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Can't copy large file to pool over the network (not a space issue)


jp7

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Hey all,

I have an unusual problem that I can't figure out, and am wondering if I am just overlooking something in settings or if there's something else going on.

My pool is on a Win 10 PC and has 7.76 TB free. Each individual disk in the pool has at least 1 TB free. What's been happening is that if I try to copy over a single file that is larger than 10-12 GB to the pool over the network, it fails with the message "insufficient system resources exist." Usually that means disk space or RAM, but I have enough space on all my disks and RAM is fine according to system monitors on both source and destination machines.

  • I can copy a bunch of smaller files that total up to that size into the pool over the network.
  • I can copy a single 12GB file to the pool from a local USB on the Win 10 PC.
  • I can copy a single 12GB file directly into the poolpart folder on a single drive in the pool over the network (e.g. not going to the pool drive letter). [This makes me think it's the pool at issue, not the network.]
  • It's only when copying a single large file to the pool over the network that it fails.

It's been doing this for about a month and I have no idea why. Even with file duplication, there should be plenty of space. All I can think of is that there's some setting on the balancers/file placement that's causing it. I've looked there and nothing jumped out at me, but I'm also not sure what I'd be looking for.

I've attached an image of my drives in Explorer and the DrivePool main dashboard window.

It's difficult to use the pool for backup destinations and such with this issue. Does anyone have any ideas about what might be going on and how I could fix it?

Thanks!

image.thumb.png.f1a42ae1faa57347c2a2189b290c9df5.png

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8 answers to this question

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51 minutes ago, Umfriend said:

The only thing I can think of is Manage Pool -> Performance -> Network I/O Boost (even though it says it relates to read requests, not write requests).

Good idea - I tried that (both with it on and off) and still the same error. It fails more quickly with I/O boost on, which makes sense, I guess!

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Another thing I have is that if I copy files from a client to the Server of the network, it matters whether I access the Server through Explorer -> Network or through a mapped network drive. The latter sometimes fails but I am pretty sure it has to do with some sort of permission (SQL Server backup files I can not copy through the mapped network drive) and I get a different message anyway. So, completely OT.

So basically, I have no clue. I hope someone else here as an idea on how to diagnose and/or fix. I would have a look at Event Viewer on both the client as the server. Not optimistic but I'd look.

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If it is not already present, try adding PoolUsageMaximum (REG_DWORD, Decimal, 60) to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Memory Management in the registry.

If it is already present but higher than 60, record its value and try changing it to 60.

In both cases a restart will be required.

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18 hours ago, Shane said:

If it is not already present, try adding PoolUsageMaximum (REG_DWORD, Decimal, 60) to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Memory Management in the registry.

If it is already present but higher than 60, record its value and try changing it to 60.

In both cases a restart will be required.

Thanks - I tried this setting at 60 and at 40 (which I read sometimes works elsewhere on the internet) and neither made a difference, unfortunately. Still the same error.

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20 minutes ago, Shane said:

Perhaps you could work around the problem with a third-party copier (e.g. UltraCopier, FastCopy or Copy Handler) or file manager (e.g. Double Commander), as some use their own copying code (to varying degrees) rather than rely on Windows?

I tried TeraCopy, and it failed silently, which was disappointing. Let me try one of your suggestions and see how that works.

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