Hi there,

I use dovecot on a server with some Nightmare File Systerm (aka NFS) storage. When I delete a folder, its content gets deleted, but the folder itself does not.

Here's what I found:

#### Step 1: From a shell, telnet to imap, then create a folder cpetrescu@cpetrescu-mobile:~$ telnet server1.localdomain 143 Trying 10.200.28.36... Connected to server1.localdomain. Escape character is '^]'.

• OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN AUTH=LOGIN] Dovecot ready. 01 login testuser1 Password 01 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS] Logged in 02 create INBOX/F1 02 OK Create completed.

Step2: On the server, everything is OK, the folder is there

[server1: testuser1]# ls -lrtA Maildir/INBOX/ total 4 drwxr-xr-x 5 root root 4096 Dec 5 10:28 F1 [server1: testuser1]# ls -lrtA Maildir/INBOX/F1/ total 12 drwxr-xr-x 2 root root 4096 Dec 5 10:28 tmp drwxr-xr-x 2 root root 4096 Dec 5 10:28 new drwxr-xr-x 2 root root 4096 Dec 5 10:28 cur

#### Step3: in the telnet session, delete the folder 03 delete INBOX/F1 03 OK Delete completed.

#### Step4: On the server, the content of the folder is gone, but the folder is still there [server1: testuser1]# ls -lrtA Maildir/INBOX/ total 4 drwxr-xr-x 2 root root 4096 Dec 5 10:29 F1 [server1: testuser1]# ls -lrtA Maildir/INBOX/F1/ total 0

#### Debugging: I defined my own my_delete_dir and added it to the delete_dir list in mailbox_list_vfuncs In my_delete_dir I just call readdir on that folder, and print the files via syslog.

Here's the content of F1 before calling delete_dir:

Dec 05 10:29:14 imap(testuser1): my_delete_dir: d_name: "new" inode: 843617 Dec 05 10:29:14 imap(testuser1): my_delete_dir: d_name: "tmp" inode: 843623 Dec 05 10:29:14 imap(testuser1): my_delete_dir: d_name: "cur" inode: 843616 Dec 05 10:29:14 imap(testuser1): my_delete_dir: d_name: "dovecot.index.log" inode: 2363059 Dec 05 10:29:14 imap(testuser1): my_delete_dir: d_name: "." inode: 843612 Dec 05 10:29:14 imap(testuser1): my_delete_dir: d_name: ".." inode: 807717

And here's its content after calling delete_dir

Dec 05 10:29:15 imap(testuser1): my_delete_dir: name: INBOX/F1 Dec 05 10:29:15 imap(testuser1): my_delete_dir: path: /data/testuser1/Maildir/INBOX/F1 Dec 05 10:29:15 imap(testuser1): my_delete_dir: ret: -1 Dec 05 10:29:15 imap(testuser1): my_delete_dir: error: "Directory not empty" trying again Dec 05 10:29:15 imap(testuser1): my_delete_dir: d_name: "." inode: 843612 Dec 05 10:29:15 imap(testuser1): my_delete_dir: d_name: ".." inode: 807717 Dec 05 10:29:15 imap(testuser1): my_delete_dir: d_name: ".nfs0000000000240eb3000000e0" inode: 2363059 Dec 05 10:29:15 imap(testuser1): my_delete_dir: ret: -1

So, the dovecot.index.log was deleted, but it's still open, and the folder can't be deleted because of the pesky .nfs* file.

Now, the question: Is there a *magic* function that closes "dovecot.index.log" that I can call before delete_dir()? I tried mailbox_log_close() but it didn't help.

Thanks a lot.

p.s. Please don't suggest that I should not use NFS! I know that, and I don't really like NFS, but I have no other choice.

Catalin Petrescu