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thin: move update_pool_params

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Now we may recongnize preset arguments, move
the code for updating thin pool related values
into /lib portion of the code.
This commit is contained in:
Zdenek Kabelac 2013-03-11 12:37:09 +01:00
parent f06dd8725a
commit b36a776a7f
5 changed files with 94 additions and 91 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.99 -
===================================
Move update_pool_params() from /tools to /lib for better reuse.
Give precedence to EMC power2 devices with duplicate PVIDs.
Add --validate option to lvm dumpconfig to validate current config on demand.
Add --ignoreadvanced and --ignoreunsupported switch to lvm dumpconfig.

4
lib/metadata/metadata-exported.h
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@ -576,6 +576,10 @@ uint64_t extents_from_size(struct cmd_context *cmd, uint64_t size,
int pool_is_active(const struct logical_volume *pool_lv);
int update_pool_lv(struct logical_volume *lv, int activate);
int update_pool_params(struct cmd_context *cmd, unsigned attr, int passed_args,
uint32_t data_extents, uint32_t extent_size,
uint32_t *chunk_size, thin_discards_t *discards,
uint64_t *pool_metadata_size);
int get_pool_discards(const char *str, thin_discards_t *discards);
const char *get_pool_discards_name(thin_discards_t discards);

88
lib/metadata/thin_manip.c
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@ -20,6 +20,7 @@
#include "lv_alloc.h"
#include "archiver.h"
#include "defaults.h"
#include "display.h"
int attach_pool_metadata_lv(struct lv_segment *pool_seg, struct logical_volume *metadata_lv)
{
@ -523,6 +524,93 @@ int update_pool_lv(struct logical_volume *lv, int activate)
return 1;
}
int update_pool_params(struct cmd_context *cmd, unsigned attr, int passed_args,
uint32_t data_extents, uint32_t extent_size,
uint32_t *chunk_size, thin_discards_t *discards,
uint64_t *pool_metadata_size)
{
size_t estimate_chunk_size;
if (!(attr & THIN_FEATURE_BLOCK_SIZE) &&
(*chunk_size & (*chunk_size - 1))) {
log_error("Chunk size must be a power of 2 for this thin target version.");
return 0;
} else if (*chunk_size & (DM_THIN_MIN_DATA_BLOCK_SIZE - 1)) {
log_error("Chunk size must be multiple of %s.",
display_size(cmd, DM_THIN_MIN_DATA_BLOCK_SIZE));
return 0;
}
if (!*pool_metadata_size) {
/* Defaults to nr_pool_blocks * 64b converted to size in sectors */
*pool_metadata_size = (uint64_t) data_extents * extent_size /
(*chunk_size * (SECTOR_SIZE / UINT64_C(64)));
/* Check if we could eventually use bigger chunk size */
if (!(passed_args & PASS_ARG_CHUNK_SIZE)) {
while ((*pool_metadata_size >
(DEFAULT_THIN_POOL_OPTIMAL_SIZE / SECTOR_SIZE)) &&
(*chunk_size < DM_THIN_MAX_DATA_BLOCK_SIZE)) {
*chunk_size <<= 1;
*pool_metadata_size >>= 1;
}
log_verbose("Setting chunk size to %s.",
display_size(cmd, *chunk_size));
} else if (*pool_metadata_size > (2 * DEFAULT_THIN_POOL_MAX_METADATA_SIZE)) {
/* Suggest bigger chunk size */
estimate_chunk_size = (uint64_t) data_extents * extent_size /
(2 * DEFAULT_THIN_POOL_MAX_METADATA_SIZE *
(SECTOR_SIZE / UINT64_C(64)));
log_warn("WARNING: Chunk size is too small for pool, suggested minimum is %s.",
display_size(cmd, UINT64_C(1) << (ffs(estimate_chunk_size) + 1)));
}
/* Round up to extent size */
if (*pool_metadata_size % extent_size)
*pool_metadata_size += extent_size - *pool_metadata_size % extent_size;
} else {
estimate_chunk_size = (uint64_t) data_extents * extent_size /
(*pool_metadata_size * (SECTOR_SIZE / UINT64_C(64)));
/* Check to eventually use bigger chunk size */
if (!(passed_args & PASS_ARG_CHUNK_SIZE)) {
*chunk_size = estimate_chunk_size;
if (*chunk_size < DM_THIN_MIN_DATA_BLOCK_SIZE)
*chunk_size = DM_THIN_MIN_DATA_BLOCK_SIZE;
else if (*chunk_size > DM_THIN_MAX_DATA_BLOCK_SIZE)
*chunk_size = DM_THIN_MAX_DATA_BLOCK_SIZE;
log_verbose("Setting chunk size %s.",
display_size(cmd, *chunk_size));
} else if (*chunk_size < estimate_chunk_size) {
/* Suggest bigger chunk size */
log_warn("WARNING: Chunk size is smaller then suggested minimum size %s.",
display_size(cmd, estimate_chunk_size));
}
}
if ((uint64_t) *chunk_size > (uint64_t) data_extents * extent_size) {
log_error("Chunk size is bigger then pool data size.");
return 0;
}
if (*pool_metadata_size > (2 * DEFAULT_THIN_POOL_MAX_METADATA_SIZE)) {
if (passed_args & PASS_ARG_POOL_METADATA_SIZE)
log_warn("WARNING: Maximum supported pool metadata size is %s.",
display_size(cmd, 2 * DEFAULT_THIN_POOL_MAX_METADATA_SIZE));
*pool_metadata_size = 2 * DEFAULT_THIN_POOL_MAX_METADATA_SIZE;
} else if (*pool_metadata_size < (2 * DEFAULT_THIN_POOL_MIN_METADATA_SIZE)) {
if (passed_args & PASS_ARG_POOL_METADATA_SIZE)
log_warn("WARNING: Minimum supported pool metadata size is %s.",
display_size(cmd, 2 * DEFAULT_THIN_POOL_MIN_METADATA_SIZE));
*pool_metadata_size = 2 * DEFAULT_THIN_POOL_MIN_METADATA_SIZE;
}
log_verbose("Setting pool metadata size to %s.",
display_size(cmd, *pool_metadata_size));
return 1;
}
int get_pool_discards(const char *str, thin_discards_t *discards)
{
if (!strcasecmp(str, "passdown"))

