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Forum Discussion
ReadyNAS312 Resyncing at every start-up
Hi All.... So this week is turning in to a bit of a ReadyNAS saga. The problem right now is that I have two new 4Gb hard drives in a ReadyNAS312, with the unit factory reset to get them to format...
Hiya,
There are no errors showing on either of the drives.
I'd have said the system had only ever been shut down properly since the factory reset, but I had it in my head that that involved pressing and holding the power button until the NAS shut down. Checking the manual again, it says that proper shutdown from the front panel is to double press the power button, so maybe press-and-hold does trigger an improper shutdown?
So I guess we'll wait six hours then have another go.
However:
- any thoughts on this 'Error Reporter: An error has occurred' message that now appears every time I browse to the admin page?
- should the unit have had to spend six hours syncing the drives immediately after a factory reset (when one would have assumed it would just have formatted both drives and marked them as synced)?
Thanks,
Rob.
Rob_Halliday wrote:
- any thoughts on this 'Error Reporter: An error has occurred' message that now appears every time I browse to the admin page?
Now that we've gotten past the resync...
I don't know what's provoking this. You might try PMing mdgm (using the messages link in the upper right), and ask if he'd be willing to analyze your logs.
Did you install any app?
Can you try clearing the cache of your browser?
Yes, 4Tb not Gb.
No apps installed.
Clearing the cache in the browser (Safari on a Mac): error persists. However, using Google Chrome doesn't give the error. This error is new since upgrading to ReadyNAS OS 6.6.1, so maybe it's a feature of that ReadyNAS OS release?
Am confused about long-press vs double-press to power down. I've always used long-press back to the days of the ReadyNAS Duo, without seeing this constant re-syncing. Has this functionality of the power key changed somewhere along the way?
I understand the difference between formatting and sync. My question is, though, if you factory reset the ReadyNAS, which effectively wipes the data from both drives, should it not understand that the same operation has happened to both drives without having to first sync them? Doesn't matter in the context of this, but am just curious.
Thanks,
Rob.
Rob_Halliday wrote:
My question is, though, if you factory reset the ReadyNAS, which effectively wipes the data from both drives, should it not understand that the same operation has happened to both drives without having to first sync them?
The RAID array has to be built before it is used, and that requires every sector to be synced. In the case of RAID-1 (used in this case), it means that every sector on disk 1 needs to be the same as the corresponding sector on disk 2. With more complicated RAID modes, it means that all the parity blocks need to be computed and written. The NAS certainly "understands" that the volume is initially empty. But it still needs to create initialize the array.
I suspect you are thinking there should be a better way - and you are not alone in that thought. The BTRFS folks have been working to merge RAID into the file system itself for some years. When they are finished, the process will be more efficient. But the last time I looked at their progress, they still had a ways to go - there are quite a few RAID modes that are useful, and of course it's important that RAID recovery be battle-tested before it's deployed at scale.
Rob_Halliday wrote:
Am confused about long-press vs double-press to power down. I've always used long-press back to the days of the ReadyNAS Duo, without seeing this constant re-syncing. Has this functionality of the power key changed somewhere along the way?
Yes, this changed when the ultra/pro models were introduced. Per the hardware manuals:
Duo v1: To shut down the system gracefully, press and hold the Power button until the Power button LED flashes (about 5 seconds).
Ultra 2: Press the Power button twice initiate a graceful shutdown.
All subsequent ReadyNAS follwed the Ultra-2 approach.
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