On Tue, 2010-09-28 at 17:44 -0400, Phillip Susi wrote: > On 9/28/2010 4:49 PM, Heinz Mauelshagen wrote: > > > > These are 2 new device mapper targets "thinp" and "thinp-dev" > > implemented in one module, which allow for thin provisioning of storage > > on a single host from a storage pool to an arbitrary amount of devices. > > How is this different than snapshotting a zero target? Like Hanness mentioned: you can free space. > > > +Create an ext4 filesystem on the thin provisioned device: > > +mkfs -t ext4 /dev/mapper/thinp1 > > FYI, that tends to spend a lot of time writing hundreds of mb of zeros > to the inode tables, allocating chunks from the backing store. You > might want to add -E lazy_itable_init to stop that. Thanks for the hint, I waned to have load on the thin provisioned devices so far for testing but will have a look at the reduced allocations with this option. > > -- > dm-devel mailing list > dm-devel@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/dm-devel -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
