/*
* Called to shut down an array.
*/
int
rf_Shutdown(RF_Raid_t *raidPtr)
{
if (!raidPtr->valid) {
RF_ERRORMSG("Attempt to shut down unconfigured RAIDframe driver. Aborting shutdown\n");
return (EINVAL);
}
/*
* wait for outstanding IOs to land
* As described in rf_raid.h, we use the rad_freelist lock
* to protect the per-array info about outstanding descs
* since we need to do freelist locking anyway, and this
* cuts down on the amount of serialization we've got going
* on.
*/
RF_LOCK_MUTEX(rf_rad_lock);
if (raidPtr->waitShutdown) {
RF_UNLOCK_MUTEX(rf_rad_lock);
return (EBUSY);
}
raidPtr->waitShutdown = 1;
while (raidPtr->nAccOutstanding) {
RF_WAIT_COND(raidPtr->outstandingCond, rf_rad_lock);
}
RF_UNLOCK_MUTEX(rf_rad_lock);
/* Wait for any parity re-writes to stop... */
while (raidPtr->parity_rewrite_in_progress) {
printf("raid%d: Waiting for parity re-write to exit...\n",
raidPtr->raidid);
tsleep(&raidPtr->parity_rewrite_in_progress, PRIBIO,
"rfprwshutdown", 0);
}
/* Wait for any reconstruction to stop... */
while (raidPtr->reconInProgress) {
printf("raid%d: Waiting for reconstruction to stop...\n",
raidPtr->raidid);
tsleep(&raidPtr->waitForReconCond, PRIBIO,
"rfreshutdown",0);
}
raidPtr->valid = 0;
if (raidPtr->parity_map != NULL)
rf_paritymap_detach(raidPtr);
rf_update_component_labels(raidPtr, RF_FINAL_COMPONENT_UPDATE);
rf_UnconfigureVnodes(raidPtr);
rf_FreeEmergBuffers(raidPtr);
rf_ShutdownList(&raidPtr->shutdownList);
rf_UnconfigureArray();
return (0);
}
/*
* Called whenever an array is shutdown
*/
static void
rf_UnconfigureArray()
{
int rc;
RF_LOCK_MUTEX(configureMutex);
if (--configureCount == 0) { /* if no active configurations, shut
* everything down */
isconfigged = 0;
rc = rf_ShutdownList(&globalShutdown);
if (rc) {
RF_ERRORMSG1("RAIDFRAME: unable to do global shutdown, rc=%d\n", rc);
}
rf_shutdown_threadid();
/*
* We must wait until now, because the AllocList module
* uses the DebugMem module.
*/
if (rf_memDebug)
rf_print_unfreed();
}
RF_UNLOCK_MUTEX(configureMutex);
}
/*
* Called whenever an array is shutdown
*/
static void
rf_UnconfigureArray()
{
RF_LOCK_LKMGR_MUTEX(configureMutex);
if (--configureCount == 0) { /* if no active configurations, shut
* everything down */
isconfigged = 0;
rf_ShutdownList(&globalShutdown);
/*
* We must wait until now, because the AllocList module
* uses the DebugMem module.
*/
#if RF_DEBUG_MEM
if (rf_memDebug)
rf_print_unfreed();
#endif
}
RF_UNLOCK_LKMGR_MUTEX(configureMutex);
}