June 20, 201610 yr Hello- My cache is running 4x SSD's as you can see below, running 4x SSDs of 250gb or larger size, shouldn't my cache size be 500gb? I think there's something wrong with Cache 4 as that one never gets written to, and I can't pre-clear it when the array is off and it's unassigned, pre-clear says it's busy. Also if I start the array with Cache 4 unassigned my cache is not mountable - how can I get this sorted out?
June 20, 201610 yr Community Expert Click on cache and post the info that appears on "btrfs filesystem show".
June 20, 201610 yr Author Click on cache and post the info that appears on "btrfs filesystem show". Label: none uuid: 2476542d-d476-42da-b09b-b7ee87fe3db7 Total devices 3 FS bytes used 80.35GiB devid 1 size 238.47GiB used 178.06GiB path /dev/sdd1 devid 3 size 232.89GiB used 178.06GiB path /dev/sde1 devid 4 size 238.47GiB used 0.00B path /dev/sdj1
June 20, 201610 yr Community Expert Yep, cache 4 is not being used, this should fix it: -backup your cache just in case -unassign all cache disks -change cache slots to 1 -click cache and set filesystem to reiserfs -assign cache4 only (sdk) to cache slot -star array and format cache -stop array -change cache slots back to 4 -assign the first 3 cache disks only and start array, check if it mounts, if still doesn't mount you'll have to preclear cache 4 -if it mounts, stop array, add cache 4, start array, wait for balance to finish, you can check progress on cache page -if ok "btrfs filsystem show" has to display "Total devices 4"
June 21, 201610 yr Author Thank you so much! Things got a little dicey there for a bit but I think I've got everything sorted out now.
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