I found a precise (and hopefully reproducible) report explaining exactly my problem:
http://samba.2283325.n4.nabble.com/Cifs-loop-large-files-and-umount- results-in-CIFS-VFS-No-writable-handles-for-inode-on-both-Ubuntu-ann- td2519992.html -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in Ubuntu. https://bugs.launchpad.net/bugs/775239 Title: loop device over samba breaks filesystem -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
