X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=lib%2Flibzfs%2Flibzfs_pool.c;h=fd734d8b48ede7af2de5629cedc671c9878dd359;hb=9babb37438b58e77bad04e820d5702e15b79e6a6;hp=75ecc54e27c1d8bafa89516893d59780454f50a9;hpb=d164b2093561a9771db07346e6fffc9ca19427a2;p=zfs.git

diff --git a/lib/libzfs/libzfs_pool.c b/lib/libzfs/libzfs_pool.c
index 75ecc54..fd734d8 100644
--- a/lib/libzfs/libzfs_pool.c
+++ b/lib/libzfs/libzfs_pool.c
@@ -42,6 +42,7 @@
 #include <sys/zfs_ioctl.h>
 #include <sys/zio.h>
 #include <strings.h>
+#include <dlfcn.h>
 
 #include "zfs_namecheck.h"
 #include "zfs_prop.h"
@@ -55,6 +56,10 @@ static int read_efi_label(nvlist_t *config, diskaddr_t *sb);
 #define	BOOTCMD	"installboot(1M)"
 #endif
 
+#define	DISK_ROOT	"/dev/dsk"
+#define	RDISK_ROOT	"/dev/rdsk"
+#define	BACKUP_SLICE	"s2"
+
 /*
  * ====================================================================
  *   zpool property functions
@@ -628,6 +633,12 @@ zpool_expand_proplist(zpool_handle_t *zhp, zprop_list_t **plp)
 
 
 /*
+ * Don't start the slice at the default block of 34; many storage
+ * devices will use a stripe width of 128k, so start there instead.
+ */
+#define	NEW_START_BLOCK	256
+
+/*
  * Validate the given pool name, optionally putting an extended error message in
  * 'buf'.
  */
@@ -1369,46 +1380,90 @@ zpool_scrub(zpool_handle_t *zhp, pool_scrub_type_t type)
 }
 
 /*
+ * Find a vdev that matches the search criteria specified. We use the
+ * the nvpair name to determine how we should look for the device.
  * 'avail_spare' is set to TRUE if the provided guid refers to an AVAIL
  * spare; but FALSE if its an INUSE spare.
  */
 static nvlist_t *
-vdev_to_nvlist_iter(nvlist_t *nv, const char *search, uint64_t guid,
-    boolean_t *avail_spare, boolean_t *l2cache, boolean_t *log)
+vdev_to_nvlist_iter(nvlist_t *nv, nvlist_t *search, boolean_t *avail_spare,
+    boolean_t *l2cache, boolean_t *log)
 {
 	uint_t c, children;
 	nvlist_t **child;
-	uint64_t theguid, present;
-	char *path;
-	uint64_t wholedisk = 0;
 	nvlist_t *ret;
 	uint64_t is_log;
+	char *srchkey;
+	nvpair_t *pair = nvlist_next_nvpair(search, NULL);
 
-	verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &theguid) == 0);
+	/* Nothing to look for */
+	if (search == NULL || pair == NULL)
+		return (NULL);
+
+	/* Obtain the key we will use to search */
+	srchkey = nvpair_name(pair);
+
+	switch (nvpair_type(pair)) {
+	case DATA_TYPE_UINT64: {
+		uint64_t srchval, theguid, present;
+
+		verify(nvpair_value_uint64(pair, &srchval) == 0);
+		if (strcmp(srchkey, ZPOOL_CONFIG_GUID) == 0) {
+			if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT,
+			    &present) == 0) {
+				/*
+				 * If the device has never been present since
+				 * import, the only reliable way to match the
+				 * vdev is by GUID.
+				 */
+				verify(nvlist_lookup_uint64(nv,
+				    ZPOOL_CONFIG_GUID, &theguid) == 0);
+				if (theguid == srchval)
+					return (nv);
+			}
+		}
+		break;
+	}
+
+	case DATA_TYPE_STRING: {
+		char *srchval, *val;
+
+		verify(nvpair_value_string(pair, &srchval) == 0);
+		if (nvlist_lookup_string(nv, srchkey, &val) != 0)
+			break;
 
