On Thu, Apr 21, 2016 at 6:53 AM, Martin Svec <martin.s...@zoner.cz> wrote: > Hello, > > we use btrfs subvolumes for rsync-based backups. During backups btrfs often > fails with "No space > left" error and goes to readonly mode (dmesg output is below) while there's > still plenty of > unallocated space:
Are you snapshotting near the time of enospc? If so it's a known problem that's been around for a while. There are some suggestions in the archives but I think the main thing is to back off on the workload momentarily, take the snapshot, and then resume the workload. I don't think it has to come to a complete stop but it's a lot more reproducible with heavy writes. -- Chris Murphy -- 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
