On Fri, Apr 14, 2017 at 10:46 AM, Chris Murphy <li...@colorremedies.com> wrote:
> > The passive repair works when it's a few bad sectors on the drive. But > when it's piles of missing data, this is the wrong mode. It needs a > limited scrub or balance to fix things. Right now you have to manually > do a full scrub or balance after you've mounted for even one second > using degraded,rw. That's why you want to avoid it at all costs. Small clarification on "right now you have to manually do" I don't mean YOU personally, with your array. I mean, anyone who happens to have done even the tiniest amount of writes to a Btrfs volume while mounted in rw,degraded. Once a new device is added and the bad/missing device deleted, you still have to manually do a scrub or balance of the entire array. That's the only way to fix up the array back to normal. It's not automatic. The way to avoid this is to *immediately* before any new writes, do a device add and device delete missing*. That prevents any degraded chunks from being written. * ON non-raid56 volumes, you can use 'btrfs replace'. -- 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