-	if (search == NULL &&
-	    nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, &present) == 0) {
 		/*
-		 * If the device has never been present since import, the only
-		 * reliable way to match the vdev is by GUID.
+		 * Search for the requested value. We special case the search
+		 * for ZPOOL_CONFIG_PATH when it's a wholedisk. Otherwise,
+		 * all other searches are simple string compares.
 		 */
-		if (theguid == guid)
-			return (nv);
-	} else if (search != NULL &&
-	    nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0) {
-		(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
-		    &wholedisk);
-		if (wholedisk) {
-			/*
-			 * For whole disks, the internal path has 's0', but the
-			 * path passed in by the user doesn't.
-			 */
-			if (strlen(search) == strlen(path) - 2 &&
-			    strncmp(search, path, strlen(search)) == 0)
-				return (nv);
-		} else if (strcmp(search, path) == 0) {
-			return (nv);
+		if (strcmp(srchkey, ZPOOL_CONFIG_PATH) == 0 && val) {
+			uint64_t wholedisk = 0;
+
+			(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
+			    &wholedisk);
+			if (wholedisk) {
+				/*
+				 * For whole disks, the internal path has 's0',
+				 * but the path passed in by the user doesn't.
+				 */
+				if (strlen(srchval) == strlen(val) - 2 &&
+				    strncmp(srchval, val, strlen(srchval)) == 0)
+					return (nv);
+				break;
+			}
 		}
+
+		/*
+		 * Common case
+		 */
+		if (strcmp(srchval, val) == 0)
+			return (nv);
+		break;
+	}
+
+	default:
+		break;
 	}
 
 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
@@ -1416,7 +1471,7 @@ vdev_to_nvlist_iter(nvlist_t *nv, const char *search, uint64_t guid,
 		return (NULL);
 
 	for (c = 0; c < children; c++) {
-		if ((ret = vdev_to_nvlist_iter(child[c], search, guid,
+		if ((ret = vdev_to_nvlist_iter(child[c], search,
 		    avail_spare, l2cache, NULL)) != NULL) {
 			/*
 			 * The 'is_log' value is only set for the toplevel
@@ -1437,7 +1492,7 @@ vdev_to_nvlist_iter(nvlist_t *nv, const char *search, uint64_t guid,
 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES,
 	    &child, &children) == 0) {
 		for (c = 0; c < children; c++) {
-			if ((ret = vdev_to_nvlist_iter(child[c], search, guid,
+			if ((ret = vdev_to_nvlist_iter(child[c], search,
 			    avail_spare, l2cache, NULL)) != NULL) {
 				*avail_spare = B_TRUE;
 				return (ret);
@@ -1448,7 +1503,7 @@ vdev_to_nvlist_iter(nvlist_t *nv, const char *search, uint64_t guid,
 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE,
 	    &child, &children) == 0) {
 		for (c = 0; c < children; c++) {
-			if ((ret = vdev_to_nvlist_iter(child[c], search, guid,
+			if ((ret = vdev_to_nvlist_iter(child[c], search,
 			    avail_spare, l2cache, NULL)) != NULL) {
 				*l2cache = B_TRUE;
 				return (ret);
@@ -1459,24 +1514,48 @@ vdev_to_nvlist_iter(nvlist_t *nv, const char *search, uint64_t guid,
 	return (NULL);
 }
 
+/*
+ * Given a physical path (minus the "/devices" prefix), find the
+ * associated vdev.
+ */
+nvlist_t *
+zpool_find_vdev_by_physpath(zpool_handle_t *zhp, const char *ppath,
+    boolean_t *avail_spare, boolean_t *l2cache, boolean_t *log)
+{
+	nvlist_t *search, *nvroot, *ret;
+
+	verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+	verify(nvlist_add_string(search, ZPOOL_CONFIG_PHYS_PATH, ppath) == 0);
+
+	verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE,
+	    &nvroot) == 0);
+
+	*avail_spare = B_FALSE;
+	ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log);
+	nvlist_free(search);
+
+	return (ret);
+}
+
 nvlist_t *
 zpool_find_vdev(zpool_handle_t *zhp, const char *path, boolean_t *avail_spare,
     boolean_t *l2cache, boolean_t *log)
 {
 	char buf[MAXPATHLEN];
-	const char *search;
 	char *end;
-	nvlist_t *nvroot;
+	nvlist_t *nvroot, *search, *ret;
 	uint64_t guid;
 
