May be better to use /sys/fs/btrfs/<uuid>/devices to find the device to monitor, and then monitor them with blktrace - maybe there's some courser granularity available there, I'm not sure. The thing is, as far as Btrfs alone is concerned, a drive can be "bad" and you're effectively degraded, while the drive is not missing. Unless it's physical removed or somehow dead, it'll still be seen but can produce all kinds of mayhem. 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
