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RND4000 volume scan/RAID sync every day
Hi,
I have the ReadyNAS NV+ RND4000, up to date with the latest firmware. It's been running flawlessly for about ten years albeit with only light use. It powers down overnight and there are many days when I don't acually access it at all.
Just recently it's started performing a volume scan and RAID sync most days, of its own accord. I haven't changed anything myself. The log (short sample below) tells me that volume scan 'found and corrected errors', even though I may not have accessed any data since the last time. Yesterday I forced a volume scan and it found no errors, only for the device to do its own volume scan later on and find errors.
Looking at the SMART information for the disks, there doesn't seem to be anything anomalous (although I'm no expert) and no great difference between the stats for the three drives I have installed.
Any ideas what's going on, please?
Thanks,
Jeff
Fri Oct 5 07:13:06 GMT 2018 System is up. Thu Oct 4 23:55:17 GMT 2018 System power-on scheduled for 10/05/2018 07:10 Thu Oct 4 23:53:58 GMT 2018 RAID sync finished on volume C. The volume is now fully redundant. Thu Oct 4 19:40:40 GMT 2018 System is up. Thu Oct 4 19:36:48 GMT 2018 RAID sync started on volume C. Thu Oct 4 19:36:27 GMT 2018 Volume scan found and corrected errors. Thu Oct 4 10:44:25 GMT 2018 System is up. Thu Oct 4 10:41:37 GMT 2018 Volume scan found no errors. Thu Oct 4 08:52:57 GMT 2018 Rebooting device... Thu Oct 4 08:52:57 GMT 2018 Please close this browser session and use RAIDar to reconnect to the device. System rebooting... Thu Oct 4 07:12:59 GMT 2018 System is up. Wed Oct 3 23:05:47 GMT 2018 System power-on scheduled for 10/04/2018 07:10 Wed Oct 3 18:46:12 GMT 2018 RAID sync finished on volume C. The volume is now fully redundant. Wed Oct 3 18:44:11 GMT 2018 Disk on channel 2 reports a temperature of 55C / 131F. Wed Oct 3 18:35:08 GMT 2018 Disk on channel 2 reports a temperature of 55C / 131F. Wed Oct 3 18:26:08 GMT 2018 Disk on channel 2 reports a temperature of 55C / 131F. Wed Oct 3 14:32:59 GMT 2018 System is up. Wed Oct 3 14:28:59 GMT 2018 RAID sync started on volume C. Wed Oct 3 14:28:40 GMT 2018 Volume scan found and corrected errors. Wed Oct 3 07:12:53 GMT 2018 System is up. Wed Oct 3 01:40:24 GMT 2018 System power-on scheduled for 10/03/2018 07:10 Wed Oct 3 01:38:29 GMT 2018 RAID sync finished on volume C. The volume is now fully redundant. Tue Oct 2 21:25:29 GMT 2018 System is up. Tue Oct 2 21:21:20 GMT 2018 RAID sync started on volume C. Tue Oct 2 21:21:00 GMT 2018 Volume scan found and corrected errors. Tue Oct 2 07:12:45 GMT 2018 System is up. Mon Oct 1 23:05:44 GMT 2018 System power-on scheduled for 10/02/2018 07:10 Mon Oct 1 07:12:56 GMT 2018 System is up.
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Have you looked in the log zip file for more details on the volume scans?
Thanks, I'd overlooked that option. This is what I'm getting repeated in fs_check.log:
***** File system check performed at Thu Oct 4 17:41:50 GMT 2018 ***** fsck 1.40.11 (17-June-2008) e2fsck 1.40.11 (17-June-2008) c was not cleanly unmounted, check forced. Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information c: 134393/178307072 files (5.6% non-contiguous), 319068372/356589568 blocks
I note the "c was not cleanly unmounted, check forced." line! I'm slightly reassured that it's not something worse data-wise, but given that I'm not aware of any external reasons why there could be spontaneous outages, e.g., power cuts, it leads me to think that the ReadyNAS is fully rebooting itself. In other words, the volume scan is a symptom not the problem in itself.
If I then look in the system.log I can see this (filtered):
Oct 4 07:11:43 nas-01-B6-06 kernel: Boot type/reason: rtc/0/0 Oct 4 10:43:25 nas-01-B6-06 kernel: Boot type/reason: normal/2/0 Oct 4 19:39:41 nas-01-B6-06 kernel: Boot type/reason: normal/0/0
The first of these events was when it woke up in the morning, the second was when I forced a reboot and the third was spontaneous. Thus we can see there is something non-routine going on, but I'm not sure where to go from here. Frontview always shows reasonable operating temperatures and I haven't had issues with any of my other equipment on the same circuit having crashes etc..
Thanks for any advice offered!
Jeff
I guess there could be something going on with the power, but I'm thinking it's more likely to be a failing PSU or maybe a system board component.
Given the age of the NAS, replacing it might be the best option. You could replace the PSU with some effort, but of course we don't really know if that's the cause or not.
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