+	verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+
 	guid = strtoull(path, &end, 10);
 	if (guid != 0 && *end == '\0') {
-		search = NULL;
+		verify(nvlist_add_uint64(search, ZPOOL_CONFIG_GUID, guid) == 0);
 	} else if (path[0] != '/') {
 		(void) snprintf(buf, sizeof (buf), "%s%s", "/dev/dsk/", path);
-		search = buf;
+		verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, buf) == 0);
 	} else {
-		search = path;
+		verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, path) == 0);
 	}
 
 	verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE,
@@ -1486,8 +1565,10 @@ zpool_find_vdev(zpool_handle_t *zhp, const char *path, boolean_t *avail_spare,
 	*l2cache = B_FALSE;
 	if (log != NULL)
 		*log = B_FALSE;
-	return (vdev_to_nvlist_iter(nvroot, search, guid, avail_spare,
-	    l2cache, log));
+	ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log);
+	nvlist_free(search);
+
+	return (ret);
 }
 
 static int
@@ -1504,81 +1585,142 @@ vdev_online(nvlist_t *nv)
 }
 
 /*
- * Get phys_path for a root pool
- * Return 0 on success; non-zeron on failure.
+ * Helper function for zpool_get_physpaths().
  */
-int
-zpool_get_physpath(zpool_handle_t *zhp, char *physpath)
+static int
+vdev_get_one_physpath(nvlist_t *config, char *physpath, size_t physpath_size,
+    size_t *bytes_written)
 {
+	size_t bytes_left, pos, rsz;
+	char *tmppath;
+	const char *format;
+
+	if (nvlist_lookup_string(config, ZPOOL_CONFIG_PHYS_PATH,
+	    &tmppath) != 0)
+		return (EZFS_NODEVICE);
+
+	pos = *bytes_written;
+	bytes_left = physpath_size - pos;
+	format = (pos == 0) ? "%s" : " %s";
+
+	rsz = snprintf(physpath + pos, bytes_left, format, tmppath);
+	*bytes_written += rsz;
+
+	if (rsz >= bytes_left) {
+		/* if physpath was not copied properly, clear it */
+		if (bytes_left != 0) {
+			physpath[pos] = 0;
+		}
+		return (EZFS_NOSPC);
+	}
+	return (0);
+}
+
+static int
+vdev_get_physpaths(nvlist_t *nv, char *physpath, size_t phypath_size,
+    size_t *rsz, boolean_t is_spare)
+{
+	char *type;
+	int ret;
+
+	if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0)
+		return (EZFS_INVALCONFIG);
+
+	if (strcmp(type, VDEV_TYPE_DISK) == 0) {
+		/*
+		 * An active spare device has ZPOOL_CONFIG_IS_SPARE set.
+		 * For a spare vdev, we only want to boot from the active
+		 * spare device.
+		 */
+		if (is_spare) {
+			uint64_t spare = 0;
+			(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE,
+			    &spare);
+			if (!spare)
+				return (EZFS_INVALCONFIG);
+		}
+
+		if (vdev_online(nv)) {
+			if ((ret = vdev_get_one_physpath(nv, physpath,
+			    phypath_size, rsz)) != 0)
+				return (ret);
+		}
+	} else if (strcmp(type, VDEV_TYPE_MIRROR) == 0 ||
+	    strcmp(type, VDEV_TYPE_REPLACING) == 0 ||
+	    (is_spare = (strcmp(type, VDEV_TYPE_SPARE) == 0))) {
+		nvlist_t **child;
+		uint_t count;
+		int i, ret;
+
+		if (nvlist_lookup_nvlist_array(nv,
+		    ZPOOL_CONFIG_CHILDREN, &child, &count) != 0)
+			return (EZFS_INVALCONFIG);
+
+		for (i = 0; i < count; i++) {
+			ret = vdev_get_physpaths(child[i], physpath,
+			    phypath_size, rsz, is_spare);
+			if (ret == EZFS_NOSPC)
+				return (ret);
+		}
+	}
+
+	return (EZFS_POOL_INVALARG);
+}
+
+/*
+ * Get phys_path for a root pool config.
+ * Return 0 on success; non-zero on failure.
+ */
+static int
+zpool_get_config_physpath(nvlist_t *config, char *physpath, size_t phypath_size)
+{
+	size_t rsz;
 	nvlist_t *vdev_root;
 	nvlist_t **child;
 	uint_t count;
-	int i;
+	char *type;
 
-	/*
-	 * Make sure this is a root pool, as phys_path doesn't mean
-	 * anything to a non-root pool.
-	 */
-	if (!pool_is_bootable(zhp))
-		return (-1);
+	rsz = 0;
 
-	verify(nvlist_lookup_nvlist(zhp->zpool_config,
-	    ZPOOL_CONFIG_VDEV_TREE, &vdev_root) == 0);
+	if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
+	    &vdev_root) != 0)
+		return (EZFS_INVALCONFIG);
 
