On Thu, 11 Jun 2015 16:48:47 +1000 Neil Brown <neilb@xxxxxxx> wrote: > Would you be able to test with the following patch? There is a chance it might > confirm whether two sync threads are running at the same time. I tried the patch, and was fortunate: [ 208.626468] Register thread ffff88003cf53d00 md0_resync [ 208.629801] Started thread ffff88003cf53d00 md0_resync [ 208.629801] Finished thread ffff88003cf53d00 [ 208.639800] Reap thread ffff88003cf53d00 [ 208.639800] Finished thread ffff88003cf53d00 md0_resync [ 208.643133] Register thread ffff88003cf53700 md0_resync [ 208.643133] Reap thread (null) [ 208.646466] Started thread ffff88003cf53700 md0_resync [ 208.659799] Reap thread ffff88003cf53700 -HANG- That "(null)" is a problem - that will clear MD_RECOVERY_RUNNING, but there is a thread there. Will keep looking. NeilBrown -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
