Luca Berra wrote:
i still believe it would be better if lvm ignored md component devices completely.
In kernel 2.6 land this is easy to do as well (for everything, not just MD). When vgscan tries to open the device to read metadata, open it with O_EXCL. If any other kernel subsystem is currently using the device, then the open() will fail and vgscan can ignore the device.
this won't help if the device is not yet opened by md i posted a patch to this list that checks for an md superblock. i am pushing for consideration of this approach.
L.
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