[Samba] RE: NFS mounted directory

[ALLEN, David]

Hi,

We may have solved this problem by switching the NFS mount from tcp to udp
(specify proto=udp in vfstab). 

Has anyone any suggestions why this should solve the problem, and are there
any disadvantages?

Thanks in advance.

David

> -----Original Message-----
> From:	ALLEN, David 
> Sent:	03 December 2004 17:47
> To:	'samba at lists.samba.org'
> Subject:	NFS mounted directory
> 
> Hi,
> 
> Has anyone any ideas what is causing my smbd processes to crash? The files
> being accessed via samba are on an NFS mounted directory. In the samba log
> file I am getting the following errors:
> 
> [2004/12/03 16:31:33, 0] smbd/oplock.c:request_oplock_break(1026)
>   request_oplock_break: no response received to oplock break request to
> pid 2181
> 9 on port 53336 for dev = 2c00002, inode = 297939333
>   for dev = 2c00002, inode = 297939333, tv_sec = 41b09217, tv_usec = 2be1b
> [2004/12/03 16:31:33, 0] smbd/open.c:open_mode_check(555)
>   open_mode_check: exlusive oplock left by process 21819 after break ! For
> file
> 5000_photos/Thumbs.db, dev = 2c00002, inode = 297939333. Deleting it to
> continue
> ...
> [2004/12/03 16:31:33, 0] lib/util.c:smb_panic(1055)
>   PANIC: open_mode_check: Existant process 21819 left active oplock.
> 
> and a truss -d for the process  which has crashed gives the following:
> 
>   *** SUID: ruid/euid/suid = 0 / 2053 / 2053  ***
>     *** SGID: rgid/egid/sgid = 0 / 500 / 500  ***
> poll(0xFFBEED08, 2, 32000)      (sleeping...)
> poll(0xFFBEED08, 2, 32000)                      = 0
> time()                                          = 1102092631
> getuid()                                        = 0 [2053]
> write(25, " [", 1)                              = 1
> write(25, " 2 0 0 4 / 1 2 / 0 3   1".., 19)     = 19
> write(25, " ,   0", 3)                          = 3
> write(25, " ]  ", 2)                            = 2
> write(25, " s m b d / o p l o c k .".., 13)     = 13
> write(25, " :", 1)                              = 1
> write(25, " r e q u e s t _ o p l o".., 20)     = 20
> write(25, " (", 1)                              = 1
> write(25, " 1 0 2 6", 4)                        = 4
> write(25, " )\n", 2)                            = 2
> getuid()                                        = 0 [2053]
> write(25, "     r e q u e s t _ o p".., 133)    = 133
> getuid()                                        = 0 [2053]
> write(25, "     f o r   d e v   =  ".., 75)     = 75
> fcntl(14, F_SETLKW64, 0xFFBEEEA8)               = 0
> time()                                          = 1102092631
> getuid()                                        = 0 [2053]
> write(25, " [", 1)                              = 1
> write(25, " 2 0 0 4 / 1 2 / 0 3   1".., 19)     = 19
> write(25, " ,   0", 3)                          = 3
> write(25, " ]  ", 2)                            = 2
> write(25, " s m b d / o p e n . c", 11)         = 11
> write(25, " :", 1)                              = 1
> write(25, " o p e n _ m o d e _ c h".., 15)     = 15
> write(25, " ( 5 5 5", 4)                        = 4
> write(25, " )\n", 2)                            = 2
> getuid()                                        = 0 [2053]
> write(25, "     o p e n _ m o d e _".., 164)    = 164
> kill(21819, SIG#0)                              = 0
> time()                                          = 1102092631
> getuid()                                        = 0 [2053]
> write(25, " [", 1)                              = 1
> write(25, " 2 0 0 4 / 1 2 / 0 3   1".., 19)     = 19
> write(25, " ,   0", 3)                          = 3
> write(25, " ]  ", 2)                            = 2
> write(25, " l i b / u t i l . c", 10)           = 10
> write(25, " :", 1)                              = 1
> write(25, " s m b _ p a n i c", 9)              = 9
> write(25, " (", 1)                              = 1
> write(25, " 1 0 5 5", 4)                        = 4
> write(25, " )\n", 2)                            = 2
> getuid()                                        = 0 [2053]
> write(25, "     P A N I C :   o p e".., 69)     = 69
> getuid()                                        = 0 [2053]
> write(25, "    \n", 3)                          = 3
> getuid()                                        = 0 [2053]
> sigaction(SIGABRT, 0x00000000, 0xFFBEEFB0)      = 0
> llseek(0, 0, SEEK_CUR)                          = 0
> sigaction(SIGABRT, 0xFFBEEE80, 0xFFBEEF00)      = 0
> sigprocmask(SIG_UNBLOCK, 0xFFBEEF30, 0x00000000) = 0
> getpid()                                        = 22241 [21295]
> kill(22241, SIGABRT)                            = 0
>     Received signal #6, SIGABRT [default]
>       siginfo: SIGABRT pid=22241 uid=0
>         *** process killed ***
> 
> In samba I have all op locks options turned on. Is the NFS directory( on a
> snap server) not responding correctly to the op locks, or is there another
> problem?
> 
> Thanks in advance.
> 
> David