On Sat, Jul 18, 2009 at 09:48:11AM +0200, Andi Kleen wrote: > > > Also, for filesystems like btrfs or ZFS the checking can be done > > online and incrementally without storing a full representation of > > the state in memory. > > You could, but I suspect it would be cheaper to just use a > 64bit system than to rewrite fsck. 64bit is available > for a lot of embedded setups these days too. We don't have to rewrite fsck; most of the framework for supporting an run-length-conding for compressed bitmaps is already in patches that add > 32-bit block numbers to e2fsprogs; we've just been more focused on getting 64-bit block numbers support merged than implementing compressed bitmaps, but it's only one file that would need to be added, and we might be able to steal the compressed bitmap support from xfsprogs --- which does this already. - Ted -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
