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libdm: move thin max size to header

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Move max size of thin metadata into define.
Increase a bit the size to match the kernel size.
(16978542592->17112760320)
This commit is contained in:
Zdenek Kabelac 2013-05-22 15:02:55 +02:00
parent 9ac0f58ea1
commit 861fd1108f
2 changed files with 11 additions and 11 deletions
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7
libdm/libdevmapper.h
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@ -749,6 +749,13 @@ int dm_tree_node_add_replicator_dev_target(struct dm_tree_node *node,
*/
#define DM_THIN_MIN_DATA_BLOCK_SIZE (UINT32_C(128))
#define DM_THIN_MAX_DATA_BLOCK_SIZE (UINT32_C(2097152))
/*
* Max supported size for thin pool metadata device (17112760320 bytes)
* Limitation is hardcoded into the kernel and bigger device size
* is not accepted.
* drivers/md/dm-thin-metadata.h THIN_METADATA_MAX_SECTORS
*/
#define DM_THIN_MAX_METADATA_SIZE (UINT64_C(255) * (1 << 14) * (4096 / (1 << 9)) - 256 * 1024)
int dm_tree_node_add_thin_pool_target(struct dm_tree_node *node,
uint64_t size,

15
libdm/libdm-deptree.c
View File

@ -3232,13 +3232,6 @@ int dm_tree_node_add_thin_pool_target(struct dm_tree_node *node,
{
struct load_segment *seg, *mseg;
uint64_t devsize = 0;
/*
* Max supported size for thin pool metadata device
* Limitation is hardcoded into kernel and bigger
* device size is not accepted. (16978542592)
*/
const uint64_t max_metadata_size =
255ULL * (1 << 14) * (4096 / (1 << 9)) - 256 * 1024;
if (data_block_size < DM_THIN_MIN_DATA_BLOCK_SIZE) {
log_error("Data block size %u is lower then %u sectors.",
@ -3266,11 +3259,11 @@ int dm_tree_node_add_thin_pool_target(struct dm_tree_node *node,
/* FIXME: more complex target may need more tweaks */
dm_list_iterate_items(mseg, &seg->metadata->props.segs) {
devsize += mseg->size;
if (devsize > max_metadata_size) {
if (devsize > DM_THIN_MAX_METADATA_SIZE) {
log_debug_activation("Ignoring %" PRIu64 " of device.",
devsize - max_metadata_size);
mseg->size -= (devsize - max_metadata_size);
devsize = max_metadata_size;
devsize - DM_THIN_MAX_METADATA_SIZE);
mseg->size -= (devsize - DM_THIN_MAX_METADATA_SIZE);
devsize = DM_THIN_MAX_METADATA_SIZE;
/* FIXME: drop remaining segs */
}
}