23c25bd8b1
r341674 inadvertently introduced a bug where newer mirror components being tasted would clear the high sc_flags that are not controlled by component metadata, such as G_MIRROR_DEVICE_FLAG_TASTING. This could plausibly expose a small window of time during STARTING where device destruction might race with mirror component addition, probably resulting in a crash. Reviewed by: markj X-MFC-With: r341674 Differential Revision: https://reviews.freebsd.org/D18521