August 30, 20205 yr I tried running 2XNVME 1TB Drives as a dual cache pool but suffered terrible performance (yes, tried beta and reformatted to new partition size) I would like to go back to a single cache drive to regain the performance but googling/faq does not cover this process only how to remove drives from a pool. I am currently left with 1 drive in the cache pool and still suffering poor performance.
August 30, 20205 yr Community Expert What you have is already a single drive btrfs cache pool. You could reformat it as XFS but might not improve performance. How are you measuring that anyway?
August 30, 20205 yr Author 15 minutes ago, trurl said: What you have is already a single drive btrfs cache pool. You could reformat it as XFS but might not improve performance. How are you measuring that anyway? Before I had a single cache drive and could copy from my Windows Desktop machine at 1000mb/s over my fibre connection, I wanted redundancy so created a cache pool to get only 230mb/s @johnnie.black suggested trying the beta which I installed, freshly formatted both NVME drives (which each are capable and tested at 3000mb/s and sustained a 1000mb/s speed when used as a single cache or unassigned device from my Windows Desktop) and still only get 230mb/s so to regain my speed I wanted to revert back to a single cache drive.
August 30, 20205 yr Community Expert 16 minutes ago, mbc0 said: I wanted to revert back to a single cache drive You have a single cache drive as shown in the Balance Status section in that screenshot. 18 minutes ago, mbc0 said: suggested trying the beta Seem to remember seeing some thread like that, do you have a link?
August 30, 20205 yr Author 2 hours ago, trurl said: Seem to remember seeing some thread like that, do you have a link? Hi, yes it is here
August 30, 20205 yr Author 2 hours ago, trurl said: You have a single cache drive as shown in the Balance Status section in that screenshot. I do but it is showing as a pool still instead of a cache drive (2nd screenshot is from my other server)
August 30, 20205 yr Community Expert 17 minutes ago, mbc0 said: (2nd screenshot is from my other server) What is the filesystem of cache on that other server?
August 30, 20205 yr Community Expert Also, have you tried reducing the number of disks allowed in the pool to only one? (stop the array to see what I mean)
August 30, 20205 yr Author 2 minutes ago, trurl said: What is the filesystem of cache on that other server? BTRFS 1 minute ago, trurl said: Also, have you tried reducing the number of disks allowed in the pool to only one? (stop the array to see what I mean) Yes, I have reduced the slots to 1
August 31, 20205 yr Community Expert If you were trying to demonstrate how many slots you allow for cache that screenshot doesn't do it.
August 31, 20205 yr Community Expert Showing "Pool" for single device cache is normal with the new beta.
August 31, 20205 yr Author 22 minutes ago, johnnie.black said: Showing "Pool" for single device cache is normal with the new beta. Thanks for that!
August 31, 20205 yr Author 9 hours ago, trurl said: If you were trying to demonstrate how many slots you allow for cache that screenshot doesn't do it. now not necassary as per Johnnie's last post, it appears that is normal for the new beta.
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