Any idea how to recover? I can't cut-paste but it's Total devices 1 FS bytes used 176.22GiB size 233.59GiB used 233.59GiB Basically it's been data allocation happy, since I haven't deleted 53GB at any point. Unfortunately, none of the chunks are at 0% usage so a balance -dusage=0 finds nothing to drop. Attempting a balance with -dusage=25 instantly dies with ENOSPC, since 100% of space is allocated. Is this recoverable, or do I need to copy to another disk and back? This is a really unfortunate failure mode for BTRFS. Usually I catch it before I get exactly 100% used and can use a balance to get it back into shape. What causes it to keep allocating datablocks when it's got so much free space? The workload is pretty standard (for devs, at least): git and kernel builds, and git and android builds. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html