* grub-core/disk/diskfilter.c (is_lv_readable): New argument "easily".

All users updated. If easily=1 require raid-5/-6 to be full.
	(is_node_readable): Likewise.
	(scan_devices): Scan incomplete but readable LVs at the end.
	(grub_diskfilter_memberlist): Pull missing devices.
	(insert_array): Skip scanning until device is complete or scan is
	done otherwise.
	* grub-core/disk/mdraid1x_linux.c (grub_mdraid_detect): Fix wrong
	check.
	* include/grub/diskfilter.h (grub_diskfilter_lv): New member scanned.
	* util/raid.c (grub_util_raid_getmembers): Handle "removed" disks.

ChangeLog

@@ -1,3 +1,17 @@
+2012-03-03  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* grub-core/disk/diskfilter.c (is_lv_readable): New argument "easily".
+	All users updated. If easily=1 require raid-5/-6 to be full.
+	(is_node_readable): Likewise.
+	(scan_devices): Scan incomplete but readable LVs at the end.
+	(grub_diskfilter_memberlist): Pull missing devices.
+	(insert_array): Skip scanning until device is complete or scan is
+	done otherwise.
+	* grub-core/disk/mdraid1x_linux.c (grub_mdraid_detect): Fix wrong
+	check.
+	* include/grub/diskfilter.h (grub_diskfilter_lv): New member scanned.
+	* util/raid.c (grub_util_raid_getmembers): Handle "removed" disks.
+
 2012-03-03  Matthew Garrett  <mjg@redhat.com>
 2012-03-03  Vladimir Serbinenko  <phcoder@gmail.com>
 

grub-core/disk/diskfilter.c

@@ -41,24 +41,24 @@ static int lv_num = 0;
 
 static struct grub_diskfilter_lv *
 find_lv (const char *name);
-static int is_lv_readable (struct grub_diskfilter_lv *lv);
+static int is_lv_readable (struct grub_diskfilter_lv *lv, int easily);
 
 
 
 static grub_err_t
-is_node_readable (const struct grub_diskfilter_node *node)
+is_node_readable (const struct grub_diskfilter_node *node, int easily)
 {
   /* Check whether we actually know the physical volume we want to
      read from.  */
   if (node->pv)
     return !!(node->pv->disk);
   if (node->lv)
-    return is_lv_readable (node->lv);
+    return is_lv_readable (node->lv, easily);
   return 0;
 }
 
 static int
-is_lv_readable (struct grub_diskfilter_lv *lv)
+is_lv_readable (struct grub_diskfilter_lv *lv, int easily)
 {
   unsigned i, j;
   if (!lv)
@@ -69,9 +69,11 @@ is_lv_readable (struct grub_diskfilter_lv *lv)
       switch (lv->segments[i].type)
 	{
 	case GRUB_DISKFILTER_RAID6:
+	  if (!easily)
 	    need--;
 	case GRUB_DISKFILTER_RAID4:
 	case GRUB_DISKFILTER_RAID5:
+	  if (!easily)
 	    need--;
 	case GRUB_DISKFILTER_STRIPED:
 	  break;
@@ -92,7 +94,7 @@ is_lv_readable (struct grub_diskfilter_lv *lv)
 	}
 	for (j = 0; j < lv->segments[i].node_count; j++)
 	  {
-	    if (is_node_readable (lv->segments[i].nodes + j))
+	    if (is_node_readable (lv->segments[i].nodes + j, easily))
 	      have++;
 	    if (have >= need)
 	      break;
@@ -192,6 +194,8 @@ scan_devices (const char *arname)
 {
   grub_disk_dev_t p;
   grub_disk_pull_t pull;
+  struct grub_diskfilter_vg *vg;
+  struct grub_diskfilter_lv *lv = NULL;
 
   for (pull = 0; pull < GRUB_DISK_PULL_MAX; pull++)
     for (p = grub_disk_dev_list; p; p = p->next)
@@ -200,9 +204,20 @@ scan_devices (const char *arname)
 	{
 	  if ((p->iterate) (scan_disk, pull))
 	    return;
-	  if (arname && is_lv_readable (find_lv (arname)))
+	  if (arname && is_lv_readable (find_lv (arname), 1))
 	    return;
 	}
+
+  for (vg = array_list; vg; vg = vg->next)
+    {
+      if (vg->lvs)
+	for (lv = vg->lvs; lv; lv = lv->next)
+	  if (!lv->scanned && lv->fullname && lv->became_readable_at)
+	    {
+	      scan_disk (lv->fullname);
+	      lv->scanned = 1;
+	    }
+    }
 }
 
