On Fri, Jun 28, 2013 at 02:59:45PM +0100, Martin wrote: > On kernel 3.8.13: > > Using two equal performance SATAII HDDs, formatted for btrfs raid1 for > both data and metadata and: > > The second disk appears to suffer about x8 the read activity of the > first disk. This causes the second disk to quickly get maxed out whilst > the first disk remains almost idle. > > Total writes to the two disks is equal. > > This is noticeable for example when running "emerge --sync" or running > compiles on Gentoo. > > > Is this a known feature/problem or worth looking/checking further?
So we balance based on pids, so if you have one process that's doing a lot of work it will tend to be stuck on one disk, which is why you are seeing that kind of imbalance. Thanks, Josef -- 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
