On 2012-10-25 22:11, cwillu wrote: >>> 3. How does Data: total=72GB before rebalance, but is 5GB after >>> rebalance? This was a brand new file system, file system >>> installed, with maybe 2-3 updates, and a dozen or two reboots. >>> That's it. No VM's created on that volume (it's a VDI itself), >>> and the VDI file itself never grew beyond 9GB. > Combine the previous two answers: You had 72GB allocated to block > groups which are mostly empty. After the balance, the contents of > those groups have been shuffled around such that most of them could > be freed.
Did btrfs rebalance when it needs spaces ? The example reported by Chris suggested that due to the filesystem history, btrfs allocate some chunk that became empty. If the user/admin don't make a (re)balance, is btrfs capable to move some chunk from the DATA pool to the METADATA pool when the space became low autonomously ? I don't think, but I want a confirmation. BR G.Baroncelli -- gpg @keyserver.linux.it: Goffredo Baroncelli (kreijackATinwind.it> Key fingerprint BBF5 1610 0B64 DAC6 5F7D 17B2 0EDA 9B37 8B82 E0B5 -- 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
