Lines Matching full:maps

36  * Log Space Maps
38  * Log space maps are an optimization in ZFS metadata allocations for pools
42  * FREE records to almost every metaslab. With log space maps, we hold their
44  * for persistence. As more blocks are accumulated in the log space maps and
49  * map) and saves import time by making old log space maps obsolete and
51  * its entries have made it to their corresponding metaslab space maps].
60  *   This entry is our on-disk reference of the log space maps that exist in
94  *   oldest flushed metaslab to distinguish which log space maps have become
104  *   nodes represent the log space maps in the pool. This in-memory
105  *   representation of log space maps in the pool sorts the log space maps by
121  *   in each TXG by iterating over all the log space maps and looking at their
147  * We try to keep the total number of blocks in the log space maps in check
152  * acceptable for the log space maps to have and try not to cross it.
175  * This is used as the block size for the space maps used for the
176  * log space map feature. These space maps benefit from a bigger
201  * the log space maps. It is expressed as a percentage of the total number of
228  *    entries in metaslab space maps are generally single-word.
278  * creating log space maps and therefore we won't be flushing. On the other
439 		 * while reading the log space maps.
452  * old log space maps. Since we can only destroy the oldest log space maps,
482  * metaslab will destroy all the log space maps older than its ms_unflushed_txg
488  * heuristics decided to do so). When that happens all the log space maps get
490  * any log blocks yet. As log space maps get destroyed with every metaslab that
493  * current TXG is in the same summary entry with other log space maps that
556 		 * got an error while reading the log space maps.
809 	 * metaslabs and attempt to destroy old log space maps.
927 	/* Free all log space maps older than the oldest_flushed_txg. */
999  * Find all the log space maps stored in the space map ZAP and sort
1138 	 * to read the log space maps.
1191 		    "Read %llu of %lu log space maps", (u_longlong_t)nsm,
1220 	    "Read %lu log space maps (%llu total blocks - blksz = %llu bytes) "