Backport #9567: FileUtils.mv cannot move to an NFS directory when the source contains a relative symlink

• Status: Closed
• Priority: Normal
• Assignee: -

[aparker42 (Andrew Parker)]

root@local-gravityapple:/home/www# mkdir /tmp/testing
root@local-gravityapple:/home/www# cd /tmp/testing
root@local-gravityapple:/tmp/testing# echo "file" > file
root@local-gravityapple:/tmp/testing# ln -s file link
root@local-gravityapple:/tmp/testing# ls -l
total 4
-rw-r--r-- 1 root root 5 Feb 25 19:01 file
lrwxrwxrwx 1 root root 4 Feb 25 19:01 link -> file
root@local-gravityapple:/tmp/testing# cd -
/home/www
root@local-gravityapple:/home/www# ruby -rfileutils -e 'FileUtils.mv("/tmp/testing", "/home/www")'
/usr/lib/ruby/1.9.1/fileutils.rb:1379:in utime': No such file or directory - /home/www/testing/link (Errno::ENOENT)
from /usr/lib/ruby/1.9.1/fileutils.rb:1379:incopy_metadata'
from /usr/lib/ruby/1.9.1/fileutils.rb:466:in block in copy_entry'
from /usr/lib/ruby/1.9.1/fileutils.rb:1433:inpreorder_traverse'
from /usr/lib/ruby/1.9.1/fileutils.rb:462:in copy_entry'
from /usr/lib/ruby/1.9.1/fileutils.rb:521:inrescue in block in mv'
from /usr/lib/ruby/1.9.1/fileutils.rb:518:in block in mv'
from /usr/lib/ruby/1.9.1/fileutils.rb:1515:inblock in fu_each_src_dest'
from /usr/lib/ruby/1.9.1/fileutils.rb:1529:in fu_each_src_dest0'
from /usr/lib/ruby/1.9.1/fileutils.rb:1513:infu_each_src_dest'
from /usr/lib/ruby/1.9.1/fileutils.rb:508:in mv'
from -e:1:in'
root@local-gravityapple:/home/www# ruby --version
ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]
root@local-gravityapple:/home/www# cat /etc/debian_version
7.0

If the same exercise is done, but the link symlink is made as using the absolute path (/tmp/testing/file) then FileUtils.mv succeeds. This only seems to affect NFS mounts. Moving to a non-NFS mounted location with the relative link works.

It seems that it is copying the link first and then failing while trying to resolve the copied link. The destination location contains the symlink:

root@local-gravityapple:/home/www# ls -l testing/
total 4
lrwxrwxrwx 1 504 dialout 4 Feb 25 19:02 link -> file

[nobu (Nobuyoshi Nakada)]

• Tracker changed from Bug to Backport
• Project changed from Ruby master to Backport193

Fixed by r35499.

[jeremyevans0 (Jeremy Evans)]

• Status changed from Open to Closed