system partially frozen


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Hi

found the server partially frozen in the morning.  

GUI unresponsive.

2 VMs running, unresponsive. showed screensaver running though.

was able to access via ssh.

didnt allow stop of samba, or unmount - disk busy

didnt allow shutdown

 

for the future, maybe someone can provide some commands for forcing the unmount of disks, shutting down forcefully, stopping array forcefully. 

because nothing Graceful worked.

the only way for me was to HARD RESET the server. 

 

please find attached the logs I could take before reset. and diagnostics after.

 

hope someone can tell me where to "dig" ?

syslog-2017-04-09.txt

smart-sdf-2017-04-09.txt

smart-sde-2017-04-09.txt

smart-sdd-2017-04-09.txt

smart-sdc-2017-04-09.txt

smart-sdb-2017-04-09.txt

smart-sda-2017-04-09.txt

tower-diagnostics-20170409-0952.zip

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I don't know how to fix the error, but looking through your system logs, there were spammed by USB errors like this and others "Tower kernel: usb 5-1: device not accepting address 100, error". Looks like on more than one device. I'm sure one our experts will chime in and get you on the right path for correction. 

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