Hi, On Tue, Dec 03, 2013 at 02:55:23PM -0600, 杨苏立 Yang Su Li wrote: > I am trying to understand XFS a little bit better, especially its journal > process. Unfortunately, I am having trouble find documentation in this > regard. > > The general XFS documentation ( > http://xfs.org/docs/xfsdocs-xml-dev/XFS_Filesystem_Structure//tmp/en-US/html/index.html) > has been quite helpful, but it doesn't describe the journal part of XFS. I > also found some kernel documentation ablout XFS's delayed logging ( > https://www.kernel.org/doc/Documentation/filesystems/xfs-delayed-logging-design.txt), > which talks about the journal process a bit. But it seems to assume a lot > of prior knowledge of how the original XFS logging works to completely > understand what the author is talking about; and the term it uses (like > checkpoint) seem to have complete different meaning from, say, ext4. > > So I am wondering, is there some kind of (any kind of ) documentation on > XFS journaling? Ideally it will cover the major data structure and major > code flow, but even a very high level, incomplete overview would be better > than what I have now, which is essentially nothing. And if so, where can I > find it? The original design docs are posted here: http://oss.sgi.com/projects/xfs/design_docs/xfsdocs93_pdf/ log_mgr.pdf might be what you need. Regards, Ben _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
