Hi folks I knew this is reported before but seems no much discussion on it. I met a failure when creating 18th snapshot on my volume. the error is in kcopyd_client_create(), seems alloc_page fails. i know there is 1MB ram for each dm snapshot, but this is only 18th snapshot, so around 18MB, not a big number on my 392MB ram box. i check free and there are still ~200MB available. it is a fedora core 2 box with 2.6.8 kernel and lvm2. but i donot think this is a fc specific problem. thanks. Ming