On Mon, Apr 25, 2016 at 3:01 AM, <fdmanana@xxxxxxxxxx> wrote: > The following patches fix 2 hard to hit races in relocation that make its > first phase (MOVE_DATA_EXTENTS) miss extents, triggers a warning in the > second phase (UPDATE_DATA_PTRS) and leaves metadata in an invalid state > (file extent items pointing to areas corresponding to the deleted block > group), leading to a BUG_ON() when attempting to read those extents after > the relocation finishes. Never saw this particular race/error, but decided to give these patches a workout to see whether they cause any new or unrelated problems. Continuous rebalancing (full, partial) for ~30m while unpacking and deleting kernel trees on a 16GB tmpfs-backed loopback device did not cause any problem; balance just cruises along at (sometimes) up to ~1GB/s and does its thing. Finally btrfs check also found nothing wrong. Not sure if this qualifies as testing, but anyway: Tested-by: Holger Hoffstaette <holger.hoffstaette@xxxxxxxxxxxxxx> cheers, Holger -- 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
