On Wed, Nov 17, 2010 at 15:31, Hugo Mills <hugo-l...@carfax.org.uk> wrote: > On Tue, Nov 16, 2010 at 10:19:45PM -0500, Chris Ball wrote: >> == Changing RAID levels == >> >> We need ioctls to change between different raid levels. Some of these >> are quite easy -- e.g. for RAID0 to RAID1, we just halve the available >> bytes on the fs, then queue a rebalance. > > I would be interested in the rebalancing ioctls, and in RAID level > management. I'm still very much trying to learn the basics, though, so > I may go very slowly at first... > > Hugo.
Can I suggest we combine this new RAID level management with a modernisation of the terminology for storage redundancy, as has been discussed previously in the "Raid1 with 3 drives" thread of March this year? I.e. abandon the burdened raid* terminology in favour of something that makes more sense for a filesystem. Mostly this would involve a discussion about what terms would make most sense, though some changes in the behaviour of btrfs redundancy modes may be warranted if they make things more intuitive. I could help you make these changes in your patches, or write my own patches against yours, though I'm also completely new to kernel development. Best regards, Bart -- 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
