[Samba] Abysmal performance with Samba 4 and Windows Explorer
Simon Schneider
schneida.simon at gmail.com
Thu Mar 6 00:01:30 MST 2014
Hi,
No I don't have any of these configured, they are never mentioned in the
Samba HowTo and as I don't want to have any of my users working on anything
else than windows, I thought it is optional? Do you think that might cause
my issues?
Thanks a lot for your input!
Am 06.03.2014 05:23 schrieb "Chan Min Wai" <dcmwai at gmail.com>:
> Dear Simon,
>
> Looking at your config.
>
> Do you have winbind/nslcd/sssd that work on the local unix for users
> authentication?
> Or basically can getent password and group show your AD users?
>
> Also I see some panic and also some issue in your samba log...
>
>
>
>
>
> On Thu, Mar 6, 2014 at 12:15 AM, Simon Schneider <schneida.simon at gmail.com
> > wrote:
>
>> One more thing, I tried mapping the drive again and using "xcopy /e" to
>> transfer a folder and while the copying itself was very fast (same
>> performance as xcopy) the initial mapping took ages (like 3 minutes) and
>> also each "dir" command blocked after being initially fast at displaying
>> each folder (like 30 or so) but then got blocked for like one minute
>> before
>> writing the last two lines (number of files + space available).
>>
>> This makes me think that samba is slow at reading file sizes, permissions,
>> users / groups or something like that of all the files. Is it a problem
>> that my share is on a LVM drive?
>> Output from mount command:
>>
>> /dev/mapper/abcserver-samba on /srv/samba type ext4
>> (rw,noatime,errors=remount-ro,user_xattr,barrier=1,data=ordered)
>>
>> Thanks!
>>
>>
>> 2014-03-05 16:24 GMT+01:00 Simon Schneider <schneida.simon at gmail.com>:
>>
>> > Sorry forgot about logs. I set log level = 0 in the smb.conf because I
>> > read some suggestions on the internet that logging may cause issues, but
>> > that didn't help either. What is a decent log level to get just enough
>> > debug to analyse this problem?
>> >
>> > I found this error message in log.smbd:
>> > [2014/03/05 09:27:39.052897, 0]
>> > ../source3/smbd/smbXsrv_open.c:1035(smbXsrv_open_close)
>> > smbXsrv_open_close(0x64966b36): failed to delete global key
>> '64966B36':
>> > NT_STATUS_NOT_FOUND
>> > [2014/03/05 09:27:39.052949, 0]
>> > ../source3/smbd/smbXsrv_open.c:759(smbXsrv_open_destructor)
>> > smbXsrv_open_destructor: smbXsrv_open_close() failed -
>> > NT_STATUS_NOT_FOUND
>> > [2014/03/05 09:27:39.053009, 0]
>> > ../source3/smbd/close.c:268(close_remove_share_mode)
>> > close_remove_share_mode: Could not get share mode lock for file
>> > Facebook-Seite/Präsentation1.gif
>> > [2014/03/05 09:27:39.053082, 0]
>> > ../source3/smbd/smbXsrv_open.c:1035(smbXsrv_open_close)
>> > smbXsrv_open_close(0xfbd9df83): failed to delete global key
>> 'FBD9DF83':
>> > NT_STATUS_NOT_FOUND
>> > [2014/03/05 09:27:39.053629, 0]
>> > ../source3/smbd/smbXsrv_open.c:759(smbXsrv_open_destructor)
>> > smbXsrv_open_destructor: smbXsrv_open_close() failed -
>> > NT_STATUS_NOT_FOUND
>> > [2014/03/05 09:27:39.053708, 0]
>> > ../source3/smbd/close.c:268(close_remove_share_mode)
>> > close_remove_share_mode: Could not get share mode lock for file
>> > Facebook-Seite/Thumbs.db
>> > [2014/03/05 09:27:39.053833, 0]
>> > ../source3/smbd/smbXsrv_open.c:1035(smbXsrv_open_close)
>> > smbXsrv_open_close(0x04caead4): failed to delete global key
>> '04CAEAD4':
>> > NT_STATUS_NOT_FOUND
>> > [2014/03/05 09:27:39.053895, 0]
>> > ../source3/smbd/smbXsrv_open.c:759(smbXsrv_open_destructor)
>> > smbXsrv_open_destructor: smbXsrv_open_close() failed -
>> > NT_STATUS_NOT_FOUND
>> > [2014/03/05 09:27:39.053945, 0]
>> > ../source3/smbd/close.c:1062(close_directory)
>> > close_directory: Could not get share mode lock for .
