Illumos #1346: zfs incremental receive may leave behind temporary clones

1356 zfs dataset prefetch code not working
Reviewed by: Matthew Ahrens <matt@delphix.com>
Reviewed by: Dan McDonald <danmcd@nexenta.com>
Approved by: Gordon Ross <gwr@nexenta.com>

References to Illumos issue:
  https://www.illumos.org/issues/1346
  https://www.illumos.org/issues/1356

Ported-by: Richard Yao <ryao@cs.stonybrook.edu>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #647

diff --git a/module/zfs/zfs_ioctl.c b/module/zfs/zfs_ioctl.c
index 90ebb571166b0dd6612d043973335665aa1092cb..17dc35d74cf0466b6960c923319b6384f2b74072 100644 (file)
--- a/module/zfs/zfs_ioctl.c
+++ b/module/zfs/zfs_ioctl.c
@@ -1923,8 +1923,10 @@ top:
                uint64_t cookie = 0;
                int len = sizeof (zc->zc_name) - (p - zc->zc_name);
 
-               while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0)
-                       (void) dmu_objset_prefetch(p, NULL);
+               while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0) {
+                       if (!dataset_name_hidden(zc->zc_name))
+                               (void) dmu_objset_prefetch(zc->zc_name, NULL);
+               }
        }
 
        do {