And you might as well just attach a full dmesg to the bug report too. Who knows there might be something buried in there that's useful. The cleanest approach is to reboot and then reproduce all of this with fstrim on each volume, then capture the dmesg to a file. Then do the strace fstrim for each volume. But a bunch of kernel message clutter may be better than no messages at all.
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