1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Copyright (C) 2019-2023 Oracle.  All Rights Reserved.
21  * Scrub and In-Core Filesystem Health Assessments
26  * cross-reference records between data structures.  Therefore, scrub is in a
40  * 3. If the scrubber finds that A is clean, use sick_mask to clear the incore
51  * 6. If repair rebuilds A correctly and the subsequent re-scrub of A is clean,
52  * use sick_mask to clear the incore sick flags.  This should have the effect
55  * 7. If repair rebuilds A incorrectly, the re-scrub will find it corrupt and
67  * of 5-7 still apply, but with a sick_mask that covers everything being
71 /* Map our scrub type to a sick mask and a set of health update functions. */
121 /* Return the health status mask for this scrub type. */
130  * If the scrub state is clean, add @mask to the scrub sick mask to clear
136 	unsigned int		mask)  in xchk_mark_healthy_if_clean()  argument
138 	if (!(sc->sm->sm_flags & (XFS_SCRUB_OFLAG_CORRUPT |  in xchk_mark_healthy_if_clean()
140 		sc->healthy_mask |= mask;  in xchk_mark_healthy_if_clean()
151 	unsigned int		mask)  in xchk_file_looks_zapped()  argument
153 	ASSERT((mask & ~XFS_SICK_INO_ZAPPED) == 0);  in xchk_file_looks_zapped()
155 	if (sc->flags & XREP_ALREADY_FIXED)  in xchk_file_looks_zapped()
158 	return xfs_inode_has_sickness(sc->ip, mask);  in xchk_file_looks_zapped()
162  * Scrub gave the filesystem a clean bill of health, so clear all the indirect
196 	unsigned int		mask = sc->sick_mask;  in xchk_update_health()  local
200 	 * The HEALTHY scrub type is a request from userspace to clear all the  in xchk_update_health()
203 	 * mask check.  in xchk_update_health()
205 	if (sc->sm->sm_type == XFS_SCRUB_TYPE_HEALTHY &&  in xchk_update_health()
206 	    !(sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)) {  in xchk_update_health()
207 		xchk_mark_all_healthy(sc->mp);  in xchk_update_health()
211 	bad = (sc->sm->sm_flags & (XFS_SCRUB_OFLAG_CORRUPT |  in xchk_update_health()
214 		mask |= sc->healthy_mask;  in xchk_update_health()
215 	switch (type_to_health_flag[sc->sm->sm_type].group) {  in xchk_update_health()
219 		if (!mask)  in xchk_update_health()
221 		pag = xfs_perag_get(sc->mp, sc->sm->sm_agno);  in xchk_update_health()
223 			xfs_group_mark_corrupt(pag_group(pag), mask);  in xchk_update_health()
225 			xfs_group_mark_healthy(pag_group(pag), mask);  in xchk_update_health()
229 		if (!sc->ip)  in xchk_update_health()
236 		if (sc->sm->sm_flags & XFS_SCRUB_IFLAG_REPAIR)  in xchk_update_health()
237 			mask |= XFS_SICK_INO_FORGET;  in xchk_update_health()
238 		if (!mask)  in xchk_update_health()
241 			xfs_inode_mark_corrupt(sc->ip, mask);  in xchk_update_health()
243 			xfs_inode_mark_healthy(sc->ip, mask);  in xchk_update_health()
246 		if (!mask)  in xchk_update_health()
249 			xfs_fs_mark_corrupt(sc->mp, mask);  in xchk_update_health()
251 			xfs_fs_mark_healthy(sc->mp, mask);  in xchk_update_health()
254 		if (!mask)  in xchk_update_health()
256 		rtg = xfs_rtgroup_get(sc->mp, sc->sm->sm_agno);  in xchk_update_health()
258 			xfs_group_mark_corrupt(rtg_group(rtg), mask);  in xchk_update_health()
260 			xfs_group_mark_healthy(rtg_group(rtg), mask);  in xchk_update_health()
269 /* Is the given per-AG btree healthy enough for scanning? */
276 	unsigned int		mask = (*curp)->bc_ops->sick_mask;  in xchk_ag_btree_del_cursor_if_sick()  local
282 	 * Otherwise, we're only interested in the btree for cross-referencing.  in xchk_ag_btree_del_cursor_if_sick()
285 	if (sc->sm->sm_type == sm_type)  in xchk_ag_btree_del_cursor_if_sick()
289 	 * If we just repaired some AG metadata, sc->sick_mask will reflect all  in xchk_ag_btree_del_cursor_if_sick()
290 	 * the per-AG metadata types that were repaired.  Exclude these from  in xchk_ag_btree_del_cursor_if_sick()
294 	if ((sc->flags & XREP_ALREADY_FIXED) &&  in xchk_ag_btree_del_cursor_if_sick()
295 	    type_to_health_flag[sc->sm->sm_type].group == XHG_AG)  in xchk_ag_btree_del_cursor_if_sick()
296 		mask &= ~sc->sick_mask;  in xchk_ag_btree_del_cursor_if_sick()
298 	if (xfs_group_has_sickness((*curp)->bc_group, mask)) {  in xchk_ag_btree_del_cursor_if_sick()
299 		sc->sm->sm_flags |= XFS_SCRUB_OFLAG_XFAIL;  in xchk_ag_btree_del_cursor_if_sick()
306  * Quick scan to double-check that there isn't any evidence of lingering
307  * primary health problems.  If we're still clear, then the health update will
314 	struct xfs_mount	*mp = sc->mp;  in xchk_health_record()