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Forum Discussion
Ultra4 (6.2.4) disconnects from network
Hi,
Ultra4 was running 6.2.2 with minimal services enabled (SMB+UI), 4x Hitachi 5K3000 2TB in RAID-5; updated to 6.2.4 a couple of days ago, uploaded with 2+TB files,
1. Today was uploading a large file, a few seconds later Ultra4 disconnects from network, power button turns on LCD which display IP address
2. Re-plug network cable, was able to ssh in, top command screenshot as below, system was 0% idle, what was OS running at that time? UI was very slow.
3. Shortly after Ultra4 disconnects from network again, re-plug network cable doesn't get network back, can't reach by hostname or IP. Power button doesn't do anything, LCD has no display.
What was OS running?
What could have caused this?
What to do next?
Thanks. 8)
Ultra4 was running 6.2.2 with minimal services enabled (SMB+UI), 4x Hitachi 5K3000 2TB in RAID-5; updated to 6.2.4 a couple of days ago, uploaded with 2+TB files,
1. Today was uploading a large file, a few seconds later Ultra4 disconnects from network, power button turns on LCD which display IP address
2. Re-plug network cable, was able to ssh in, top command screenshot as below, system was 0% idle, what was OS running at that time? UI was very slow.
3. Shortly after Ultra4 disconnects from network again, re-plug network cable doesn't get network back, can't reach by hostname or IP. Power button doesn't do anything, LCD has no display.
What was OS running?
What could have caused this?
What to do next?
Thanks. 8)
15 Replies
Replies have been turned off for this discussion
StephenB wrote: Try RAIDar - it might give you some more info.
Already tried version 4.3.8 and 6.0, didn't find result, just says Testing Disks- The disk tests may take quite a while.
- Came back from outside, NAS already in normal running mode, I guess it was still testing disks.
I'm confused whether it was rebooted itself:
journalctl:Jun 04 07:17:38 nas-ultra4 kernel: Initializing cgroup subsys cpu
dmesg -T:[Thu Jun 4 00:45:25 2015] Initializing cgroup subsys cpu
uptime:08:23:00 up 7:37, 2 users, load average: 1.03, 1.09, 1.11
who -r:run-level 5 2015-06-04 07:17
It appears it's a run level change.
Is there a log to check for disk test results? - e.g.
# smartctl --all /dev/sda
The extended test result will be in a section at the bottom of the output. mdgm wrote: e.g.
# smartctl --all /dev/sda
The extended test result will be in a section at the bottom of the output.
Thanks.
All 4 disk passed Extended offline SMART Self-test:Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 440 -
# 1 Extended offline Completed without error 00% 433 -
# 1 Extended offline Completed without error 00% 490 -
# 1 Extended offline Completed without error 00% 422 -
Reallocated_Sector_Ct and Reallocated_Event_Count has RAW_VALUE of 0.
It seems both memory and disks are good, that hanging could be just one off event?
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