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find_free_devnum: avoid auto-using names in /etc/mdadm.conf 

high-number names like "/dev/md126" shouldn't be in /etc/mdadm.conf,
but if they are they should be ignored when choosing an
unused number.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2012-08-20 10:50:42 +10:00
parent a99d346971
commit fb52f2457a
1 changed files with 4 additions and 0 deletions
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4
util.c
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@ -811,10 +811,14 @@ int find_free_devnum(int use_partitions)
devnum = devnum ? devnum-1 : (1<<20)-1) {
char *dn;
int _devnum;
char nbuf[50];
_devnum = use_partitions ? (-1-devnum) : devnum;
if (mddev_busy(_devnum))
continue;
sprintf(nbuf, "%s%d", use_partitions?"mdp":"md", devnum);
if (!conf_name_is_free(nbuf))
continue;
/* make sure it is new to /dev too, at least as a
* non-standard */
dn = map_dev(dev2major(_devnum), dev2minor(_devnum), 0);