June 5, 20233 yr Hello everyone, I have been using unraid for about 5 months now and I decided to upgrade from a single SSD to 3 m.2 drives to my unraid. AGAMMIXS70B-2T-CS1 - 2 TB (nvme0n1) 2INTEL_SSDPEKNU010TZ - 1 TB (nvme1n1) 2INTEL_SSDPEKNU010TB - 1 TB (nvme2n1) After I moved everything from my cache to the array which it was about 100Gb from a 1TB SSD. I added those m.2 drives without any issues. I assigned the drives to the new cache pool and to my surprice is that out of the 3 drives which total 4TBs - I see that only 1TB is Free with 3.82MB used right away and It says 50% utilization already - mind you I have not even move anything from the arrays to the cache pool. Double check on the cache folder and nothing is there. Filesystem Size Used Avail Use% Mounted on /dev/nvme0n1p1 1.9T 3.7M 955G 1% /mnt/cache My questions are - Did i do something wrong while setting up that cache pool? What can I do to fix this? Thank you
June 5, 20233 yr Solution Free space will be wrong with an odd number of devices and raid1, it's a btrfs issue, used space will be correct and free space will get closer to real as the pool gets filled up.
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