Problem [1.7]: Inconsistent and wrong results from e.g. ls and md5sum

[Fergus]

I am having ongoing problems with file processing using [1.7] with W7 on FAT32. The problems are not specific to ls and md5sum but may serve to illustrate a deeper problem. Of course it might be the W7/FAT32 platform that is inducing the poor behaviours but I would like to try to gather evidence one way or the other.

$ find . -type f | xargs md5sum | grep d41d8cd9

$ find . -type f | xargs md5sum | grep d41d8cd9


(. is a very large subdirectory containing many very large files.)



$ ls -alR | sed '/^d/d' | grep " 0 "
/bin/ls: ./tetex/libkpathsea3/..: Not a directory
$ ls -alR | sed '/^d/d' | grep " 0 "
/bin/ls: ./GNOME/GConf2/GConf2-devel/.: Unknown error 3221225768
/bin/ls: ./X11/XmHTML/libXmHTML0/..: Unknown error 3221225768
/bin/ls: ./_obsolete/octave-headers: Unknown error 3221225768
$ ls -alR | sed '/^d/d' | grep " 0 "
/bin/ls: ./automake/automake1.4: Unknown error 3221225768





$ cygcheck -srv > cygcheck.srv
/usr/bin/cygrunsrv: warning: OpenService failed for 'DcomLaunch':
Win32 error 5
Access is denied.
/usr/bin/cygrunsrv: warning: OpenService failed for 'odserv':
Win32 error 5
Access is denied.
/usr/bin/cygrunsrv: warning: OpenService failed for 'ose':
Win32 error 5
Access is denied.
/usr/bin/cygrunsrv: warning: OpenService failed for 'pla':
Win32 error 5
Access is denied.
/usr/bin/cygrunsrv: warning: OpenService failed for 'QWAVE':
Win32 error 5
Access is denied.
/usr/bin/cygrunsrv: warning: OpenService failed for 'RpcEptMapper':
Win32 error 5
Access is denied.
/usr/bin/cygrunsrv: warning: OpenService failed for 'RpcSs':
Win32 error 5
Access is denied.

Fergus

1) md5sum shows some files as empty when they are not. When the command is repeated, different files are wrongly identified: d41d8cd98f00b204e9800998ecf8427e *./_update-info-dir/_update-info-dir-00820-1-src.tar.bz2 d41d8cd98f00b204e9800998ecf8427e *./gmp/libgmp-devel/libgmp-devel-4.3.0-1.tar.bz2 d41d8cd98f00b204e9800998ecf8427e *./libggi/libggiwmh0/libggiwmh0-display-x/libggiwmh0-display-x-0.3.2-2.tar.bz2 2) If I use ls to see whether, here too, there are any files of size 0 wrongly identified, I get Is there some way I can strace these commands or in any way provide useful illumination to the problem? I am using W7 OS, FAT32 filesystem. I have downloaded and used (successfully) every current version of Cygwin since about 2001 but am having such chronic difficulty with [1.7] on this platform that I think I will probably revert to the more or less stationery 1.5.25, which would be a great blow. (And "not optimised" for W7?) cygcheck attached. By the way I also got this output when running cygcheck -srv

cygcheck.srv.bz2
Description: Binary data

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