dmesg logs is 'filled with' the following :

[613051.997981]  sdf: sdf1
[613052.068773]  sdf: sdf1
[613352.060804]  sdc: sdc1
[613653.176468]  sdc: sdc1

This just continues on and on about every 300 seconds(only sdc and sdf is shown).

Any reasons why this might be happening? It makes reading dmesg outputs annoying.

System specs: 1 SSD(sde), 5 HDDs, 500W PSU, Linux 4.10.0-40-generic #44~16.04.1-Ubuntu SMP Thu Nov 9 15:37:44

  • This line appears when the kernel detects partitions on "new" harddisks. So this line should appear exactly once after the harddisk becomes known to the kernel. First thing I'd do is to use udevadm to listen to kernel events, and see if some other suspicious events show up. – dirkt Dec 8 '17 at 11:17
  • 2
    This looks like a monitoring software waking up, as 300 seconds = 5 minutes = default delay of monitoring for many things. Do you have things like nagios hitting this server? – Patrick Mevzek Dec 8 '17 at 14:30
  • @PatrickMevzek No, I didn't install monitoring software (except webmin, if that counts as it) – 김승재 Dec 9 '17 at 10:49
  • @dirkt udevadm output : pastebin.com/QSpnB8Sc dmesg output(of the same time) : [718131.072717] sdf: sdf1 – 김승재 Dec 9 '17 at 11:06
  • sudo udevadm monitor --udev --property, don't run a program, and do nothing for 10 mins and wait if you see something. tee or redirect to file as required. – dirkt Dec 9 '17 at 11:07

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