[Samba] Avoiding constant HDD access

[Reindl Harald]

Am 07.11.18 um 09:54 schrieb Rowland Penny via samba:
> On Wed, 7 Nov 2018 05:45:45 +0300
> Albert Berger via samba <samba at lists.samba.org> wrote:
> 
>> I'm running a Samba server on Raspbian and observing that Samba
>> during idle periods is constantly (every minute) writing to HDD
>> (maybe doing some journaling?) what causes the HDD to constantly spin
>> and never standby:
>>
>> root at rpi:~# pidstat -dl 20
>> Linux 4.4.50-v7+ (localhost) 	11/07/2018
>> _armv7l_	(4 CPU) 
>> 04:10:08 AM   UID  PID   kB_rd/s   kB_wr/s kB_ccwr/s iodelay  Command
>> 04:10:28 AM     0  832      0.00      0.20      0.20
>> 0  /usr/sbin/smbd -D 
>> 04:11:08 AM   UID  PID   kB_rd/s   kB_wr/s kB_ccwr/s iodelay  Command
>> 04:11:28 AM     0  832      0.00      0.20      0.20
>> 0  /usr/sbin/smbd -D 
>> 04:12:08 AM   UID  PID   kB_rd/s   kB_wr/s kB_ccwr/s iodelay  Command
>> 04:12:28 AM     0  832      0.00      0.20      0.20
>> 0  /usr/sbin/smbd -D
>>
>> Is there some way (via configuration setting or maybe recompiling
>> with some parameter) to turn off this constant disk io?
>>
> At first glance it looks like something is trying to write to a share,
> but what is unclear from the info provided

no, samba all day long writes to /var/lib/samba

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[root at nfs:~]$ backup-nfs.sh
sending incremental file list
sending incremental file list
sending incremental file list
sending incremental file list
samba/lock/smbXsrv_session_global.tdb
         40,960 100%    7.81MB/s    0:00:00 (xfr#1, to-chk=30/79)
samba/lock/smbXsrv_tcon_global.tdb
         24,576 100%   23.44MB/s    0:00:00 (xfr#2, to-chk=29/79)
samba/lock/msg.lock/
samba/lock/msg.lock/1041903
             20 100%   19.53kB/s    0:00:00 (xfr#3, to-chk=25/79)
samba/private/msg.sock/
samba/private/msg.sock/1041903
sending incremental file list
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[root at nfs:~]$ backup-nfs.sh
sending incremental file list
sending incremental file list
sending incremental file list
sending incremental file list
samba/lock/printer_list.tdb
         20,480 100%    0.00kB/s    0:00:00 (xfr#1, to-chk=34/79)
samba/lock/serverid.tdb
         16,384 100%   15.62MB/s    0:00:00 (xfr#2, to-chk=33/79)
sending incremental file list