@@ -4683,6 +4683,38 @@ out_err:
}
/*
+ * Return pool id (>= 0) or a negative error code.
+ */
+static int rbd_add_get_pool_id(struct rbd_client *rbdc, const char *pool_name)
+{
+ u64 newest_epoch;
+ unsigned long timeout = rbdc->client->options->mount_timeout * HZ;
+ int tries = 0;
+ int ret;
+
+again:
+ ret = ceph_pg_poolid_by_name(rbdc->client->osdc.osdmap, pool_name);
+ if (ret == -ENOENT && tries++ < 1) {
+ ret = ceph_monc_do_get_version(&rbdc->client->monc, "osdmap",
+ &newest_epoch);
+ if (ret < 0)
+ return ret;
+
+ if (rbdc->client->osdc.osdmap->epoch < newest_epoch) {
+ ceph_monc_request_next_osdmap(&rbdc->client->monc);
+ (void) ceph_monc_wait_osdmap(&rbdc->client->monc,
+ newest_epoch, timeout);
+ goto again;
+ } else {
+ /* the osdmap we have is new enough */
+ return -ENOENT;
+ }
+ }
+
+ return ret;
+}
+
+/*
* An rbd format 2 image has a unique identifier, distinct from the
* name given to it by the user. Internally, that identifier is
* what's used to specify the names of objects related to the image.
@@ -5053,7 +5085,6 @@ static ssize_t do_rbd_add(struct bus_type *bus,
struct rbd_options *rbd_opts = NULL;
struct rbd_spec *spec = NULL;
struct rbd_client *rbdc;
- struct ceph_osd_client *osdc;
bool read_only;
int rc = -ENOMEM;
@@ -5075,8 +5106,7 @@ static ssize_t do_rbd_add(struct bus_type *bus,
}
/* pick the pool */
- osdc = &rbdc->client->osdc;
- rc = ceph_pg_poolid_by_name(osdc->osdmap, spec->pool_name);
+ rc = rbd_add_get_pool_id(rbdc, spec->pool_name);
if (rc < 0)
goto err_out_client;
spec->pool_id = (u64)rc;
Given an existing idle mapping (img1), mapping an image (img2) in a newly created pool (pool2) fails: $ ceph osd pool create pool1 8 8 $ rbd create --size 1000 pool1/img1 $ sudo rbd map pool1/img1 $ ceph osd pool create pool2 8 8 $ rbd create --size 1000 pool2/img2 $ sudo rbd map pool2/img2 rbd: sysfs write failed rbd: map failed: (2) No such file or directory This is because client instances are shared by default and we don't request an osdmap update when bumping a ref on an existing client. The fix is to use the mon_get_version request to see if the osdmap we have is the latest, and block until the requested update is received if it's not. Fixes: http://tracker.ceph.com/issues/8184 Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> --- v2: - send mon_get_version request and wait for a reply only if we were unable to locate the pool (i.e. don't hurt the common case) drivers/block/rbd.c | 36 +++++++++++++++++++++++++++++++++--- 1 file changed, 33 insertions(+), 3 deletions(-)