>But anyway it's interesting why the resulting sparse >files have different size on different fs?
That looks like a bug. Assuming you didn't see any seeks or writes fail, the file size on all filesystems should be 2^56 + 4. I suspect this is beyond the maximum file size allowed by the filesystem in some cases, so the write isn't happening, which means you should get a failure return code. In the results you showed, the filesize ends up being a little less than 2^48, which is not a place that you wrote ever. -- Bryan Henderson IBM Almaden Research Center San Jose CA Filesystems - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html