[Samba] Can't kill smbd process
Hi,
Since this week my Samba keep accumulating smbd process that keep lock on
files and neither me as root or samba itself can't kill. The only way to
release the locked files is to reboot the machine and this is really
annoying for all the clients. I read in a forum that this might be link with
a kernel corruption, but this threads hasn't been active in a long time and
wasn't so clear about the corruption. So I turn on your experiences and
knowledge to help me find a solution to this problem.
I run Samba 3.0.26a-3.5 on Opensuse 10.3 with the 2.6.22.17-0.1-default.
I don't thing the problem come from my smb.conf, the deadtime is set to 10
minutes but since those process keep a lock on files they are not kill after
10 minutes of inactivity.
[global]
workgroup = Bidon
server string = PDC - File Server
log file = /log/samba.log
server signing = auto
deadtime = 10
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
printcap name = cups
add machine script = /usr/sbin/useradd -c Machine -d /var/lib/nobody
-s /bin/false %m$
logon path = \\%L\profiles\.msprofile
logon drive = P:
logon home = \\%L\%U\.9xprofile
domain logons = Yes
preferred master = Yes
domain master = Yes
wins proxy = Yes
wins server = eth0:10.0.0.11
wins support = Yes
ldap ssl = no
acl group control = Yes
profile acls = Yes
map acl inherit = Yes
printing = cups
cups options = raw
print command =
lpq command = %p
lprm command =
store dos attributes = Yes
strict locking = Yes
include = /etc/samba/dhcp.conf
[data]
comment = data
path = /data/data
read only = No
inherit permissions = Yes
inherit acls = Yes
inherit owner = Yes
use sendfile = Yes
dos filemode = Yes
dos filetime resolution = Yes
[email]
path = /data/email/
read only = No
browseable = No
blocking locks = No
locking = No
oplocks = No
level2 oplocks = No
posix locking = No
strict locking = No
dos filemode = Yes
dos filetime resolution = Yes
Thank you,
Mathieu Beaudoin
Responsable des T.I.
CVT Corp
Technologies de vitesse variable
Variable Speed Technologies
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RE: [Samba] Can't kill smbd process
TCP_NODELAY is still usefull and has a noticeable improvement in
responsiveness. SO_RCVBUF=8192 and SO_SNDBUF=8192 are outdated and
actually make things worse if running with a 2.6 kernel (they do help if
running on a 2.4 kernel). But I too, am sure changing these will not
fix your problem (but probably will improve network performance).
How are you killing the open files? With "kill -9"? I kill locked,
open files by finding the pid with lsof and then close it with "sudo
kill -9 pidnumber". I've never had kill -9 fail me and I imagine you
would have to have serious kernel problems if kill -9 failed to kill a
pid.3
James
-----Original
Message----------------------------------------------------
From: samba-bounces+jdinkel=bucoks.com@lists.samba.org
[mailto:samba-bounces+jdinkel=bucoks.com@lists.samba.org] On Behalf Of
Ryan Novosielski
Sent: Friday, April 18, 2008 3:55 PM
To: [email]samba@lists.samba.org[/email]
Subject: Re: [Samba] Can't kill smbd process
I've seen written here many times that the TCP options are old/no longer
needed. Not that I expect that removing them will fix anything.
Seems to me you have an awful lot things defined specifically there. I
don't know how those relate to the defaults. Or is that testparm -v
output?
- --
---- _ _ _ _ ___ _ _ _
|Y#| | | |\/| | \ |\ | | |Ryan Novosielski - Systems Programmer II
|$&| |__| | | |__/ | \| _| |novosirj@umdnj.edu - 973/972.0922 (2-0922)
\__/ Univ. of Med. and Dent.|IST/AST - NJMS Medical Science Bldg - C630
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Re: [Samba] Can't kill smbd process
On 4/21/2008, James A. Dinkel (jdinkel@bucoks.com) wrote:[color=blue]
> TCP_NODELAY is still usefull and has a noticeable improvement in
> responsiveness.[/color]
this is contrary to what the Samba devs have repeatedly said in the past.
I hope someone will chime in here and set the record straight...
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Best regards,
Charles
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RE: [Samba] Can't kill smbd process
I meant to specify: it has a noticeable improvement ON MY SYSTEM. This
is from a personal, subjective view and I don't know that I've verified
this from any other documentation. I just want to point this out
because it COULD have been all in my head. I don't think overall
transfer speed changed, but directory listings and opening up small
files seemed to be faster.
James
P.S. Sorry for the formatting, but I'm posting this from Outlook which
is not very mailing-list-friendly.
-----Original
Message-----------------------------------------------------
From: Charles Marcus [mailto:CMarcus@Media-Brokers.com]
Sent: Monday, April 21, 2008 11:22 AM
To: James A. Dinkel
Cc: [email]samba@lists.samba.org[/email]
Subject: Re: [Samba] Can't kill smbd process
On 4/21/2008, James A. Dinkel (jdinkel@bucoks.com) wrote:[color=blue]
> TCP_NODELAY is still usefull and has a noticeable improvement in
> responsiveness.[/color]
this is contrary to what the Samba devs have repeatedly said in the
past.