>> > [2014/03/05 09:27:39.053992, 1]
>> ../source3/smbd/service.c:1122(close_cnum)
>> > 10.10.20.25 (ipv4:10.10.20.25:61595) closed connection to service
>> Fotos
>> > [2014/03/05 09:27:39.054152, 0]
>> > ../source3/smbd/smbXsrv_tcon.c:1021(smbXsrv_tcon_disconnect_all)
>> > smbXsrv_tcon_disconnect_all: count[1] errors[1]
>> > first[NT_STATUS_NOT_FOUND]
>> > [2014/03/05 09:27:39.054467, 0]
>> > ../source3/smbd/server_exit.c:121(exit_server_common)
>> > Server exit (termination signal)
>> > [2014/03/05 09:27:39.054566, 0]
>> > ../source3/smbd/server_exit.c:124(exit_server_common)
>> > exit_server_common: smb1srv_tcon_disconnect_all() failed
>> > (NT_STATUS_NOT_FOUND) - triggering cleanup
>> > [2014/03/05 09:27:39.054679, 0]
>> > ../source3/smbd/smbXsrv_session.c:1336(smbXsrv_session_logoff)
>> > smbXsrv_session_logoff(0xae36cf4a): failed to delete global key
>> > 'AE36CF4A': NT_STATUS_NOT_FOUND
>> > [2014/03/05 09:27:39.054801, 0] ../lib/util/fault.c:72(fault_report)
>> > ===============================================================
>> > [2014/03/05 09:27:39.054900, 0] ../lib/util/fault.c:73(fault_report)
>> > INTERNAL ERROR: Signal 11 in pid 6477 (4.1.5-SerNet-Debian-7.wheezy)
>> > Please read the Trouble-Shooting section of the Samba HOWTO
>> > [2014/03/05 09:27:39.055068, 0] ../lib/util/fault.c:75(fault_report)
>> > ===============================================================
>> > [2014/03/05 09:27:39.055166, 0] ../source3/lib/util.c:785(smb_panic_s3)
>> > PANIC (pid 6477): internal error
>> > [2014/03/05 09:27:39.056113, 0]
>> ../source3/lib/util.c:896(log_stack_trace)
>> > BACKTRACE: 29 stack frames:
>> > #0
>> /usr/lib/i386-linux-gnu/samba/libsmbconf.so.0(log_stack_trace+0x29)
>> > [0xb71bc4f4]
>> > #1 /usr/lib/i386-linux-gnu/samba/libsmbconf.so.0(smb_panic_s3+0x76)
>> > [0xb71bc61b]
>> > #2 /usr/lib/i386-linux-gnu/samba/libsamba-util.so.0(smb_panic+0x3a)
>> > [0xb77016c0]
>> > #3
>> >
>> /usr/lib/i386-linux-gnu/samba/libsamba-util.so.0(base64_decode_data_blob_talloc+0)
>> > [0xb7701a50]
>> > #4 [0xb7746400]
>> > #5 /usr/lib/i386-linux-gnu/samba/libsmbd_base.so(close_file+0x40)
>> > [0xb74cb2fe]
>> > #6
>> /usr/lib/i386-linux-gnu/samba/libsmbd_base.so(file_close_user+0x55)
>> > [0xb7468248]
>> > #7
>> >
>> /usr/lib/i386-linux-gnu/samba/libsmbd_base.so(smbXsrv_session_logoff+0x3fa)
>> > [0xb751c6d0]
>> > #8 /usr/lib/i386-linux-gnu/samba/libsmbd_base.so(+0x14d853)
>> [0xb751c853]
>> > #9 /usr/lib/i386-linux-gnu/samba/libdbwrap.so(+0x5483) [0xb6aa1483]
>> > #10 /usr/lib/i386-linux-gnu/samba/libdbwrap.so(+0x55c0) [0xb6aa15c0]
>> > #11 /usr/lib/i386-linux-gnu/samba/libdbwrap.so(dbwrap_traverse+0x2d)
