On Tue, May 08, 2012 at 03:21:31PM +0800, Busby wrote: > I have tested that the blocks were reused in the other thin-lun of > this pool when deleted a thin-lun . > How can the blocks allocated for the thin-lun be dynamically > reclaimed? (use some method like 'discard' to tell the pool which > block should be reclaimed and whether the pool can reclaim it ?). > When I mounted a filesystem on a thin-lun, create 4G bytes file > firstly, the pool have decreased 4G space, then I deleted the file, > the pool did not increase the size as I thought, after this, create a > 5G file, then the pool would decrease 1G size. So I think if the Have you enabled discard support in both the thin-pool _and_ the filesystem? Have you confirmed that the filesystem issues the discard in your test scenario? (eg, via blktrace). - Joe -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
