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Copying from one cache pool to another share with a different cache pool - bypassing cache

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Kind of confusing, but I'm having an issue where I try to copy a file from a share A that is set to only use cache pool A, to share B that uses cache pool B, but mover moves files to the array.

Cache A is RAID5 NVME SSDs and Cache B is RAID1 NVME SSDs. When I use Windows (so, SMB) to copy from share A to share B, the copy writes directly to the array disks, which are HDDs, thus making the copy process MUCH slower.

Is this expected behavior? I originally was using Share A via unassigned devices and I wrote to the cache of share B but wanted to be able to control it natively.

Edited by joshbgosh10592
Corrected second sentence to say Cache A/B instead of Share A/B.

  • Community Expert

Go to Tools - Diagnostics and attach the complete Diagnostics ZIP file to your NEXT post in this thread.

  • Community Expert

Currently the mover doesn't move data from pool to pool, only pool to array or array to pool.

  • Author
19 hours ago, trurl said:

Go to Tools - Diagnostics and attach the complete Diagnostics ZIP file to your NEXT post in this thread.

Thank you! Here it is. So this isn't expected behavior then?

 

16 hours ago, JorgeB said:

Currently the mover doesn't move data from pool to pool, only pool to array or array to pool.

I know, this is me manually moving files from one share (cache only) to another share (cache enabled, using a different cache pool than original.) Thank you though

nas-diagnostics-20210819-1917.zip

  • Community Expert

Do these files already exist on the array? If you are overwriting files that already exist on the array then it will overwrite the files directly on the array without caching so there will only be one version of the file in the share.

  • Author
24 minutes ago, trurl said:

Do these files already exist on the array? If you are overwriting files that already exist on the array then it will overwrite the files directly on the array without caching so there will only be one version of the file in the share.

Nope, they're new files to Share B.

  • Community Expert

Can you give the actual name of the shares and pools just to help make better sense of what you are doing and how it relates to the settings in your Diagnostics?

  • Author

I'd rather be slightly generic publicly on the share names (unless my explanation below doesn't make sense and it's just too confusing).

Share A is named "T------s" in the configs (short term), and Share B is "M----s" (long term).

When I'm done working the files in the short term share (Share A), I copy them to the long term (Share B). This is to prevent the spinning disks in Share B from constantly being awake (and bogged down by the work being performed.

  • Community Expert

It doesn't look like your M----s share specifies which pool to use.

  • Author
Just now, trurl said:

It doesn't look like your M----s share specifies which pool to use.

So, it's set to use the original cache pool from pre-6.9, however I renamed it once I created the other pools. Could the rename of the cache pool have screwed it up, even though the GUI says it's correct?

 

Screen Shot 2021-08-19 at 11.25.06 PM.png

  • Community Expert

Try changing it then change it back and apply to see if that fixes it. You might take a look at your other shares that use that pool also since it looks like several of your shares don't have a pool specified in .cfg

  • Author

Yup, that's exactly what happened. Inside the share settings, it shows what I want, but in the share overview, it shows the old share name (You can see where the new share (Share A) I created shows "Array_cache". I toggle it to another cache pool and back, and now I'm writing to the cache correctly (well, for some reason it's moving the files in and back out through the VM instead of just moving it within the NAS. Previously, I was able to move at around 200MB/s while putting no strain on the VM NIC (something like NFS Offload). I'm assuming that's just how I have the shares mapped in the VM?)
Thank you!!
514859928_ScreenShot2021-08-19at11_30_01PM.thumb.png.92634a9ed40af7e42972f1560053e653.png

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