diff options
Diffstat (limited to 'module/zfs/zvol.c')
| -rw-r--r-- | module/zfs/zvol.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/module/zfs/zvol.c b/module/zfs/zvol.c index ba26543f7..125d58de9 100644 --- a/module/zfs/zvol.c +++ b/module/zfs/zvol.c @@ -46,6 +46,7 @@ #include <sys/zvol.h> #include <linux/blkdev_compat.h> +unsigned int zvol_inhibit_dev = 0; unsigned int zvol_major = ZVOL_MAJOR; unsigned int zvol_threads = 32; @@ -1341,6 +1342,9 @@ zvol_create_minors(const char *pool) spa_t *spa = NULL; int error = 0; + if (zvol_inhibit_dev) + return (0); + mutex_enter(&zvol_state_lock); if (pool) { error = dmu_objset_find_spa(NULL, pool, zvol_create_minors_cb, @@ -1370,6 +1374,9 @@ zvol_remove_minors(const char *pool) zvol_state_t *zv, *zv_next; char *str; + if (zvol_inhibit_dev) + return; + str = kmem_zalloc(MAXNAMELEN, KM_SLEEP); if (pool) { (void) strncpy(str, pool, strlen(pool)); @@ -1431,6 +1438,9 @@ zvol_fini(void) list_destroy(&zvol_state_list); } +module_param(zvol_inhibit_dev, uint, 0644); +MODULE_PARM_DESC(zvol_inhibit_dev, "Do not create zvol device nodes"); + module_param(zvol_major, uint, 0444); MODULE_PARM_DESC(zvol_major, "Major number for zvol device"); |