Allow docker to use cache pool?


jonfive

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Hey all, 

 

I'm a little lost - I recently added a second ssd to my cache, this created a cache pool. When I download a large file (happens around the 65gb area on a single download), docker still runs out of space despite the additional cache drive with more than 150gb free. To fix it, I have to run the mover manually and continue the download; sometimes breaking the download completely.
Current usage: 162gb used, 198gb free.

 

I've read all over, but i'm not sure if it's definitely what i need to do. They say to remove the docker and reinstall, but does that mean that I need to reinstall ALL of the dockers to correct the issue? Figured i would ask before i have to go through and re-configure all of them.

 

thanks!

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With 2 disks, the default setting for the cache pool will result in a mirror, with total storage equal to the smallest of the 2 drives. Sounds like you were expecting to get more capacity simply by adding a disk. See here:

 

https://lime-technology.com/forums/topic/46802-faq-for-unraid-v6/#comment-480421

 

and here:

 

https://lime-technology.com/forums/topic/46802-faq-for-unraid-v6/#comment-480420

 

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1 hour ago, jonathanm said:

What size drives are in your cache pool?

120 and 240

1 hour ago, trurl said:

With 2 disks, the default setting for the cache pool will result in a mirror, with total storage equal to the smallest of the 2 drives. Sounds like you were expecting to get more capacity simply by adding a disk. See here:

  

https://lime-technology.com/forums/topic/46802-faq-for-unraid-v6/#comment-480421

 

and here:

 

https://lime-technology.com/forums/topic/46802-faq-for-unraid-v6/#comment-480420

 

As far as i can tell, the two drives i have are striped

f2de7503accd2e832cb40555944cdd0e.png
 

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1 hour ago, trurl said:

With 2 disks, the default setting for the cache pool will result in a mirror, with total storage equal to the smallest of the 2 drives. Sounds like you were expecting to get more capacity simply by adding a disk. See here:

 

https://lime-technology.com/forums/topic/46802-faq-for-unraid-v6/#comment-480421

 

and here:

 

https://lime-technology.com/forums/topic/46802-faq-for-unraid-v6/#comment-480420

 

unless this is what is happening: 
RAID0: requires 2 device, best performance, no redundancy, if used with different size devices only 2 x capacity of smallest device will be available, even if reported space is larger.

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2 hours ago, jonfive said:

As far as i can tell, the two drives i have are striped

That screenshot doesn't tell us anything about these questions. what raid mode you have.

 

From Main - Cache Devices, click on the first cache device (Cache) to get to the Cache Settings, then post a screenshot of the Balance Status.

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1 hour ago, jonfive said:

unless this is what is happening: 
RAID0: requires 2 device, best performance, no redundancy, if used with different size devices only 2 x capacity of smallest device will be available, even if reported space is larger.

yes, if using raid0 you only have 240GB

 

As mentioned in that first link, you can use "single" to get all of the combined capacity.

 

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