Normaly total and used should deviate us a few gb. depend on your write workload you should run
btrfs balance start -dusage=60 /mnt every week to avoid "ENOSPC" if you use newer btrfs-progs who supper balance limit filters you should run btrfs balance start -dusage=99 -dlimit=10 /mnt every 3 hours. This will balance 2 Blocks (dlimit=10; corresponds to 10 gb) with are not filled full into new blocks. You could/should adjust the intervall and the limit-filter depend on your write workload. For example if you write (change files + new files) only 10GB a day it will be enough to run this ever night. The last option completly avoid the ENOSPC issue but produce aditional workload for your harddrives. Note: you should avoid making snapshots during balance. Use a simple lock-mechanic for that. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
