LU-8809 osp: print more opd_pre information in LASSERTF()

[fs/lustre-release.git] / lustre / utils / mount_utils_zfs.c

diff --git a/lustre/utils/mount_utils_zfs.c b/lustre/utils/mount_utils_zfs.c
index 592f18d..cdb45cb 100644 (file)
--- a/lustre/utils/mount_utils_zfs.c
+++ b/lustre/utils/mount_utils_zfs.c
@@ -32,6 +32,8 @@
 #include <string.h>
 #include <libzfs.h>
 
+#define HOSTID_PATH "/etc/hostid"
+
 /* Persistent mount data is stored in these user attributes */
 #define LDD_PREFIX             "lustre:"
 #define LDD_VERSION_PROP       LDD_PREFIX "version"
@@ -198,6 +200,23 @@ static int zfs_check_hostid(struct mkfs_opts *mop)
                return rc;
        }
 
+       if (hostid != 0)
+               return 0;
+
+       f = fopen(HOSTID_PATH, "r");
+       if (f == NULL)
+               goto out;
+
+       rc = fread(&hostid, sizeof(uint32_t), 1, f);
+       fclose(f);
+
+       if (rc != 1) {
+               fprintf(stderr, "Failed to read "HOSTID_PATH": %d\n",
+                      rc);
+               hostid = 0;
+       }
+
+out:
        if (hostid == 0) {
                if (mop->mo_flags & MO_NOHOSTID_CHECK) {
                        fprintf(stderr, "WARNING: spl_hostid not set. ZFS has "
@@ -664,12 +683,23 @@ int zfs_init(void)
 
        g_zfs = libzfs_init();
        if (g_zfs == NULL) {
-               fprintf(stderr, "Failed to initialize ZFS library\n");
-               ret = EINVAL;
-       } else {
-               osd_zfs_setup = 1;
+               /* Try to load zfs.ko and retry libzfs_init() */
+
+               ret = system("/sbin/modprobe -q zfs");
+
+               if (ret == 0) {
+                       g_zfs = libzfs_init();
+                       if (g_zfs == NULL)
+                               ret = EINVAL;
+               }
        }
 
+       if (ret == 0)
+               osd_zfs_setup = 1;
+
+       else
+               fprintf(stderr, "Failed to initialize ZFS library: %d\n", ret);
+
        return ret;
 }