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XFS AG disk layout described on official doc is wrong

To: xfs@xxxxxxxxxxx
Subject: XFS AG disk layout described on official doc is wrong
From: Jeff Liu <jeff.liu@xxxxxxxxxx>
Date: Fri, 09 Nov 2012 14:47:41 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120912 Thunderbird/15.0.1
Hello,

I observed that there is an issue on our official DOC for AG disk
layout, which can be found at:
http://xfs.org/docs/xfsdocs-xml-dev/XFS_Filesystem_Structure//tmp/en-US/html/Allocation_Groups.html

It shows that the IBT block is followed by the block where AGFL sector
resides.  However, it should be followed by the
CNT block according to my debug, like below:

-------------------------------
superblock
AG free block info
AG inode B+tree info
AG internal free list
-------------------------------
Root of free space B+tree
  B+tree key is block number
-------------------------------
Root of free space B+tree
  B+tree key is block count
--------------------------------
Root of inodes B+tree
--------------------------------

Maybe the DOC is old, or am I missing anything?  If not, can we correct it?


Thanks,
-Jeff

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