fs/zfs/spa.c

179  * to get the vdev stats associated with the imported devices.
501 			 * Make sure the vdev config is bootable
786  * the root vdev's guid, our own pool guid, and then mark all of our
1146 	    offsetof(struct vdev, vdev_txg_node));
1234  * Verify a pool configuration, and construct the vdev tree appropriately.  This
1235  * will create all the necessary vdevs in the appropriate layout, with each vdev
1237  * All vdev validation is done by the vdev_alloc() routine.
1433 	 * for basic validation purposes) and one in the active vdev
1435 	 * validate each vdev on the spare list.  If the vdev also exists in the
1436 	 * active configuration, then we also mark this vdev as an active spare.
1454 			 * able to load the vdev.  Otherwise, importing a pool
1544 				 * Retain previous vdev for add/remove ops.
1554 			 * Create new vdev
1562 			 * Commit this vdev as an l2cache device,
1656  * Checks to see if the given vdev could not be opened, in which case we post a
1726 	 * Compare the root vdev tree with the information we have
1727 	 * from the MOS config (mrvd). Check each top-level vdev
1737 		 * about the top-level vdev then use that vdev instead.
1761 			 * Swap the missing vdev with the data we were
2076 spa_vdev_err(vdev_t *vdev, vdev_aux_t aux, int err)
2078 	vdev_set_state(vdev, B_TRUE, VDEV_STATE_CANT_OPEN, aux);
2091  * we do a reopen() call.  If the vdev label for every disk that was
2121 		if (glist[i] == 0)	/* vdev is hole */
2283 	 * Parse the configuration into a vdev tree.  We explicitly set the
2312 	 * We need to validate the vdev labels against the configuration that
2314 	 * mosconfig is true then we're validating the vdev labels based on
2318 	 * the vdev config.
2413 	 * If the vdev guid sum doesn't match the uberblock, we have an
2748 	 * Load the vdev state for all toplevel vdevs.
2790 		 * root vdev.  If it can't be opened, it indicates one or
3029  * The stats information (gen/count/ustats) is used to gather vdev statistics at
3100 			 * information: the state of each vdev after the
3243  * Add l2cache device information to the nvlist, including vdev stats.
3413  * array of nvlists, each which describes a valid leaf vdev.  If this is an
3673 	 * Create the root vdev.
3871 	 * Add this top-level vdev to the child array.
3880 	 * Put this pool's top-level vdevs into a root vdev.
3891 	 * Replace the existing vdev_tree with the new root vdev in
3900  * Walk the vdev tree and see if we can find a device with "better"
3936  * the vdev (e.g. "id1,sd@SSEAGATE..." or "/pci@1f,0/ide@d/disk@0,0:a").
3937  * The GRUB "findroot" command will return the vdev we should boot.
3991 	 * Build up a vdev tree based on the boot device's label config.
4008 	 * Get the boot vdev.
4011 		cmn_err(CE_NOTE, "Can not find the boot vdev for guid %llu",
4030 	 * If the boot device is part of a spare vdev then ensure that
4090 	 * Multi-vdev root pool configuration discovery is not supported yet.
4134 	 * Create pool config based on the best vdev config.
4139 	 * Put this pool's top-level vdevs into a root vdev.
4152 	 * Replace the existing vdev_tree with the new root vdev in
4158 	 * Drop vdev config elements that should not be present at pool level.
4235 	 * Build up a vdev tree based on the boot device's label config.
4741 	 * Transfer each new top-level vdev from vd to rvd.
4746 		 * Set the vdev id to the first hole, if one exists.
4801  * a device that is not mirrored, we automatically insert the mirror vdev.
4805  * mirror using the 'replacing' vdev, which is functionally identical to
4806  * the mirror vdev (it actually reuses all the same ops) but has a few
4860 		 * vdev.
4880 		 * want to create a replacing vdev.  The user is not allowed to
4881 		 * attach to a spared vdev child unless the 'isspare' state is
4907 	 * than the top-level vdev.
4933 	 * mirror/replacing/spare vdev above oldvd.
4997 	spa_history_log_internal(spa, "vdev attach", NULL,
4998 	    "%s vdev=%s %s vdev=%s",
5010  * Detach a device from a mirror or replacing vdev.
5013  * is a replacing vdev.
5043 	 * vdev that's replacing B with C.  The user's intent in replacing
5051 	 * that C's parent is still the replacing vdev R.
5084 	 * If we are detaching the second disk from a replacing vdev, then
5085 	 * check to see if we changed the original vdev's path to have "/old"
5140 	 * do it now, marking the vdev as no longer a spare in the process.
5156 	 * If the parent mirror/replacing vdev only has one child,
5168 	 * may have been the previous top-level vdev.
5174 	 * Reevaluate the parent vdev state.
5182 	 * add metaslabs (i.e. grow the pool). We need to reopen the vdev
5212 	    "vdev=%s", vdpath);
5216 	 * If this was the removal of the original device in a hot spare vdev,
5263 	vdev_t *rvd, **vml = NULL;			/* vdev modify list */
5320 	/* then, loop over each vdev and validate it */
5488 				    "vdev=%s", vml[c]->vdev_path);
5609 	 * associated with this vdev, and wait for these changes to sync.
5659 	 * Reassess the health of our root vdev.
5667  * Removing a device from the vdev namespace requires several steps
5734 		 * Stop allocating from this vdev.
5746 		 * Attempt to evacuate the vdev.
5753 		 * If we couldn't evacuate the vdev, unwind.
5761 		 * Clean up the vdev namespace.
5773 		 * There is no vdev of any kind with the specified guid.
5788  * Find any device that's done replacing, or a vdev marked 'unspare' that's
5804 	 * vdev in the list to be the oldest vdev, and the last one to be
5806 	 * the case where the newest vdev is faulted, we will not automatically
5905  * Update the stored path or FRU for this vdev.
6017 		/* Tell userspace that the vdev is gone. */
6098 			spa_history_log_internal(spa, "vdev online", NULL,
6501 			 * to do this for pool creation since the vdev's
6684 	 * If there are any pending vdev state changes, convert them
6693 		 * eliminate the aux vdev wart by integrating all vdevs
6694 		 * into the root vdev tree.
6742 	 * Set the top-level vdev's max queue depth. Evaluate each
6840 	 * Rewrite the vdev configuration (which includes the uberblock)
6850 		 * We hold SCL_STATE to prevent vdev open/close/etc.
6851 		 * while we're attempting to write the vdev labels.
7170  * filled in from the spa and (optionally) the vdev.  This doesn't do anything