Smbd internal error and panic with nfs-mounted share | |
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We're trying to share a directory that's mounted via NFS from anotherserver; 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 touse 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/scratch@sesfs /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)
lanz Disk 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: [PANGEA]\[LANZ]@[redips][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), real(0, 0)] smbd/nttra
ns.c:(2082) call_nt_transact_query_security_desc: file = ., info_wanted = 0x3[2008/06/30 09:12:49, 3, pid=19041, effective(2104, 601), real(0, 0)] passdb/loo
kup_sid.c:(1009)fetch sid from uid cache 0 -> S-1-5-21-1975590968-77483778-2269577258-1000 [2008/06/30 09:12:49, 3, pid=19041, effective(2104, 601), real(0, 0)] smbd/proce
ss.c:(1069) Transaction 7 of length 45[2008/06/30 09:12:49, 3, pid=19041, effective(2104, 601), real(0, 0)] smbd/proce
ss.c:(927) switch message SMBclose (pid 19041) conn 0x14018e050[2008/06/30 09:12:49, 3, pid=19041, effective(2104, 601), real(0, 0)] smbd/reply
.c:(3329) close directory fnum=4529[2008/06/30 09:12:49, 3, pid=19041, effective(2104, 601), real(0, 0)] smbd/proce
ss.c:(1069) Transaction 8 of length 74[2008/06/30 09:12:49, 3, pid=19041, effective(2104, 601), real(0, 0)] smbd/proce
ss.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 = 1[2008/06/30 09:12:49, 3, pid=19041, effective(2104, 601), real(0, 0)] smbd/proce
ss.c:(1069) Transaction 9 of length 130[2008/06/30 09:12:49, 3, pid=19041, effective(2104, 601), real(0, 0)] smbd/proce
ss.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:(1701)call_trans2findfirst: dirtype = 16, maxentries = 4, close_after_first=1, close _if_end = 2 requires_resume_key = 4 level = 0x104, max_data_bytes = 16644 [2008/06/30 09:12:49, 0, pid=19041, effective(2104, 601), real(0, 0)] lib/fault.
c:(41) ===============================================================[2008/06/30 09:12:49, 0, pid=19041, effective(2104, 601), real(0, 0)] lib/fault.
c:(42) INTERNAL ERROR: Signal 6 in pid 19041 (3.0.30) Please read the Trouble-Shooting section of the Samba3-HOWTO[2008/06/30 09:12:49, 0, pid=19041, effective(2104, 601), real(0, 0)] lib/fault.
c:(44) From: http://www.samba.org/samba/docs/Samba3-HOWTO.pdf[2008/06/30 09:12:49, 0, pid=19041, effective(2104, 601), real(0, 0)] lib/fault.
c:(45) ===============================================================[2008/06/30 09:12:49, 0, pid=19041, effective(2104, 601), real(0, 0)] lib/util.c
:(1632) PANIC (pid 19041): internal error[2008/06/30 09:12:49, 0, pid=19041, effective(2104, 601), real(0, 0)] lib/util.c
:(1787) unable to produce a stack trace on this platform[2008/06/30 09:12:49, 0, pid=19041, effective(0, 0), real(0, 0)] lib/ fault.c:(18
1) dumping core in /usr/local/samba/var/cores/smbd -- Kai Lanz Stanford University School of Earth Sciences -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
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