-	if (nvlist_lookup_nvlist_array(vdev_root, ZPOOL_CONFIG_CHILDREN,
+	if (nvlist_lookup_string(vdev_root, ZPOOL_CONFIG_TYPE, &type) != 0 ||
+	    nvlist_lookup_nvlist_array(vdev_root, ZPOOL_CONFIG_CHILDREN,
 	    &child, &count) != 0)
-		return (-2);
+		return (EZFS_INVALCONFIG);
 
-	for (i = 0; i < count; i++) {
-		nvlist_t **child2;
-		uint_t count2;
-		char *type;
-		char *tmppath;
-		int j;
+	/*
+	 * root pool can not have EFI labeled disks and can only have
+	 * a single top-level vdev.
+	 */
+	if (strcmp(type, VDEV_TYPE_ROOT) != 0 || count != 1 ||
+	    pool_uses_efi(vdev_root))
+		return (EZFS_POOL_INVALARG);
 
-		if (nvlist_lookup_string(child[i], ZPOOL_CONFIG_TYPE, &type)
-		    != 0)
-			return (-3);
-
-		if (strcmp(type, VDEV_TYPE_DISK) == 0) {
-			if (!vdev_online(child[i]))
-				return (-8);
-			verify(nvlist_lookup_string(child[i],
-			    ZPOOL_CONFIG_PHYS_PATH, &tmppath) == 0);
-			(void) strncpy(physpath, tmppath, strlen(tmppath));
-		} else if (strcmp(type, VDEV_TYPE_MIRROR) == 0) {
-			if (nvlist_lookup_nvlist_array(child[i],
-			    ZPOOL_CONFIG_CHILDREN, &child2, &count2) != 0)
-				return (-4);
-
-			for (j = 0; j < count2; j++) {
-				if (!vdev_online(child2[j]))
-					return (-8);
-				if (nvlist_lookup_string(child2[j],
-				    ZPOOL_CONFIG_PHYS_PATH, &tmppath) != 0)
-					return (-5);
-
-				if ((strlen(physpath) + strlen(tmppath)) >
-				    MAXNAMELEN)
-					return (-6);
-
-				if (strlen(physpath) == 0) {
-					(void) strncpy(physpath, tmppath,
-					    strlen(tmppath));
-				} else {
-					(void) strcat(physpath, " ");
-					(void) strcat(physpath, tmppath);
-				}
-			}
-		} else {
-			return (-7);
-		}
-	}
+	(void) vdev_get_physpaths(child[0], physpath, phypath_size, &rsz,
+	    B_FALSE);
+
+	/* No online devices */
+	if (rsz == 0)
+		return (EZFS_NODEVICE);
 
 	return (0);
 }
 
 /*
+ * Get phys_path for a root pool
+ * Return 0 on success; non-zero on failure.
+ */
+int
+zpool_get_physpath(zpool_handle_t *zhp, char *physpath, size_t phypath_size)
+{
+	return (zpool_get_config_physpath(zhp->zpool_config, physpath,
+	    phypath_size));
+}
+
+/*
  * Returns TRUE if the given guid corresponds to the given type.
  * This is used to check for hot spares (INUSE or not), and level 2 cache
  * devices.
@@ -1607,6 +1749,45 @@ is_guid_type(zpool_handle_t *zhp, uint64_t guid, const char *type)
 }
 
 /*
+ * If the device has being dynamically expanded then we need to relabel
+ * the disk to use the new unallocated space.
+ */
+static int
+zpool_relabel_disk(libzfs_handle_t *hdl, const char *name)
+{
+	char path[MAXPATHLEN];
+	char errbuf[1024];
+	int fd, error;
+	int (*_efi_use_whole_disk)(int);
+
+	if ((_efi_use_whole_disk = (int (*)(int))dlsym(RTLD_DEFAULT,
+	    "efi_use_whole_disk")) == NULL)
+		return (-1);
+
+	(void) snprintf(path, sizeof (path), "%s/%s", RDISK_ROOT, name);
+
+	if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) {
+		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
+		    "relabel '%s': unable to open device"), name);
+		return (zfs_error(hdl, EZFS_OPENFAILED, errbuf));
+	}
+
+	/*
+	 * It's possible that we might encounter an error if the device
+	 * does not have any unallocated space left. If so, we simply
+	 * ignore that error and continue on.
+	 */
+	error = _efi_use_whole_disk(fd);
+	(void) close(fd);
+	if (error && error != VT_ENOSPC) {
+		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
+		    "relabel '%s': unable to read disk capacity"), name);
+		return (zfs_error(hdl, EZFS_NOCAP, errbuf));
+	}
+	return (0);
+}
+
+/*
  * Bring the specified vdev online.   The 'flags' parameter is a set of the
  * ZFS_ONLINE_* flags.
  */
@@ -1617,15 +1798,20 @@ zpool_vdev_online(zpool_handle_t *zhp, const char *path, int flags,
 	zfs_cmd_t zc = { 0 };
 	char msg[1024];
 	nvlist_t *tgt;
-	boolean_t avail_spare, l2cache;
+	boolean_t avail_spare, l2cache, islog;
 	libzfs_handle_t *hdl = zhp->zpool_hdl;
 
