Dmesg Error
I am seeing this in dmesg on Dell Poweredge 860
INFO: task tail:17872 blocked for more than 120 seconds.
“echo 0 > /proc/sys/kernel/hung_task_timeout_secs” disables this message. tail D ffff81021ac87040 0 17872 31199
(NOTLB)
ffff810124fc7bd8 0000000000000082 ffff81021c8ad200 ffff8101714f4d80
0000000000000000 0000000000000007 ffff81016471b820 ffff81021ac87040
0000e805f8d72d5b 0000000000002d53 ffff81016471ba08 0000000388055b77
Call Trace:
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What should be done?
jerry
2 thoughts on - Dmesg Error
It’s a generic “something might be wrong” alert issued since (in this case) a tail process blocked (on I/O) for more than 120s. It can be I/O
overload, flaky remote filesystems, badly behaving drivers, too slow
(I/O) hardware…
/Peter
In my recent experience (~ 5 years) with a big fleet of servers (800
right now), this always indicates a hardware problem with the cpu/mobo/something-like-that.
Then again, I haven’t used a remote filesystem in the past 5 years!
:-)
— greg