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Forum Discussion
Copy files/folders via dashboard OS6.10.3 / RN214
After transferring files from a NV+v2 to a RN214 in a bulk 'backup' transfer, I then wanted to move the files and folders to specic areas on the RN214. I did this via the dashboard>shares. Firstl...
No snapshots, just plain shares, of course from a share to a home share breaks the boundary you mention.
But, 2GB/min seems extremely slow, it's even slower than a LAN copy! I'll do some more testing, so far this is not impressing me over the freedom and flexibility of OS5!
aks-2 wrote:
But, 2GB/min seems extremely slow, it's even slower than a LAN copy! I'll do some more testing, so far this is not impressing me over the freedom and flexibility of OS5!
It does seem very slow. I just did a copy/paste of an 8.7 GB file on my own RN202 using the web browser interface, and the paste took just a few seconds.
After more testing via the web I/F, I am seeing extremely slow moves across share boundaries, in an ssh window running 'top' I see fsbroker.cgi consuming 50-60% cpu. I've no idea what this is doing, well I think we do know, read-write-delete, but why is not clear.
Moves within the same share are practically instant (1-2 seconds), as you mention.
From an ssh window, I moved ~30GB across a share boundary using the mv command, it was virtually instant. I checked that the data was really moved, and as far as I could tell it was. The directories/files looked correct, du reported the right result.
Have I created any problems with file system integrity by moving data this way in a terminal session, or will the file system just figure it out?
In OS4.x and 5.x, shares are simply directories at the Linux level. In OS6, they are BTRFS sub-volumes. While this does give you a lot more control over each share (snapshots, COW, strict sync, etc.), one piece of baggage that comes with it is that standard file moves are, as StephenB said, a copy-and-delete function, not just moving a pointer to the data from one directory to another. Netgear could implement the use of the --reflink option for share to share copies, but the logic to make sure it's only used for that would likely not be trivial.
So, one thing to think about is Do you really need different shares?, or are different directories sufficient? If you don't need different permissions, protocols, or other things I mentioned earlier, then you probably don't need them to be separate shares.
You can, of course, continue to use the mv --reflink command from SSH as long as you are copying to an existing share. All will be fine using it, but don't create a new folder under /data (or whatever you named your volume) and expect it to show up as a share, because it won't. And don't delete one, either. You can create or remove directories within a share without any issues.
So, one thing to think about is Do you really need different shares?Yes, this is how I manage access and media content sharing, piling everything in to one directory would be limiting.
What I don't need is all the BTRFS baggage, I don't need snapshots and teh like, but I suppose OS6 will not use ext4 or similar?
The mv I performed in the ssh terminal, was a plain mv (without --reflink), and that was super fast even across shares. Perhaps there is already an extension to the underlying mv command to add --reflink by default, I don't know.
In reality, moving stuff around is just whilst I am setting things up, getting familiar with the new platform - yes I have come to OS6 several years after many of you, but I in fact prefer the simpler (more Linux like) OS5 - I can understand that much more easily :smileyembarrassed:!
Thanks for the tips to you Sandshark and StephenB for the pointers whilst I 'discover' OS6/BTRFS for the first time.
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