Only attach the checker if the rbd image has the exclusive lock enabled. Signed-off-by: Mike Christie <mchri...@redhat.com> --- libmultipath/checkers/rbd.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/libmultipath/checkers/rbd.c b/libmultipath/checkers/rbd.c index f0497db..89d7525 100644 --- a/libmultipath/checkers/rbd.c +++ b/libmultipath/checkers/rbd.c @@ -34,6 +34,8 @@ typedef int (thread_fn)(struct rbd_checker_context *ct, char *msg); #define RBD_MSG(msg, fmt, args...) snprintf(msg, CHECKER_MSG_LEN, fmt, ##args); +#define RBD_FEATURE_EXCLUSIVE_LOCK (1 << 2) + struct rbd_checker_context { int rbd_bus_id; char *client_addr; @@ -66,8 +68,9 @@ int libcheck_init(struct checker * c) struct udev_device *bus_dev; struct udev *udev; struct stat sb; - const char *block_name, *addr, *config_info; + const char *block_name, *addr, *config_info, *features_str; const char *image, *pool, *snap, *username; + uint64_t features = 0; char sysfs_path[PATH_SIZE]; int ret; @@ -120,6 +123,15 @@ int libcheck_init(struct checker * c) if (!ct->client_addr) goto free_dev; + features_str = udev_device_get_sysattr_value(bus_dev, "features"); + if (!features_str) + goto free_addr; + features = strtoll(features_str, NULL, 16); + if (!(features & RBD_FEATURE_EXCLUSIVE_LOCK)) { + condlog(3, "Exclusive lock not set."); + goto free_addr; + } + config_info = udev_device_get_sysattr_value(bus_dev, "config_info"); if (!config_info) goto free_addr; -- 2.7.2 -- dm-devel mailing list dm-devel@redhat.com https://www.redhat.com/mailman/listinfo/dm-devel