On Mon, Jul 24, 2017 at 2:42 PM, Hugo Mills <hugo@xxxxxxxxxxxxx> wrote: > > In my experience, it's pretty consistent at about a minute per 1 > GiB for data on rotational drives on RAID-1. For metadata, it can go > up to several hours (or more) per 256 MiB chunk, depending on what > kind of metadata it is. With extents shared between lots of files, it > slows down. In my case, with a few hundred snapshots of the same > thing, my system was taking 4h per chunk for the chunks full of the > extent tree. Egads. Maybe Cloud Admin ought to consider using a filter to just balance the data chunks across the three devices, and just leave the metadata on the original two disks? Maybe sudo btrfs balance start -dusage=100 <mp> -- Chris Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
