On Wed, 2006-02-08 at 08:11 +0100, Luca Berra wrote: > On Tue, Feb 07, 2006 at 05:52:02PM -0500, Peter Jones wrote: > >It'd still be really nice to simply "turn off" physical partitions when > >we're using the full device in a device-map. > > wait, i tought device mapper used bd_claim on the component devices, > what am i missing? You're missing the failure case early in the boot sequence. If something goes wrong in making the dm device, it's hard to be *sure* nothing like "fsck -a" later goes and operates on one of the partitions. If you could completely turn them off before creating the raid, it'd be almost totally guaranteed that they won't do this. Just rm-ing the device node isn't really sufficient for this; plenty of things know how to mknod, or for example do mknod of everything they find in /sys/block . Very few programs do BLKRRPART. -- Peter _______________________________________________ Ataraid-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ataraid-list