>> > [0xb6a9f375]
>> > #12
>> >
>> /usr/lib/i386-linux-gnu/samba/libsmbd_base.so(smbXsrv_session_logoff_all+0xbf)
>> > [0xb751c9fa]
>> > #13 /usr/lib/i386-linux-gnu/samba/libsmbd_base.so(+0x153fe5)
>> > [0xb7522fe5]
>> > #14 /usr/lib/i386-linux-gnu/samba/libsmbd_base.so(+0x154494)
>> > [0xb7523494]
>> > #15
>> > /usr/lib/i386-linux-gnu/samba/libsmbd_shim.so(exit_server_cleanly+0x22)
>> > [0xb71119c9]
>> > #16 /usr/lib/i386-linux-gnu/samba/libsmbd_base.so(+0x1132c7)
>> > [0xb74e22c7]
>> > #17
>> >
>> /usr/lib/i386-linux-gnu/samba/libtevent.so.0(tevent_common_check_signal+0x18b)
>> > [0xb73c86b9]
>> > #18
>> /usr/lib/i386-linux-gnu/samba/libsmbconf.so.0(run_events_poll+0x24)
>> > [0xb71ddfed]
>> > #19 /usr/lib/i386-linux-gnu/samba/libsmbconf.so.0(+0x40349)
>> [0xb71de349]
>> > #20
>> > /usr/lib/i386-linux-gnu/samba/libtevent.so.0(_tevent_loop_once+0xb1)
>> > [0xb73c52f5]
>> > #21
>> /usr/lib/i386-linux-gnu/samba/libsmbd_base.so(smbd_process+0x1182)
>> > [0xb74e97e6]
>> > #22 /usr/sbin/smbd(+0x8111) [0xb776d111]
>> > #23
>> > /usr/lib/i386-linux-gnu/samba/libsmbconf.so.0(run_events_poll+0x2ce)
>> > [0xb71de297]
>> > #24 /usr/lib/i386-linux-gnu/samba/libsmbconf.so.0(+0x4043b)
>> [0xb71de43b]
>> > #25
>> > /usr/lib/i386-linux-gnu/samba/libtevent.so.0(_tevent_loop_once+0xb1)
>> > [0xb73c52f5]
>> > #26 /usr/sbin/smbd(main+0x1cf9) [0xb776f5ae]
>> > #27 /lib/i386-linux-gnu/i686/cmov/libc.so.6(__libc_start_main+0xe6)
>> > [0xb6c47e46]
>> > #28 /usr/sbin/smbd(+0x4751) [0xb7769751]
>> > [2014/03/05 09:27:39.058493, 0]
>> ../source3/lib/dumpcore.c:317(dump_core)
>> > dumping core in /var/log/samba/cores/smbd
>> > [2014/03/05 09:39:16.276046, 1]
>> > ../source3/smbd/service.c:1122(close_cnum)
>> > 10.10.20.149 (ipv4:10.10.20.149:57653) closed connection to service
>> > sysvol
>> > [2014/03/05 09:41:36.306911, 1]
>> ../source3/smbd/service.c:1122(close_cnum)
>> > 10.10.20.109 (ipv4:10.10.20.109:49178) closed connection to service
>> > AnotherShare
>> > [2014/03/05 09:41:36.308606, 1]
>> > ../source3/smbd/service.c:1122(close_cnum)
>> > 10.10.20.109 (ipv4:10.10.20.109:49178) closed connection to service
>> C203
>> > [2014/03/05 09:41:36.313183, 1]
>> > ../source3/smbd/service.c:1122(close_cnum)
>> > 10.10.20.109 (ipv4:10.10.20.109:49178) closed connection to service
>> > sysvol
>> > [2014/03/05 09:41:36.314940, 1]
>> > ../source3/smbd/service.c:1122(close_cnum)
>> > 10.10.20.109 (ipv4:10.10.20.109:49178) closed connection to service
>> > SomeShare
>> > [2014/03/05 09:41:36.316339, 1]
>> ../source3/smbd/service.c:1122(close_cnum)
>> > 10.10.20.109 (ipv4:10.10.20.109:49178) closed connection to service
