18 #include "dev-replace.h"
27  * Device replace overview
39  *   if replace gets canceled, sources device still contains up-to-date data.
55  * Due to the content difference, we need to avoid nocow write when dev-replace
59  * After replace is done, the finishing part is done by swapping the target and
98 		 * We don't have a replace item or it's corrupted.  If there is  in btrfs_init_dev_replace()
99 		 * a replace target, fail the mount.  in btrfs_init_dev_replace()
103 			"found replace target device without a valid replace item");  in btrfs_init_dev_replace()
158 		 * We don't have an active replace item but if there is a  in btrfs_init_dev_replace()
159 		 * replace target, fail the mount.  in btrfs_init_dev_replace()
163 "replace without active item, run 'device scan --forget' on the target device");  in btrfs_init_dev_replace()
183 			   "cannot mount because device replace operation is ongoing and");  in btrfs_init_dev_replace()
191 			   "cannot mount because device replace operation is ongoing and");  in btrfs_init_dev_replace()
227  * Initialize a new device for device replace target from a given source dev
260 		"dev-replace: zoned type of target device mismatch with filesystem");  in btrfs_init_dev_replace_tgtdev()
333  * called from commit_transaction. Writes changed device replace state to
602 	  "cannot replace device %s (devid %llu) due to active swapfile",  in btrfs_dev_replace_start()
638 		DEBUG_WARN("unexpected STARTED or SUSPENDED dev-replace state");  in btrfs_dev_replace_start()
679 	 * groups that are allocated after we started the device replace, and  in btrfs_dev_replace_start()
680 	 * must be done after setting up the device replace state.  in btrfs_dev_replace_start()
779  * When finishing the device replace, before swapping the source device with the
781  * as it is empty because replace works by directly copying the chunks and not
932 	 * Update allocation state in the new device and replace the old device  in btrfs_dev_replace_finishing()
1008 	/* replace the sysfs entry */  in btrfs_dev_replace_finishing()
1027  * Read progress of device replace status according to the state and last
1118 		 * Scrub doing the replace isn't running so we need to do the  in btrfs_dev_replace_cancel()
1133 		/* Scrub for replace must not be running in suspended state */  in btrfs_dev_replace_cancel()
1223 	 * dev-replace to start anyway.  in btrfs_resume_dev_replace_async()
1231 		"cannot resume dev-replace, other exclusive operation running");  in btrfs_resume_dev_replace_async()