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Readynas 104 drops out when copying to it
I have a readynas 104 configured with four 4tb drives in raid 5. I've managed to copy about 6tb onto the device without issue but now whenever I go to copy something onto the box, lets say a single 4gb file, it starts out ok and will copy around 1gb of the file at 31MB/second but then the connection drops out completely and I get an error message saying:
There is a problem accessing Z:\....
Make sure you are connected to the network and try again.
Now I've obviously mapped drive Z: to the box and when I say it drops out, I can still ping it's IP address. I have tried both NIC's with different cables and in different ports on the router with exactly the same result every time. I am running two other buffalo NAS boxes off the same router and they are working fine.
I can view the files etc over readycloud and check it's performance without problem and in reasonable time, but then as soon as I copy a file over in explorer, readycloud all but freezes and wont let you navigate through the various screens. And once I try to copy a file across I can still view files and directories on the box in explorer, albeit it takes about 30 seconds or so to load each directory which is ridiculous, but before attempting to copy each directory will load almost instantly as you would expect.
Any ideas?
There is a problem accessing Z:\....
Make sure you are connected to the network and try again.
Now I've obviously mapped drive Z: to the box and when I say it drops out, I can still ping it's IP address. I have tried both NIC's with different cables and in different ports on the router with exactly the same result every time. I am running two other buffalo NAS boxes off the same router and they are working fine.
I can view the files etc over readycloud and check it's performance without problem and in reasonable time, but then as soon as I copy a file over in explorer, readycloud all but freezes and wont let you navigate through the various screens. And once I try to copy a file across I can still view files and directories on the box in explorer, albeit it takes about 30 seconds or so to load each directory which is ridiculous, but before attempting to copy each directory will load almost instantly as you would expect.
Any ideas?
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- Hi alexk2013,
"When it reached the 70% utilization and started sending alerts"
70% warning alert is by design,
berfs will run snapshot automatically ( Please check share setting, default enable continue protect), if disk used about 70%, maybe snapshot occupy other 30% (You don't see from UI), this time if you copy file to NAS, NAS also delete snapshot automatically, but if space doesn't free up in time, you can not copy file to NAS.
this is my ieda, I sent davexyz's logs to RD to confirm. - I have the same drop outs with a RN312. As the file IO goes up the device gives up.
Yes I've called support, canned answers, Reboot, there's nothing in the logs, seems fine now, go away
And the ReadyNAS Remote is garbage - Thanks for the advises.
There is not any snapshot.
There are 3.5TB free.
Seems that when it reached the 7.5-8TB the problem started.
No copy possible because of not enough space.
Copy starts at about 31mb/s, then drops to some mg/s then to few bytes/s and then it hangs.
The data that are copied during the write speed drop are corrupted.
Even read is a problem. It hangs as well.
To my opinion the problem is the poor handling of 4x4TB disks. - Sent logs as requested
alexk2013 wrote: Copy starts at about 31mb/s, then drops to some mg/s then to few bytes/s and then it hangs.
The data that are copied during the write speed drop are corrupted.
Even read is a problem. It hangs as well.
To my opinion the problem is the poor handling of 4x4TB disks.
I believe it's the filesystem daemons. I'm having this exact issue on an Ultra 6 with 6x2TB disks. The problem are the btrfs-transaction processes, who lock up the i/o for a few milliseconds.- So... 36 hours to rebuild the array and 4 and 1/2 days into copying files onto the readynas 104 and no prizes for guessing what has now happened. These boxes are a piece of crap!
I must admit I got further than last time, the admin page shows (when it can load of course) that I now have 7.49 TB of data on there with 3.41TB free... and I can no longer copy files onto it, same error message as before "There is a problem accessing..."
I periodically went to the admin page to check on its progress, various pages loaded fairly promptly with no problems, but now, click on anything and you get the spinning disc for minutes on end. Someone has really screwed the pooch with this product cause it just doesn't work. And the guy from support who promised to call me back in three hours... 5 days ago, thanks for your help! Such a waste of my time... DO NOT BUY THIS PRODUCT... I'll be spreading the word as far and wide as I can! - Downgrading from 4x4TB to 4x2TB disks.
Let's see if it will be able to handle lots of data.
Will revert with results. MueR wrote: alexk2013 wrote: Copy starts at about 31mb/s, then drops to some mg/s then to few bytes/s and then it hangs.
The data that are copied during the write speed drop are corrupted.
Even read is a problem. It hangs as well.
To my opinion the problem is the poor handling of 4x4TB disks.
I believe it's the filesystem daemons. I'm having this exact issue on an Ultra 6 with 6x2TB disks. The problem are the btrfs-transaction processes, who lock up the i/o for a few milliseconds.
Might be, the result is that it cannot handle too much of data.alexk2013 wrote: Might be, the result is that it cannot handle too much of data.
I know. My device keeps locking up because the IO wait states reach 100% on every core.- This is a known problem (only to 3rd level support apparently) and has to do with an error in the configuration of the file system and how it handles the snapshots. The Readynas thinks that it is 100% full when it obviously isn't! ...that was his explanation.
A guy from 3rd level support (and an R&D guy who wrote the file system) in China is currently remote accessing my computer and the Readynas and playing with the file system trying to find a solution. I've wasted days of my time on this so hopefully they find a solution fairly quickly, I guess a firmware update will follow... or a refund!
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