Phillip Susi wrote: > Jun'ichi Nomura wrote: >> So, you have to put the linear mapping *before* that. >> Then, the top-level block device will be locked but you can >> still change the underlying mappings. > > So using a disk device as a dm target locks it. DM won't use a disk > device as a target if it is locked. If a device is locked by a DM device on top of it, other DM device can still use the device as a target. Also, even if a DM device is locked by mount, you can still change the table of the DM device. > Are you saying that dm can use > another dm device as a target, even if it is already locked by being > used as another dm target? I'm not sure if I understand your last sentence correctly. Does the above comment answer to your question? Thanks, -- Jun'ichi Nomura, NEC Corporation of America -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
