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Monitor: link containers with subarrays in statelist 

Each containers has list of its subarrays. Each subarray
has back link to its parent container.

Signed-off-by: Marcin Labun <marcin.labun@intel.com>
Signed-off-by: Anna Czarnowska <anna.czarnowska@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Marcin Labun 2010-11-22 20:58:07 +11:00 committed by NeilBrown
parent 2e0172b110
commit c3621c0a5f
1 changed files with 36 additions and 0 deletions
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36
Monitor.c
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@ -50,6 +50,11 @@ struct state {
* For others, NoMdDev
*/
struct supertype *metadata;
struct state *subarray;/* for a container it is a link to first subarray
* for a subarray it is a link to next subarray
* in the same container */
struct state *parent; /* for a subarray it is a link to its container
*/
struct state *next;
};
@ -67,6 +72,7 @@ static int add_new_arrays(struct mdstat_ent *mdstat, struct state *statelist,
static void try_spare_migration(struct state *statelist,
char *mailaddr, char *mailfrom,
char *alert_cmd, int dosyslog);
static void link_containers_with_subarrays(struct state *list);
int Monitor(struct mddev_dev *devlist,
char *mailaddr, char *alert_cmd,
@ -680,6 +686,8 @@ static void try_spare_migration(struct state *statelist,
char *alert_cmd, int dosyslog)
{
struct state *st;
link_containers_with_subarrays(statelist);
for (st = statelist; st; st=st->next)
if (st->active < st->raid &&
st->spare == 0 &&
@ -735,6 +743,34 @@ static void try_spare_migration(struct state *statelist,
}
}
}
/* search the statelist to connect external
* metadata subarrays with their containers
* We always completely rebuild the tree from scratch as
* that is safest considering the possibility of entries
* disappearing or changing.
*/
static void link_containers_with_subarrays(struct state *list)
{
struct state *st;
struct state *cont;
for (st = list; st; st = st->next) {
st->parent = NULL;
st->subarray = NULL;
}
for (st = list; st; st = st->next)
if (st->parent_dev != NoMdDev)
for (cont = list; cont; cont = cont->next)
if (!cont->err &&
cont->parent_dev == NoMdDev &&
cont->devnum == st->parent_dev) {
st->parent = cont;
st->subarray = cont->subarray;
cont->subarray = st;
break;
}
}
/* Not really Monitor but ... */
int Wait(char *dev)
{