mmmeee15
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When transfering files over SMB from 1 unraid machine to another on the same network, speeds are different when using MC (achieves full gigabit) and using Windows copy in a VM on one of the unraid servers (around 20MB/s). It does not matter if I copy from/to array, cache, or unassigned disk, speed is always the same, MC gives gigabit, VM gives 20MB/s.
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A bit of a long story, but hopefully its just an easy fix that I'm missing. I have 2 unraid servers, lets call them A and B. A is mostly for VMs while B is mostly for storage. I have a VM (windows) on A that I use to move things around, and as such it has quite a few shares mapped using the traditional windows way (map drive, \\192.168.1.A\share, or 192.168.1.B\share). Things map just fine, and no real issues disconnecting or anything. The issue is that the speed when moving/copying files using the VM is not what it should be, it hovers around 60MB/s (direction does not matter, A to B or B to A problem still persists). It is not an issue regarding the array/cache arrangement, as you will see below. I have tried numerous things to test, and I think the clearest example is between 2 Unassigned SSDs, that for the purposes of this test were not being used for anything else at the moment. To be extra clear, I even put in a different NIC in each server to make sure that it wasn't anything bottlenecking the transfers. Using MC to transfer directly between the SSDs, the transfer maxes out the gigabit, as it should be. Using the VM to transfer the same file between the disks, its the same 60MB/s. When using a different computer to transfer, there is no issue. All of the transfers go full gigabit, regardless of cache, array etc. To make things stranger still, a VM on server B, copying the same file to the same disks, has no issue, works just fine. A different VM on server A has the same issue, hovers around 60MB/s. And heres the best part, if I copy the VM from server B to Server A, copy the settings so theyre all the same, test again, the issue still is there. So it must be something to do with server A? I did recently change server A from a custom server to and HP gen9. I don't recall this being an issue before then, but I could just not have been paying attention. Any ideas would be very helpful.
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Will do. I'm getting a new cable shortly, and will post if needed. Thank you
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Could you provide more information on the Mellanox NIC bug fix? I have 2 connectx-2 cards flashed to ethernet mode (with the unraid plugin). The cards were correctly detected and showing up in the plugin, but the link appeared down even though it was properly connected. Could this be related, or is my qsfp cable bad? Also there were a few strange issues with the network config of other NICs when the mellanox card was plugged in. It wasn't a critical issue at the time, so I dropped the matter, but if it is fixed now, it would be great to have 10gbit.
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Hello, I have been dealing with the following issue for quite a long time, since end of 2018 (when I started using unraid) at least. What happens is that on any VM (although more frequently on Windows VMs), when using the web noVNC, at seemingly random, I will not be able to use my mouse any more. The cursor will move over the window, but not 'in' the VM itself. The keyboard will continue to work just fine, no problems whatsoever. The problem itself is not a web browser one, as restarting the browser or trying a different one does not do anything to fix the problem. Also, the problem occurs on different machines as well, both intel and amd based. The problem also only affects 1 VM at a time, ie if there are multiple VMs running, if one develops the problem, the other does not. The only solution I have found is to stop and start the VM itself, which is rather disruptive. I wish I could provide more information about how the problem occurs, but it is rather random, sometimes a few times a week, other times months between. If there is anything I can provide, please let me know. Thank you