On Wed, Mar 19, 2014 at 10:53:33AM -0600, Chris Murphy wrote: > > Yes, although it's limited, you apparently only lose new data that was added > > after you went into degraded mode and only if you add another drive where > > you write more data. > > In real life this shouldn't be too common, even if it is indeed a bug. > > It's entirely plausible a drive power/data cable becomes lose, runs for hours > degraded before the wayward device is reseated. It'll be common enough. It's > definitely not OK for all of that data in the interim to vanish just because > the volume has resumed from degraded to normal. Two states of data, normal vs > degraded, is scary. It sounds like totally silent data loss. So yeah if it's > reproducible it's worthy of a separate bug.
Actually what I did is more complex, I first added a drive to a degraded array, and then re-added the drive that had been removed. I don't know if re-adding the same drive that was removed would cause the bug I saw. For now, my array is back to actually trying to store the backup I had meant for it, and the drives seems stable now that I fixed the power issue. Does someone else want to try? :) Marc -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems .... .... what McDonalds is to gourmet cooking Home page: http://marc.merlins.org/ -- 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