On 03/16/12 12:44 PM, Markus Falb wrote: > Note that this results in degraded write performance while the snapshot > is active. Basically you have to "double write", at least. and with LVM, an entire PP block has to be copied, right? those are generally much larger than file system blocks, 4MB to 16MB, I believe? thats kind of brutal. -- john r pierce N 37, W 122 santa cruz ca mid-left coast