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zvol: set mediasize in geom provider right upon its creation

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... instead of deferring the action until first open.
Unlike upstream this has no benefit on FreeBSD.
We know that as soon as the provider is created it is going to be tasted
and thus opened.  Initial mediasize of zero causes tasting failure
and subsequent retasting because of the size change.

MFC after:	14 days
This commit is contained in:
Andriy Gapon 2012-10-06 19:57:27 +00:00
parent a90c9dfeab
commit 8bf749ef3a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=241297
1 changed files with 12 additions and 0 deletions
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12
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c
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@ -475,6 +475,7 @@ zvol_create_minor(const char *name)
zvol_state_t *zv;
objset_t *os;
dmu_object_info_t doi;
uint64_t volsize;
int error;
ZFS_LOG(1, "Creating ZVOL %s...", name);
@ -535,9 +536,20 @@ zvol_create_minor(const char *name)
zv = zs->zss_data = kmem_zalloc(sizeof (zvol_state_t), KM_SLEEP);
#else /* !sun */
error = zap_lookup(os, ZVOL_ZAP_OBJ, "size", 8, 1, &volsize);
if (error) {
ASSERT(error == 0);
dmu_objset_disown(os, zvol_tag);
mutex_exit(&spa_namespace_lock);
return (error);
}
DROP_GIANT();
g_topology_lock();
zv = zvol_geom_create(name);
zv->zv_volsize = volsize;
zv->zv_provider->mediasize = zv->zv_volsize;
#endif /* !sun */
(void) strlcpy(zv->zv_name, name, MAXPATHLEN);