I hope someone will chime in here and set the record straight...
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Best regards,
Charles
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Re: [Samba] Can't kill smbd process
On Mon, Apr 21, 2008 at 12:21:59PM -0400, Charles Marcus wrote:[color=blue]
> On 4/21/2008, James A. Dinkel (jdinkel@bucoks.com) wrote:[color=green]
> >TCP_NODELAY is still usefull and has a noticeable improvement in
> >responsiveness.[/color]
>
> this is contrary to what the Samba devs have repeatedly said in the past.
>
> I hope someone will chime in here and set the record straight...[/color]
That's easy -- TCP_NODELAY is default :-)
Volker
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Re: [Samba] Can't kill smbd process
On 4/21/2008 3:51 PM, Volker Lendecke wrote:[color=blue]
> On Mon, Apr 21, 2008 at 12:21:59PM -0400, Charles Marcus wrote:[color=green]
>> On 4/21/2008, James A. Dinkel (jdinkel@bucoks.com) wrote:[color=darkred]
>>> TCP_NODELAY is still usefull and has a noticeable improvement in
>>> responsiveness.[/color][/color][/color]
[color=blue][color=green]
>> this is contrary to what the Samba devs have repeatedly said in the past.
>>
>> I hope someone will chime in here and set the record straight...[/color][/color]
[color=blue]
> That's easy -- TCP_NODELAY is default :-)[/color]
Well that explains it... :) thanks...
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Best regards,
Charles
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RE: [Samba] Can't kill smbd process
Hi,
Sorry for not responding in a long time, I been really busy these days.
To kill the process, I use "kill -9 <pid of the smbd process>" as root and
it do nothing, no error message and the process still run.
I found the possible source of this problem : each night we have a backup
server (running opensuse 10.3) that connect to the file server (mount -t
cifs ...) copy the files on his own hard drive, umount the share and then
start transferring the files on tapes. When I check the swat status page in
the morning and "ps aux | greo smbd", I got like 20 process or more coming
for the backup server file transfer and all those process can't be kill by
"sudo kill -9 pid". From this point some smbd process, that are created by
normal user use, can't die either and keeps lock on files. One night, I
shutdown the backup server and the next day every thing was working
normally, no unkillable process.
Thank you,
Mathieu Beaudoin
Responsable des T.I.
CVT Corp
Technologies de vitesse variable
Variable Speed Technologies
-----Message d'origine-----
De*: James A. Dinkel [mailto:jdinkel@bucoks.com]
Envoyé*: 21 avril 2008 11:43
À*: [email]samba@lists.samba.org[/email]
Objet*: RE: [Samba] Can't kill smbd process
TCP_NODELAY is still usefull and has a noticeable improvement in
responsiveness. SO_RCVBUF=8192 and SO_SNDBUF=8192 are outdated and
actually make things worse if running with a 2.6 kernel (they do help if
running on a 2.4 kernel). But I too, am sure changing these will not
fix your problem (but probably will improve network performance).
How are you killing the open files? With "kill -9"? I kill locked,
open files by finding the pid with lsof and then close it with "sudo
kill -9 pidnumber". I've never had kill -9 fail me and I imagine you
would have to have serious kernel problems if kill -9 failed to kill a
pid.3
James
-----Original
Message----------------------------------------------------
From: samba-bounces+jdinkel=bucoks.com@lists.samba.org
[mailto:samba-bounces+jdinkel=bucoks.com@lists.samba.org] On Behalf Of
Ryan Novosielski
Sent: Friday, April 18, 2008 3:55 PM
To: [email]samba@lists.samba.org[/email]
Subject: Re: [Samba] Can't kill smbd process
I've seen written here many times that the TCP options are old/no longer
needed. Not that I expect that removing them will fix anything.
Seems to me you have an awful lot things defined specifically there. I
don't know how those relate to the defaults. Or is that testparm -v
output?
- --
---- _ _ _ _ ___ _ _ _
|Y#| | | |\/| | \ |\ | | |Ryan Novosielski - Systems Programmer II
|$&| |__| | | |__/ | \| _| |novosirj@umdnj.edu - 973/972.0922 (2-0922)
\__/ Univ. of Med. and Dent.|IST/AST - NJMS Medical Science Bldg - C630
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bTXN5/lgADDY5qywZKJEzp0=
=IXls
-----END PGP SIGNATURE-----
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Re: [Samba] Can't kill smbd process
Mathieu Beaudoin wrote:[color=blue]
> Hi,
> Sorry for not responding in a long time, I been really busy these days.
>
> To kill the process, I use "kill -9 <pid of the smbd process>" as root and
> it do nothing, no error message and the process still run.
>
> I found the possible source of this problem : each night we have a backup
> server (running opensuse 10.3) that connect to the file server (mount -t
> cifs ...) copy the files on his own hard drive, umount the share and then
> start transferring the files on tapes. When I check the swat status page in
>[/color]
rsync would be a much, much better choice for that purpose.
--
Toby Bluhm
Alltech Medical Systems America, Inc.
30825 Aurora Road Suite 100
Solon Ohio 44139
440-424-2240
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