Copy files/folders via dashboard OS6.10.3 / RN214

Question

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.

Firstly, my old NV+v2 used OS5 and I mostly managed files/folders via SSH mv when I needed to move large data sets. Obviously, the moves were pretty instant, even on this older platform. Because OS6 works a bit differently, translate that to "I don't know the quirks with OS6 :smileyhappy:", I decided to use the web I/F instead - drag+drop.

Moving files takes an absolute age, 39GB took ~20 minutes, that's effectively 2GB/min or 33MB/sec. Wow, that seems extremely slow for an on drive move. However, I was moving from a share to a user home area, and unlike OS5 that uses ext4 (I think), OS6 is using BTRFS, and user home areas an created differently (again, I think).

Nothing else was active on the RN214, and it has OS6.10.3 installed.

Via ssh I could not see a copy/move process, but I did see this "fsbroker.cgi" process during moves:

20928 ?        Dsl    0:08 /frontview/lib/fsbroker.cgi

This is clearly not an efficient way to move files. Thoughts?

Sandshark · Answer

If you don't use snapshots, then there is no downside to using a straight mv command.&nbsp;Actually, what you are experiencing isn't from BTRFS per se, it's the fact that Netgear chose to make shares sub-volumes instead of just directories.&nbsp; But, no, OS6 has no provisions for an internal volume to be EXT or for a share to be a simple folder.&nbsp; More complex file structures like BTRFS and ZFS are very common in Linux today when used for storage appliances and are becoming moreso for just standard use.&nbsp; With drives getting&nbsp;bigger and bigger, the extra protection they provide is very important.&nbsp; So OS5 isn't so much "more Linux like" compared to OS6, it's "old Linux".&nbsp; Once you figure it out, it really doesn't get in the way, even at the SSH command prompt level.&nbsp; And the day may come when you really do&nbsp;end up using the extra it&nbsp;provides.

StephenB · Answer

I haven't timed copying files in the web ui, and usually just use drag/drop.
&nbsp;
Do you have snapshots enabled on the source share?&nbsp; If you did, then a move would result in the original files ending up in a snapshot on the source, and with a copy placed in the destination.&nbsp; Free space would be reduced as a result.
&nbsp;
In general, moves using drag-and-drop are instant when you are reorganizing a share, but moves turn into copy-delete when you are moving files between shares.&nbsp;
&nbsp;
The absolute fastest way to move files quickly is to use cp --reflink from ssh, and then delete the originals.&nbsp; The --reflink bit tells btrfs not to copy the datablocks, but instead to clone the metadata.
&nbsp;
&nbsp;

aks-2 · Answer

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!

StephenB · Answer

aks-2&nbsp;wrote:
&nbsp;
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.&nbsp; 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.&nbsp;&nbsp;

aks-2 · Answer

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.&nbsp;Moves within the same share are practically instant (1-2 seconds), as you mention.&nbsp;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.&nbsp;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?&nbsp;

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Copy files/folders via dashboard OS6.10.3 / RN214

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