xfs/scrub/rmap_repair.c

54  * list of rmap records requires that we be able to scan both block mapping
71  *      bmaps into rmap records (see 1.1.4).  Set bits in BMBIT for each btree
76  *      target AG.  Remember, multiple bmap records can map to a single rmap
77  *      record, so we cannot simply emit rmap records 1:1.
78  * 1.5. Emit rmap records for each extent in BMBIT and free it.
81  *    and set bits in INOBIT for each btree block.  If the inobt has no records
84  * 5. Emit rmap records for each extent in INOBIT and ICHUNKBIT and free them.
89  * 9. Emit rmap records for each extent in REFCBIT and COWBIT and free them.
96  * 2. Estimate the number of rmapbt blocks needed to store NR records. (= RMB)
109  * 1. Sort the rmap records.
134 	/* rmap records generated from primary metadata */
148 	/* Number of non-freespace records found. */
169 	descr = xchk_xfile_ag_descr(sc, "reverse mapping records");  in xrep_setup_ag_rmapbt()
402  * Iterate a metadata btree rooted in an inode to collect rmap records for
436  * Iterate the block mapping btree to collect rmap records for anything in this
459 		 * mapping records.  This avoids loading the incore extent  in xrep_rmap_scan_bmbt()
479  * Iterate the in-core extent cache to collect rmap records for anything in
683 	 * Note that if there are zero records in the inobt then query_all does  in xrep_rmap_find_inode_rmaps()
812 /* Check and count all the records that we gathered. */
924 	 * number of rmap records stashed in the btree.  This should reflect  in xrep_rmap_find_rmaps()
926 	 * all our records before we start building a new btree, which requires  in xrep_rmap_find_rmaps()
964  * number of blocks needed to store the previously observed rmapbt records and
992 	 * all the rmap records (including the ones that reflect the changes we  in xrep_rmap_try_reserve()
1001 	 * interactions with the rmap records because all three space btrees  in xrep_rmap_try_reserve()
1094 	 * records and the ones we'll create for the free space metadata.  in xrep_rmap_reserve_space()
1210 	 * compute the OWN_AG records /after/ allocating blocks for the records  in xrep_rmap_alloc_vextent()
1239 /* Count the records in this btree. */
1311 	 * Count the rmapbt records again, because the space reservation  in xrep_rmap_build_new_tree()
1312 	 * for the rmapbt itself probably added more records to the btree.  in xrep_rmap_build_new_tree()
1337 	/* Add all observed rmap records. */  in xrep_rmap_build_new_tree()
1360 	 * reservation to be freed, the corresponding rmap records must also be  in xrep_rmap_build_new_tree()
1432  * a list of gaps in the rmap records and a list of the extents mentioned in