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Monitor: split out check_donor 

Checking compatibility between arrays for spare migration is going to
become a little more complicated, so split it out into a separate
function.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2010-11-22 20:58:07 +11:00
parent 6d3d44d98c
commit 2feb22efbc
1 changed files with 16 additions and 8 deletions
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24
Monitor.c
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@ -733,6 +733,19 @@ static int move_spare(struct state *st2, struct state *st,
return 0;
}
static int check_donor(struct state *from, struct state *to)
{
if (from == to)
return 0;
if (from->active < from->raid)
return 0;
if (from->spare <= 0)
return 0;
if (!from->spare_group || !to->spare_group)
return 0;
return (strcmp(from->spare_group, to->spare_group) == 0);
}
static void try_spare_migration(struct state *statelist, struct alert_info *info)
{
struct state *st;
@ -740,16 +753,11 @@ static void try_spare_migration(struct state *statelist, struct alert_info *info
link_containers_with_subarrays(statelist);
for (st = statelist; st; st=st->next)
if (st->active < st->raid &&
st->spare == 0 &&
st->spare_group != NULL) {
st->spare == 0) {
struct state *st2;
for (st2=statelist ; st2 ; st2=st2->next)
if (st2 != st &&
st2->spare > 0 &&
st2->active == st2->raid &&
st2->spare_group != NULL &&
strcmp(st->spare_group, st2->spare_group) == 0)
if (move_spare(st2, st, info))
if (check_donor(st2, st)
&& move_spare(st2, st, info))
break;
}
}