Every 5 minutes I see "sdd:" in dmesg

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ftarz
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Every 5 minutes I see "sdd:" in dmesg

Postby ftarz » 2017/09/25 02:47:58

Every 5 minutes I see "sdd:" in the output from dmesg.

Just "sdd:"

Nothing after the colon and nothing else about the disk at /dev/sdd.

Just "sdd:"

Anyone have an idea why it keeps showing-up in the output from dmesg?

Frank

desertcat
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Re: Every 5 minutes I see "sdd:" in dmesg

Postby desertcat » 2017/09/25 05:02:21

Well... it could be referencing you Solid Disk Drive. It could be something that causes to sdd to referenced. I'd check to see what comes before or after that part in your dmesg.

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avij
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Re: Every 5 minutes I see "sdd:" in dmesg

Postby avij » 2017/09/25 08:38:14

Check if there's something that gets executed every five minutes. crontab -u root -l and see also /etc/crontab and files in /etc/cron.d

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TrevorH
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Re: Every 5 minutes I see "sdd:" in dmesg

Postby TrevorH » 2017/09/25 13:06:37

Or you have a flakey USB connection and a disk that's on it has no partitions. If it had partitions the message would list them:

[ 3.445833] sdd: sdd1
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ftarz
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Re: Every 5 minutes I see "sdd:" in dmesg

Postby ftarz » 2017/09/26 01:43:50

Well the hard disk in question is a SAS drive with no partitions. And root has no crontab.

I still see this:

[Sep25 19:13] sdd:
[Sep25 19:18] sdd:
[Sep25 19:24] sdd:
[Sep25 19:29] sdd:
[Sep25 19:34] sdd:
[Sep25 19:39] sdd:
[Sep25 19:44] sdd:
[Sep25 19:49] sdd:
[Sep25 19:54] sdd:
[Sep25 19:59] sdd:
[Sep25 20:04] sdd:
[Sep25 20:09] sdd:
[Sep25 20:15] sdd:
[Sep25 20:20] sdd:
[Sep25 20:25] sdd:
[Sep25 20:30] sdd:
[Sep25 20:35] sdd:
[Sep25 20:40] sdd:
[Sep25 20:45] sdd:
[Sep25 20:50] sdd:
[Sep25 20:55] sdd:
[Sep25 21:01] sdd:
[Sep25 21:06] sdd:
[Sep25 21:11] sdd:
[Sep25 21:16] sdd:
[Sep25 21:21] sdd:
[Sep25 21:26] sdd:
[Sep25 21:31] sdd:
[Sep25 21:36] sdd:
[Sep25 21:42] sdd:

What happens every 5 minuntes that I see sdd: in the dmesg output?

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avij
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Re: Every 5 minutes I see "sdd:" in dmesg

Postby avij » 2017/09/26 07:07:19

If this was triggered exactly every 5 minutes it'd most probably be something in crontab, but looks like the period is slightly longer than 5 minutes.

See ps -ef | grep sleep and see if there's a sleep process sleeping for 5m or 300 or thereabouts. You can see the process id and the parent process id in the output, and you can use those to find the program/script that might be causing this. Obviously this method might not work in all situations.