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?
/Al
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? > > /Al >At first glance it looks like something is trying to write to a share, but what is unclear from the info provided. Can you post your smb.conf, without any commented lines and do not try to attach it to the post, all attachments are stripped by the mailing list. Rowland
On Wed, Nov 07, 2018 at 08:54:11AM +0000, Rowland Penny via samba wrote:> 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? > > > > /Al > > > > At first glance it looks like something is trying to write to a share, > but what is unclear from the info provided. > > Can you post your smb.conf, without any commented lines and do not try > to attach it to the post, all attachments are stripped by the mailing > list. > > Rowland > > --My smb.cnf: [global] workgroup = WORKGROUP server string = Samba Server hosts allow = 192.168.1. 127. printcap name = /dev/null load printers = yes printing = bsd log file = /var/log/samba/%m.log max log size = 1000 security = user username level = 6 encrypt passwords = yes smb passwd file = /etc/samba/smbpasswd unix password sync = yes passwd program = /usr/bin/passwd %u passwd chat = *New*UNIX*password* %n\n *ReType*new*UNIX*password* %n\n *passwd:*all*authentication*tokens*updated*successfully* username map = /etc/samba/smbusers include = /etc/samba/smb.conf.%m interfaces = 127.0.0.1/8 192.168.1.0/24 local master = no os level = 33 domain master = no preferred master = no dns proxy = no [lib] path = /mnt/lib valid users = al write list = al read only = no available = yes browseable = yes writable = no guest ok = no printable = no locking = no strict locking = no directory mask = 0766 There are four more shares with similar settings. When all client machines are disconnected from Samba server, the Samba's idle io activity remains the same: disk write every 60 seconds. If this were a simptom of some failure, shouldn't there have remained some trace in the logs? I checked /var/log/samba directory, but there are no error reports in the last few days. 'smbd --version' returns '4.2.14 - Debian'. /Al
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 providedno, samba all day long writes to /var/lib/samba ------------------------------------------ [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 ------------------------------------------ [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