd1
author NeilBrown <neilb@suse.de> 1401248361 +1000
committer NeilBrown <neilb@suse.de> 1401346770 +1000

md: refuse to change shape of array if it is active but read-only

read-only arrays should not be changed.  This includes changing
the level, layout, size, or number of devices.

So reject those changes for readonly arrays.

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