On Wed, Mar 12, 2014 at 12:34:54PM +0100, Hannes Reinecke wrote: > Currently we cannot create device-mapper tables for multipath devices > whenever the underlying devices are read-only. Userspace can specify a read-only table when creating it. > This patch modifies the device-mapper to set the 'READ-ONLY' flag > automatically whenever a read-only device is added to the table. I don't know if it's working properly at the moment, but some targets (like dm-delay) are meant to work with a combination of read-only and read-write devices. I don't think the table mode should get changed quite like this: I think this problem needs wider review, perhaps overlapping with the problem of checking on the I/O path not just at device open time. Alasdair -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