 static int
@@ -243,8 +258,26 @@ grub_diskfilter_memberlist (grub_disk_t disk)
   struct grub_diskfilter_lv *lv = disk->data;
   grub_disk_memberlist_t list = NULL, tmp;
   struct grub_diskfilter_pv *pv;
+  grub_disk_pull_t pull;
+  grub_disk_dev_t p;
+
+  if (!lv->vg->pvs)
+    return NULL;
+
+  pv = lv->vg->pvs;
+  while (pv && pv->disk)
+    pv = pv->next;
+
+  for (pull = 0; pv && pull < GRUB_DISK_PULL_MAX; pull++)
+    for (p = grub_disk_dev_list; pv && p; p = p->next)
+      if (p->id != GRUB_DISK_DEVICE_DISKFILTER_ID
+	  && p->iterate)
+	{
+	  (p->iterate) (scan_disk, pull);
+	  while (pv && pv->disk)
+	    pv = pv->next;
+	}
 
-  if (lv->vg->pvs)
   for (pv = lv->vg->pvs; pv; pv = pv->next)
     {
       if (!pv->disk)
@@ -318,7 +351,7 @@ find_lv (const char *name)
 	{
 	  if (uuid_len == vg->uuid_len
 	      && grub_memcmp (uuidbin, vg->uuid, uuid_len) == 0)
-	    if (is_lv_readable (vg->lvs))
+	    if (is_lv_readable (vg->lvs, 0))
 	      return vg->lvs;
 	}
     }
@@ -328,7 +361,7 @@ find_lv (const char *name)
       if (vg->lvs)
 	for (lv = vg->lvs; lv; lv = lv->next)
 	  if (lv->fullname && grub_strcmp (lv->fullname, name) == 0
-	      && is_lv_readable (lv))
+	      && is_lv_readable (lv, 0))
 	    return lv;
     }
   return NULL;
@@ -997,10 +1030,14 @@ insert_array (grub_disk_t disk, const struct grub_diskfilter_pv_id *id,
 	pv->start_sector += pv->part_start;
 	/* Add the device to the array. */
 	for (lv = array->lvs; lv; lv = lv->next)
-	  if (!lv->became_readable_at && lv->fullname && is_lv_readable (lv))
+	  if (!lv->became_readable_at && lv->fullname && is_lv_readable (lv, 0))
 	    {
 	      lv->became_readable_at = ++inscnt;
+	      if (is_lv_readable (lv, 1))
+		{
 		  scan_disk (lv->fullname);
+		  lv->scanned = 1;
+		}
 	    }
 	break;
       }

grub-core/disk/mdraid1x_linux.c

@@ -177,17 +177,17 @@ grub_mdraid_detect (grub_disk_t disk,
 	/* Spares aren't implemented.  */
 	return NULL;
 
-      if (grub_le_to_cpu32 (sb.dev_number)
-	  >= grub_le_to_cpu32 (sb.raid_disks))
-	/* Spares aren't implemented.  */
-	return NULL;
-
       if (grub_disk_read (disk, sector, 
 			  (char *) &sb.dev_roles[sb.dev_number]
 			  - (char *) &sb,
 			  sizeof (role), &role))
 	return NULL;
 
+      if (grub_le_to_cpu16 (role)
+	  >= grub_le_to_cpu32 (sb.raid_disks))
+	/* Spares aren't implemented.  */
+	return NULL;
+
       id->uuidlen = 0;
       id->id = grub_le_to_cpu16 (role);
 

include/grub/diskfilter.h

@@ -87,7 +87,7 @@ struct grub_diskfilter_lv {
   grub_size_t segment_alloc;
   grub_uint64_t size;
   int became_readable_at;
-
+  int scanned;
   int visible;
 
   /* Pointer to segment_count segments. */

util/raid.c

@@ -70,20 +70,23 @@ grub_util_raid_getmembers (const char *name, int bootable)
 
   devicelist = xmalloc ((info.nr_disks + 1) * sizeof (char *));
 
-  for (i = 0, j = 0; i <info.nr_disks; i++)
+  for (i = 0, j = 0; j < info.nr_disks; i++)
     {
       disk.number = i;
       ret = ioctl (fd, GET_DISK_INFO, &disk);
       if (ret != 0)
 	grub_util_error (_("ioctl GET_DISK_INFO error: %s"), strerror (errno));
       
+      if (disk.state & (1 << MD_DISK_REMOVED))
+	continue;
+
       if (disk.state & (1 << MD_DISK_ACTIVE))
-	{
 	devicelist[j] = grub_find_device (NULL,
 					  makedev (disk.major, disk.minor));
+      else
+	devicelist[j] = NULL;
       j++;
     }
-    }
 
   devicelist[j] = NULL;