mirror of
https://github.com/versity/scoutfs.git
synced 2026-01-08 13:01:23 +00:00
54644a5074
Add the data_alloc_zone_blocks volume option. This changes the behaviour of the server to try and give mounts free data extents which fall in exclusive fixed-size zones. We add the field to the scoutfs_volume_options struct and add it to the set_volopt server handler which enforces constrains on the size of the zones. We then add fields to the log_trees struct which records the size of the zones and sets bits for the zones that contain free extents in the data_avail allocator root. The get_log_trees handler is changed to read all the zone bitmaps from all the items, pass those bitmaps in to _alloc_move to direct data allocations, and finally update the bitmaps in the log_trees items to cover the newly allocated extents. The log_trees data_alloc_zone fields are cleared as the mount's logs are reclaimed to indicate that the mount is no longer writing to the zone. The policy mechanism of finding free extents based on the bitmaps is ipmlemented down in _data_alloc_move(). Signed-off-by: Zach Brown <zab@versity.com>