2009/6/2 Chris Mason <chris.mason@xxxxxxxxxx> > > Hello everyone, > > Yan Zheng has been doing some major surgery to the back references and > extent allocation code, tackling bottlenecks in the code that tracks > extents. It scales better with many snapshots and performs better in > the common case of no snapshots at all. > > THE NEW CODE IS A FORWARD ROLLING DISK FORMAT CHANGE. This means it is > compatible with the current btrfs disk format, but once you mount a > filesystem with the new code, it WILL NO LONGER BE MOUNTABLE FROM OLD > KERNELS. Old kernels spit out an error message when you try them on new > format filesystems. > Hello, everyone I have a minor disk format change for the new format. The disk format change makes snapshot dropping more efficient. The format change only affects FS has been balanced. If you are testing the new format, please don't use btrfs-vol -b or btrfs-vol -r. If you have already used btrfs-vol -b or btrfs-vol -r, please backup your data. Regards Yan Zheng -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
