Handle ZPOOL_STATUS_HOSTID_MISMATCH in zpool status

Verbatim imports can cause hostid mismatches, but things otherwise work. `zpool
status` does not handle this and will fail when assertions are enabled:

```
zpool: ../../cmd/zpool/zpool_main.c:4418: status_callback: Assertion `reason == ZPOOL_STATUS_OK' failed.

Program received signal SIGABRT, Aborted.
```

Lets instead add a case to display an informative message such as this:

```
  pool: rpool
 state: ONLINE
status: Mismatch between pool hostid and system hostid on imported pool.
        This pool was previously imported into a system with a different hostid,
        and then was verbatim imported into this system.
action: Export this pool on all systems on which it is imported.
        Then import it to correct the mismatch.
   see: http://zfsonlinux.org/msg/ZFS-8000-EY
  scan: scrub repaired 0 in 0h8m with 0 errors on Thu Apr 17 19:43:57 2014
config:

        NAME        STATE     READ WRITE CKSUM
        rpool       ONLINE       0     0     0
          sda       ONLINE       0     0     0

errors: No known data errors
```

Signed-off-by: Richard Yao <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #2342

1 files changed, 11 insertions, 0 deletions

diff --git a/cmd/zpool/zpool_main.c b/cmd/zpool/zpool_main.c
index e38213c85..aa166a9c0 100644
--- a/cmd/zpool/zpool_main.c
+++ b/cmd/zpool/zpool_main.c
@@ -4389,6 +4389,17 @@ status_callback(zpool_handle_t *zhp, void *data)
 		    "'zpool clear'.\n"));
 		break;
 
+	case ZPOOL_STATUS_HOSTID_MISMATCH:
+		(void) printf(gettext("status: Mismatch between pool hostid "
+		    "and system hostid on imported pool.\n\tThis pool was "
+		    "previously imported into a system with a different "
+		    "hostid,\n\tand then was verbatim imported into this "
+		    "system.\n"));
+		(void) printf(gettext("action: Export this pool on all systems "
+		    "on which it is imported.\n"
+		    "\tThen import it to correct the mismatch.\n"));
+		break;
+
 	case ZPOOL_STATUS_ERRATA:
 		(void) printf(gettext("status: Errata #%d detected.\n"),
 		    errata);