>> > Profiles
>> > [2014/03/05 09:41:36.317337, 1]
>> > ../source3/smbd/service.c:1122(close_cnum)
>> > 10.10.20.109 (ipv4:10.10.20.109:49178) closed connection to service
>> > netlogon
>> > [2014/03/05 09:41:36.318201, 1]
>> > ../source3/smbd/service.c:1122(close_cnum)
>> > 10.10.20.109 (ipv4:10.10.20.109:49178) closed connection to service
>> home
>> > [2014/03/05 09:41:36.320192, 1]
>> ../source3/smbd/service.c:1122(close_cnum)
>> > 10.10.20.109 (ipv4:10.10.20.109:49178) closed connection to service
>> > GemeinsameDateien
>> > [2014/03/05 09:46:05.055771, 1]
>> > ../source3/smbd/service.c:1122(close_cnum)
>> > 10.10.20.25 (ipv4:10.10.20.25:61596) closed connection to service
>> Fotos
>> > [2014/03/05 09:46:05.056703, 1]
>> > ../source3/smbd/service.c:1122(close_cnum)
>> > 10.10.20.133 (ipv4:10.10.20.133:52612) closed connection to service
>> > GemeinsameDateien
>> > [2014/03/05 09:46:05.060982, 1]
>> > ../source3/smbd/service.c:1122(close_cnum)
>> > 10.10.20.109 (ipv4:10.10.20.109:49178) closed connection to service
>> > Fotos
>> > [2014/03/05 09:46:07, 0] ../source3/smbd/server.c:1198(main)
>> > smbd version 4.1.5-SerNet-Debian-7.wheezy started.
>> > Copyright Andrew Tridgell and the Samba Team 1992-2013
>> >
>> > At that time I did a restart of the server (if I'm not mistaken I was
>> > trying the max_protocol directive at that time...). There are also
>> files in
>> > the core directory which appear to be binary though...
>> >
>> > Thanks!
>> >
>> >
>> >
>> >
>> > 2014-03-05 16:14 GMT+01:00 Simon Schneider <schneida.simon at gmail.com>:
>> >
>> > Thanks for your reply.
>> >>
>> >> Here is my smb.conf:
>> >>
>> >> [global]
>> >> workgroup = ABC-ABCDEF
>> >> realm = ABC-ABCDEF.LAN
>> >> netbios name = ABCSERVER
>> >> server role = active directory domain controller
>> >> dns forwarder = 10.10.20.20
>> >> idmap_ldb:use rfc2307 = yes
>> >> load printers = yes
>> >> log level = 0
>> >>
>> >> [netlogon]
>> >> path = /var/lib/samba/sysvol/asb-alkoven.lan/scripts
>> >> read only = No
>> >>
>> >> [sysvol]
>> >> path = /var/lib/samba/sysvol
>> >> read only = No
>> >>
>> >> [printers]
>> >> path = /var/spool/samba
>> >> printable = yes
>> >> printing = CUPS
>> >>
>> >> [print$]
>> >> path = /srv/samba/PrinterDrivers
>> >> comment = Printer Drivers
>> >> writeable = yes
>> >>
>> >> [Profiles]
>> >> path = /srv/samba/Profiles
>> >> read only = no
>> >>
>> >> [home]
>> >> path = /srv/samba/home
>> >> read only = no
>> >>
>> >> [GemeinsameDateien]
>> >> path = /srv/samba/GemeinsameDateien
>> >> read only = no
>> >>
>> >> [... 3 more shares following exactly the same pattern as
>> >> "GemeinsameDateien"..]
