On 05/04/2022, NeilBrown wrote:
On Wed, 06 Apr 2022, Pascal Hambourg wrote:This is a question about original/alternate layout enforcement for RAID0 arrays with members of different sizes introduced by commits c84a1372df929033cb1a0441fb57bd3932f39ac9 ("md/raid0: avoid RAID0 data corruption due to layout confusion.)" and 33f2c35a54dfd75ad0e7e86918dcbe4de799a56c ("md: add feature flag MD_FEATURE_RAID0_LAYOUT"). The layout is irrelevant if all members have the same size so the array has only one zone. But isn't it also irrelevant if the array has two zones and the second zone has only one device, for example if the array has two members of different sizes ?Yes.
So wouldn't it make sense to allow assembly even when the layout is undefined, like what is done when the array has only one zone ?
