Quoting Vincent Lefevre (vinc...@vinc17.net): > On 2015-04-15 14:13:43 -0500, David Wright wrote: > > Quoting Kushal Kumaran (kus...@locationd.net): > > > Moving entries around breaks ongoing readdir operations. If a readdir > > > has gone past the file being removed, and you moved the last entry > > > there, the entry being moved would be missed, despite *it* not being the > > > entry added or removed. > > > > I don't think this matters. There's no guarantee that another process > > isn't writing to that directory while you are working your way along > > the entries. > > But with the current solution (no automatic moving of an entry), you > can't miss an entry that hasn't been removed.
$ mkdir /tmp/testdir ~ $ mkdir /tmp/testdir/file1 ~ $ mkdir /tmp/testdir/file2 ~ $ mkdir /tmp/testdir/file3 ~ $ mkdir /tmp/testdir/file4 ~ $ mkdir /tmp/testdir/file5 ~ $ ls -lU /tmp/testdir/ total 20 drwxr-x--- 2 david david 4096 Apr 20 12:53 file1 drwxr-x--- 2 david david 4096 Apr 20 12:54 file4 drwxr-x--- 2 david david 4096 Apr 20 12:54 file5 drwxr-x--- 2 david david 4096 Apr 20 12:54 file2 drwxr-x--- 2 david david 4096 Apr 20 12:54 file3 ~ $ mv -i /tmp/testdir/file4 /tmp/testdir/file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4 ~ $ ls -lU /tmp/testdir/ total 20 drwxr-x--- 2 david david 4096 Apr 20 12:53 file1 drwxr-x--- 2 david david 4096 Apr 20 12:54 file5 drwxr-x--- 2 david david 4096 Apr 20 12:54 file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4file4 drwxr-x--- 2 david david 4096 Apr 20 12:54 file2 drwxr-x--- 2 david david 4096 Apr 20 12:54 file3 ~ $ ...so if you happen to be reading the entry for file5 at the time I typed mv, you'll get the entry for file4 twice, under two different names. (Or the opposite.) Cheers, David. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20150420180441.GC10624@alum