-	(void) snprintf(msg, sizeof (msg),
-	    dgettext(TEXT_DOMAIN, "cannot online %s"), path);
+	if (flags & ZFS_ONLINE_EXPAND) {
+		(void) snprintf(msg, sizeof (msg),
+		    dgettext(TEXT_DOMAIN, "cannot expand %s"), path);
+	} else {
+		(void) snprintf(msg, sizeof (msg),
+		    dgettext(TEXT_DOMAIN, "cannot online %s"), path);
+	}
 
 	(void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
 	if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
-	    NULL)) == NULL)
+	    &islog)) == NULL)
 		return (zfs_error(hdl, EZFS_NODEVICE, msg));
 
 	verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
@@ -1634,6 +1820,31 @@ zpool_vdev_online(zpool_handle_t *zhp, const char *path, int flags,
 	    is_guid_type(zhp, zc.zc_guid, ZPOOL_CONFIG_SPARES) == B_TRUE)
 		return (zfs_error(hdl, EZFS_ISSPARE, msg));
 
+	if (flags & ZFS_ONLINE_EXPAND ||
+	    zpool_get_prop_int(zhp, ZPOOL_PROP_AUTOEXPAND, NULL)) {
+		char *pathname = NULL;
+		uint64_t wholedisk = 0;
+
+		(void) nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_WHOLE_DISK,
+		    &wholedisk);
+		verify(nvlist_lookup_string(tgt, ZPOOL_CONFIG_PATH,
+		    &pathname) == 0);
+
+		/*
+		 * XXX - L2ARC 1.0 devices can't support expansion.
+		 */
+		if (l2cache) {
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "cannot expand cache devices"));
+			return (zfs_error(hdl, EZFS_VDEVNOTSUP, msg));
+		}
+
+		if (wholedisk) {
+			pathname += strlen(DISK_ROOT) + 1;
+			(void) zpool_relabel_disk(zhp->zpool_hdl, pathname);
+		}
+	}
+
 	zc.zc_cookie = VDEV_STATE_ONLINE;
 	zc.zc_obj = flags;
 
@@ -1684,6 +1895,12 @@ zpool_vdev_offline(zpool_handle_t *zhp, const char *path, boolean_t istmp)
 		 */
 		return (zfs_error(hdl, EZFS_NOREPLICAS, msg));
 
+	case EEXIST:
+		/*
+		 * The log device has unplayed logs
+		 */
+		return (zfs_error(hdl, EZFS_UNPLAYED_LOGS, msg));
+
 	default:
 		return (zpool_standard_error(hdl, errno, msg));
 	}
@@ -1888,6 +2105,14 @@ zpool_vdev_attach(zpool_handle_t *zhp,
 			(void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Please "
 			    "be sure to invoke %s to make '%s' bootable.\n"),
 			    BOOTCMD, new_disk);
+
+			/*
+			 * XXX need a better way to prevent user from
+			 * booting up a half-baked vdev.
+			 */
+			(void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Make "
+			    "sure to wait until resilver is done "
+			    "before rebooting.\n"));
 		}
 		return (0);
 	}
@@ -2803,14 +3028,6 @@ zpool_obj_to_path(zpool_handle_t *zhp, uint64_t dsobj, uint64_t obj,
 	free(mntpnt);
 }
 
-#define	RDISK_ROOT	"/dev/rdsk"
-#define	BACKUP_SLICE	"s2"
-/*
- * Don't start the slice at the default block of 34; many storage
- * devices will use a stripe width of 128k, so start there instead.
- */
-#define	NEW_START_BLOCK	256
-
 /*
  * Read the EFI label from the config, if a label does not exist then
  * pass back the error to the caller. If the caller has passed a non-NULL