We're trying to share a directory that's mounted via NFS from another
server; when we connect to that share, smbd panics and tries to dump
core.
This is samba-3.0.30 on Alpha/Tru64-4.0G. The directory we're trying to
use is exported from a Linux box called sesfs (Centos 4.4) and
mounted on
the Alpha server via NFS as /sesfs/scratch. I've appended below an
edited
summary from log.smbd at debuglevel 3 showing an attempted connection
from
a Mac called redips. The process gets as far as call_trans2findfirst,
then reports internal error signal 6 (abort) and panics. It says it's
dumping core, but there's nothing written to the destination directory.
Here's the fstab entry that mounts the scratch directory:
/exavol/[EMAIL PROTECTED] /sesfs/scratch nfs rw,bg
And here's what the result looks like:
pangea ls -ld /sesfs/scratch
drwxrwxrwt 1 root system 4096 Jun 10 17:41 /sesfs/scratch
Here's the share definition in smb.conf:
[scratch]
comment = sesfs scratch directory
path = /sesfs/scratch
create mode = 0644
directory mode = 0755
guest ok = no
public = no
writable = yes
printable = no
Smbclient shows the share is available:
pangea smbclient -L pangea
Domain=[PANGEA] OS=[Unix] Server=[Samba 3.0.30]
Sharename Type Comment
- ---
scratch Disk sesfs scratch directory
IPC$IPC IPC Service (Samba 3.0.30 File
Server)
lanzDisk Home Directories
There are two complications to all this:
1. The Linux box, sesfs, that exports the scratch directory is
actually
an ExaStore NAS system, comprising a 2-node linux cluster connected to
a big RAID. The NFS code may have been customized for that environment.
2. The samba daemon doesn't always crash when the connection to the
scratch
share is first made -- sometimes the connection seems to succeed, but
then
smbd dies when you first attempt to do a data transfer. In other
words, the
behavior is not 100% repeatable.
(If you want to see the unedited log file, I put it on the web at
http://www.stanford.edu/~lanz/samba-log.full)
[2008/06/30 09:12:44, 2, pid=19041, effective(0, 0), real(0, 0)] smbd/
reply.c:(3
23)
netbios connect: name1=PANGEA name2=REDIPS
[2008/06/30 09:12:49, 3, pid=19041, effective(0, 0), real(0, 0)] auth/
auth.c:(22
3)
check_ntlm_password: mapped user is: [EMAIL PROTECTED]
[2008/06/30 09:12:49, 3, pid=19041, effective(0, 0), real(0, 0)] auth/
auth.c:(26
9)
check_ntlm_password: sam authentication for user [LANZ] succeeded
[2008/06/30 09:12:49, 2, pid=19041, effective(0, 0), real(0, 0)] auth/
auth.c:(30
4)
check_ntlm_password: authentication for user [LANZ] - [LANZ] -
[lanz] succe
eded
[2008/06/30 09:12:49, 3, pid=19041, effective(0, 0), real(0, 0)] smbd/
password.c
:(354)
Adding homes service for user 'lanz' using home directory: '/home/
sysop/lanz'
[2008/06/30 09:12:49, 3, pid=19041, effective(0, 0), real(0, 0)]
param/loadparm.
c:(2682)
adding home's share [lanz] for user 'lanz' at '/home/sysop/lanz'
[2008/06/30 09:12:49, 3, pid=19041, effective(0, 0), real(0, 0)] smbd/
service.c:
(805)
Connect path is '/sesfs/scratch' for service [scratch]
[2008/06/30 09:12:49, 3, pid=19041, effective(0, 0), real(0, 0)] smbd/
vfs.c:(95)
Initialising default vfs hooks
[2008/06/30 09:12:49, 3, pid=19041, effective(0, 0), real(0, 0)] smbd/
vfs.c:(128
)
Initialising custom vfs hooks from [/[Default VFS]/]
[2008/06/30 09:12:49, 1, pid=19041, effective(2104, 601), real(0, 0)]
smbd/servi
ce.c:(1033)
redips (171.64.171.122) connect to service scratch initially as
user lanz (uid
=2104, gid=601) (pid 19041)
[2008/06/30 09:12:49, 3, pid=19041, effective(0, 0), real(0, 0)] smbd/
reply.c:(5
73)
tconX service=SCRATCH
[2008/06/30 09:12:49, 3, pid=19041, effective(0, 0), real(0, 0)] smbd/
process.c:
(1069)
Transaction 4 of length 74
[2008/06/30 09:12:49, 3, pid=19041, effective(0, 0), real(0, 0)] smbd/
process.c:
(927)
switch message SMBtrans2 (pid 19041) conn 0x14018e050
[2008/06/30 09:12:49, 3, pid=19041, effective(2104, 601), real(0, 0)]
smbd/trans
2.c:(2285)
call_trans2qfsinfo: level = 261
[2008/06/30 09:12:49, 3, pid=19041, effective(2104, 601), real(0, 0)]
smbd/proce
ss.c:(1069)
Transaction 5 of length 92
[2008/06/30 09:12:49, 3, pid=19041, effective(2104, 601), real(0, 0)]
smbd/proce
ss.c:(927)
switch message SMBntcreateX (pid 19041) conn 0x14018e050
[2008/06/30 09:12:49, 3, pid=19041, effective(2104, 601), real(0, 0)]
smbd/dosmo
de.c:(142)
unix_mode(.) returning 0755
[2008/06/30 09:12:49, 3, pid=19041, effective(2104, 601), real(0, 0)]
smbd/proce
ss.c:(1069)
Transaction 6 of length 88
[2008/06/30 09:12:49, 3, pid=19041, effective(2104, 601), real(0, 0)]
smbd/proce
ss.c:(927)
switch message SMBnttrans (pid 19041) conn 0x14018e050
[2008/06/30 09:12:49, 3, pid=19041, effective(2104, 601),