>> >>
>> >>
>> >> I'm running samba version 4.1.5-SerNet-Debian-7.wheezy on debian i686.
>> >> The machine has 4GB RAM and an Intel Core 2 Duo, so performance of the
>> >> server itself should not matter (there are at max 5-8 users accessing
>> files
>> >> but mostly docs, some pictures).
>> >>
>> >> The problem happens on our existing windows 7 clients as well as one
>> that
>> >> a did a fresh install on, installed alle MS updates and is not yet
>> joined
>> >> to the domain, so my applied GPOs should not change anything either.
>> Also
>> >> clients access the server via IP, so no DNS problem either.
>> >>
>> >> Thanks again for your input!
>> >>
>> >>
>> >>
>> >>
>> >> 2014-03-05 15:53 GMT+01:00 Marty Sweet <msweet.dev at gmail.com>:
>> >>
>> >> Hi,
>> >>>
>> >>> Could you post your smb.conf? Our production Samba 4 servers work a
>> >>> treat but our older Samba 3 servers had this issue occasionally.
>> >>> Is there also any error messages in your logging directory?
>> >>>
>> >>> Thanks,
>> >>> Marty Sweet
>> >>>
>> >>> On 5 March 2014 09:26, Simon Schneider <schneida.simon at gmail.com>
>> wrote:
>> >>> > I'm experiencing extremely slow performance when trying to copy
>> files
>> >>> from
>> >>> > and to a samba 4 share. I'm using Debian and the Samba 4 SerNet
>> >>> packages
>> >>> > and everything is up to date on the client as well as on the server.
>> >>> The
>> >>> > connection is made through 100Mbp/s ethernet, but the problem also
>> >>> exists
>> >>> > on a local virtual machine that runs on the Debian server.
>> >>> >
>> >>> > By extremely I mean really abysmal:
>> >>> >
>> >>> > * Copying a folder with 50 files total size 10 MB to Win7: ~ 20
>> >>> minutes at
>> >>> > 3-4 Kb/s
>> >>> > * Copying the same folder to Windows Server 2003: ~ 3 seconds
>> >>> > * Copying the same folder with ROBOCOPY to Win 7: ~3 seconds
>> >>> > * Copying a large random file 500 MB to Win 7: Takes ages to start
>> copy
>> >>> > progress than up to 10 MB/s
>> >>> > * Copying the same large file to Windows Server 2003: Starts
>> >>> immediately to
>> >>> > copy and takes a few seconds
>> >>> > * Copying the same large file with ROBOCOPY using Win7: also decent
>> >>> > performance, no delays
>> >>> >
>> >>> > I already googled for days and found a lot of suggestions to:
>> >>> >
>> >>> > * Changes switches: one of the test machines runs as VM on host, so
>> >>> this is
>> >>> > not the issue
>> >>> > * Update network drivers: same thing, using different machines and a
>> >>> VM the
>> >>> > problem exists on all of them
>> >>> > * Turn off Remote Differential compression on the client: Didn't
>> help
>> >>> at all
>> >>> > * Disable autotuning on the client with netsh: Didn't help at all
>> >>> > * Make sure not to use mapped drives but UNC paths instead: Did help
>> >>> when
>> >>> > logging in but has no effect on file transfer
>> >>> > * Try switching max protocol on the samba server to something like
>> >>> NT1: did
>> >>> > not help
>> >>> > * Do not use any other custom smb.conf options like socket etc.
>> >>> >
>> >>> > What is the big difference between using Windows File Explorer and
>> >>> > Robocopy? I mean, I cant force my users to copy files with robocopy
>> >>> from
>> >>> > now on.... grml...
>> >>> >
>> >>> > Thanks for help!
>> >>> > --
>> >>> > To unsubscribe from this list go to the following URL and read the
>> >>> > instructions: https://lists.samba.org/mailman/options/samba
>> >>>
>> >>
>> >>
>> >
>> --
>> To unsubscribe from this list go to the following URL and read the
>> instructions: https://lists.samba.org/mailman/options/samba
>>
>
>
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