On May 22, 2014, at 3:43 AM, Duncan <1i5t5.duncan@xxxxxxx> wrote: > > Note that unlike md/raid1, btrfs raid1 won't mount writable with only a > single device. You must have at least two devices to mount writable, tho > a formerly two-device raid1 with a device missing should mount read-only. No, a single device from a two device Btrfs raid1 is normally mountable degraded,rw. I did this just a week ago when bug "kernel BUG at fs/btrfs/locking.c when mounting with previously missing device". At one point when reproducing it, I was running degraded,rw with a single device for several hours without problems. Try -o recovery,degraded I would drop the other options for now, since they aren't necessary to recover from a device failure. 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
