Lines Matching refs:from

20 to realize savings from the compression.  In these cases, the data may be stored uncompressed on
24 device.  The backing storage device must be thin-provisioned to realize any savings from
37 Storage from the backing storage device will be allocated, read, and written to in 4KB units for
38 best NVMe performance.  These 4KB units are called "backing IO units".  They are indexed from 0 to …
117 * Allocate 2 blocks (0 and 1) from the free backing IO unit list.  Always use the lowest numbered
121 * Allocate a chunk map (0) from the free chunk map list.
154 * Allocate 1 block (2) from the free backing IO unit list.
156 * Allocate a chunk map (1) from the free chunk map list.
193 * Allocate a 16KB buffer for the uncompressed data for this chunk.  Decompress the data from
198 * Allocate blocks 3 and 4 from the free backing IO unit list.
200 * Allocate chunk map 2 from the free chunk map list.
240 Unmap operations on an entire chunk are achieved by removing the chunk map entry (if any) from
247 may be removed from the logical map.
261 application restarts, it will reload compressed volumes so they can be used again from the
282 Backing storage must be thin provisioned to realize any savings from compression.  This algorithm