Hello, cwfs64x shows curious mtime in dump. my experiment is only on cwfs64x. I don't know other cwfs. fossil is OK.
standing on general rule of unix and plan9, mtime of directory should be the time that the contents are modified. # # fossil # ar% ls -ld /n/dump d-r-xr-xr-x M 538590 adm adm 0 Dec 31 2003 /n/dump/2003 d-r-xr-xr-x M 538590 adm adm 0 Dec 31 2004 /n/dump/2004 d-r-xr-xr-x M 538590 adm adm 0 Dec 31 2005 /n/dump/2005 d-r-xr-xr-x M 538590 adm adm 0 Dec 31 2006 /n/dump/2006 d-r-xr-xr-x M 538590 adm adm 0 Dec 31 2007 /n/dump/2007 d-r-xr-xr-x M 538590 adm adm 0 Dec 31 2008 /n/dump/2008 d-r-xr-xr-x M 538590 adm adm 0 Dec 31 2009 /n/dump/2009 d-r-xr-xr-x M 538590 adm adm 0 Dec 30 2010 /n/dump/2010 d-r-xr-xr-x M 538590 adm adm 0 Dec 31 2011 /n/dump/2011 d-r-xr-xr-x M 538590 adm adm 0 Dec 31 13:00 /n/dump/2012 d-r-xr-xr-x M 538590 adm adm 0 Feb 24 13:00 /n/dump/2013 ar% ls -ld /n/dump d-r-xr-xr-x M 538590 adm adm 0 Jan 1 13:00 /n/dump ar% ls -l /n/dump/2013 ... d-r-xr-xr-x M 538590 adm adm 0 Feb 20 13:00 /n/dump/2013/0220 d-r-xr-xr-x M 538590 adm adm 0 Feb 21 13:00 /n/dump/2013/0221 d-r-xr-xr-x M 538590 adm adm 0 Feb 22 13:00 /n/dump/2013/0222 d-r-xr-xr-x M 538590 adm adm 0 Feb 23 13:00 /n/dump/2013/0223 d-r-xr-xr-x M 538590 adm adm 0 Feb 24 13:00 /n/dump/2013/0224 ar% ls -ld /n/dump/2013 d-r-xr-xr-x M 538590 adm adm 0 Feb 24 13:00 /n/dump/2013 # this is OK because the last change is at the time 0224 is added. ar% # # cwfs64x # maia# ls -l /n/dump d-r-xr-xr-x M 160 adm adm 0 Aug 1 2012 /n/dump/2012 d-r-xr-xr-x M 160 adm adm 0 Jan 21 05:07 /n/dump/2013 maia# ls -ld /n/dump d-r-xr-xr-x M 160 adm adm 0 Jul 31 2012 /n/dump maia# ls -l /n/dump/2013 .... d-r-xr-xr-x M 160 adm adm 0 Feb 21 05:00 /n/dump/2013/0221 d-r-xr-xr-x M 160 adm adm 0 Feb 22 05:00 /n/dump/2013/0222 d-r-xr-xr-x M 160 adm adm 0 Feb 23 00:23 /n/dump/2013/0223 d-r-xr-xr-x M 160 adm adm 0 Feb 24 05:00 /n/dump/2013/0224 d-r-xr-xr-x M 160 adm adm 0 Feb 24 17:09 /n/dump/2013/02241 d-r-xr-xr-x M 160 adm adm 0 Feb 25 05:00 /n/dump/2013/0225 maia# ls -ld /n/dump/2013 d-r-xr-xr-x M 160 adm adm 0 Jan 21 05:07 /n/dump/2013 # this is NG because the last change is at the time 0225 is added. maia# Kenji Arisawa