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Synchronize unclean mirrors before adding them to a running gmirror.

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During gmirror startup, if component mirrors are found to be dirty as is
typical after a system crash, the mirrors are synchronized to the mirror
with highest priority. However if a gmirror starts without all of its
mirrors present, for example because of some transient delays during
tasting, the remaining mirrors must be synchronized before they may become
active.

MFC after:	2 weeks
Sponsored by:	Dell EMC Isilon
This commit is contained in:
Mark Johnston 2017-05-02 23:29:42 +00:00
parent e351474725
commit db7c508323
1 changed files with 3 additions and 1 deletions

4
sys/geom/mirror/g_mirror.c

@ -2225,7 +2225,9 @@ g_mirror_determine_state(struct g_mirror_disk *disk)
sc = disk->d_softc; sc = disk->d_softc;
if (sc->sc_syncid == disk->d_sync.ds_syncid) { if (sc->sc_syncid == disk->d_sync.ds_syncid) {
if ((disk->d_flags & if ((disk->d_flags &
G_MIRROR_DISK_FLAG_SYNCHRONIZING) == 0) { G_MIRROR_DISK_FLAG_SYNCHRONIZING) == 0 &&
(g_mirror_ndisks(sc, G_MIRROR_DISK_STATE_ACTIVE) == 0 ||
(disk->d_flags & G_MIRROR_DISK_FLAG_DIRTY) == 0)) {
/* Disk does not need synchronization. */ /* Disk does not need synchronization. */
state = G_MIRROR_DISK_STATE_ACTIVE; state = G_MIRROR_DISK_STATE_ACTIVE;
} else { } else {