Mike Snitzer 7d48935eff dm thin: allow metadata space larger than supported to go unused ... It was always intended that a user could provide a thin metadata device that is larger than the max supported by the on-disk format. The extra space would just go unused. Unfortunately that never worked. If the user attempted to use a larger metadata device on creation they would get an error like the following: device-mapper: space map common: space map too large device-mapper: transaction manager: couldn't create metadata space map device-mapper: thin metadata: tm_create_with_sm failed device-mapper: table: 252:17: thin-pool: Error creating metadata object device-mapper: ioctl: error adding target to table Fix this by allowing the initial metadata space map creation to cap its size at the max number of blocks supported (DM_SM_METADATA_MAX_BLOCKS). get_metadata_dev_size() must also impose DM_SM_METADATA_MAX_BLOCKS (via THIN_METADATA_MAX_SECTORS), otherwise extending metadata would cap at THIN_METADATA_MAX_SECTORS_WARNING (which is larger than supported). Also, the calculation for THIN_METADATA_MAX_SECTORS didn't account for the sizeof the disk_bitmap_header. So the supported maximum metadata size is a bit smaller (reduced from 33423360 to 33292800 sectors). Lastly, remove the "excess space will not be used" warning message from get_metadata_dev_size(); it resulted in printing the warning multiple times. Factor out warn_if_metadata_device_too_big(), call it from pool_ctr() and maybe_resize_metadata_dev(). Signed-off-by: Mike Snitzer <snitzer@redhat.com> Acked-by: Joe Thornber <ejt@redhat.com>		2014-02-27 11:49:08 -05:00
..
dm-array.c	dm array: fix a reference counting bug in shadow_ablock	2013-12-13 14:22:10 -05:00
dm-array.h	dm persistent data: add transactional array	2013-03-01 22:45:51 +00:00
dm-bitset.c	dm persistent data: add bitset	2013-03-01 22:45:51 +00:00
dm-bitset.h	dm persistent data: add bitset	2013-03-01 22:45:51 +00:00
dm-block-manager.c	dm persistent data: cleanup dm-thin specific references in text	2014-01-07 10:11:54 -05:00
dm-block-manager.h	dm thin: allow pool in read-only mode to transition to read-write mode	2013-12-10 16:35:13 -05:00
dm-btree-internal.h	dm persistent data: add btree_walk	2013-03-01 22:45:50 +00:00
dm-btree-remove.c	dm thin: fix discard corruption	2013-03-20 17:21:24 +00:00
dm-btree-spine.c	dm persistent data: add btree_walk	2013-03-01 22:45:50 +00:00
dm-btree.c	dm btree: add dm_btree_find_lowest_key	2014-01-09 16:29:17 -05:00
dm-btree.h	dm btree: add dm_btree_find_lowest_key	2014-01-09 16:29:17 -05:00
dm-persistent-data-internal.h
dm-space-map-common.c	dm space map common: make sure new space is used during extend	2014-01-07 21:05:17 -05:00
dm-space-map-common.h	dm persistent data: only commit space map if index changed	2012-07-27 15:08:06 +01:00
dm-space-map-disk.c	dm space map disk: optimise sm_disk_dec_block	2013-11-09 18:20:24 -05:00
dm-space-map-disk.h
dm-space-map-metadata.c	dm thin: allow metadata space larger than supported to go unused	2014-02-27 11:49:08 -05:00
dm-space-map-metadata.h	dm thin: allow metadata space larger than supported to go unused	2014-02-27 11:49:08 -05:00
dm-space-map.h	dm persistent data: add threshold callback to space map	2013-05-10 14:37:20 +01:00
dm-transaction-manager.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
dm-transaction-manager.h	dm persistent data: tidy transaction manager creation fns	2012-07-27 15:08:09 +01:00
Kconfig	dm persistent data: remove CONFIG_EXPERIMENTAL	2013-03-01 22:45:46 +00:00
Makefile	dm persistent data: add bitset	2013-03-01 22:45:51 +00:00