87
tools/toollib.c
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@ -1583,93 +1583,6 @@ int get_pool_params(struct cmd_context *cmd, int *passed_args,
return 1;
}
int update_pool_params(struct cmd_context *cmd, unsigned attr, int passed_args,
uint32_t data_extents, uint32_t extent_size,
uint32_t *chunk_size, thin_discards_t *discards,
uint64_t *pool_metadata_size)
{
size_t estimate_chunk_size;
if (!(attr & THIN_FEATURE_BLOCK_SIZE) &&
(*chunk_size & (*chunk_size - 1))) {
log_error("Chunk size must be a power of 2 for this thin target version.");
return 0;
} else if (*chunk_size & (DM_THIN_MIN_DATA_BLOCK_SIZE - 1)) {
log_error("Chunk size must be multiple of %s.",
display_size(cmd, DM_THIN_MIN_DATA_BLOCK_SIZE));
return 0;
}
if (!*pool_metadata_size) {
/* Defaults to nr_pool_blocks * 64b converted to size in sectors */
*pool_metadata_size = (uint64_t) data_extents * extent_size /
(*chunk_size * (SECTOR_SIZE / UINT64_C(64)));
/* Check if we could eventually use bigger chunk size */
if (!arg_count(cmd, chunksize_ARG)) {
while ((*pool_metadata_size >
(DEFAULT_THIN_POOL_OPTIMAL_SIZE / SECTOR_SIZE)) &&
(*chunk_size < DM_THIN_MAX_DATA_BLOCK_SIZE)) {
*chunk_size <<= 1;
*pool_metadata_size >>= 1;
}
log_verbose("Setting chunk size to %s.",
display_size(cmd, *chunk_size));
} else if (*pool_metadata_size > (2 * DEFAULT_THIN_POOL_MAX_METADATA_SIZE)) {
/* Suggest bigger chunk size */
estimate_chunk_size = (uint64_t) data_extents * extent_size /
(2 * DEFAULT_THIN_POOL_MAX_METADATA_SIZE *
(SECTOR_SIZE / UINT64_C(64)));
log_warn("WARNING: Chunk size is too small for pool, suggested minimum is %s.",
display_size(cmd, UINT64_C(1) << (ffs(estimate_chunk_size) + 1)));
}
/* Round up to extent size */
if (*pool_metadata_size % extent_size)
*pool_metadata_size += extent_size - *pool_metadata_size % extent_size;
} else {
estimate_chunk_size = (uint64_t) data_extents * extent_size /
(*pool_metadata_size * (SECTOR_SIZE / UINT64_C(64)));
/* Check to eventually use bigger chunk size */
if (!arg_count(cmd, chunksize_ARG)) {
*chunk_size = estimate_chunk_size;
if (*chunk_size < DM_THIN_MIN_DATA_BLOCK_SIZE)
*chunk_size = DM_THIN_MIN_DATA_BLOCK_SIZE;
else if (*chunk_size > DM_THIN_MAX_DATA_BLOCK_SIZE)
*chunk_size = DM_THIN_MAX_DATA_BLOCK_SIZE;
log_verbose("Setting chunk size %s.",
display_size(cmd, *chunk_size));
} else if (*chunk_size < estimate_chunk_size) {
/* Suggest bigger chunk size */
log_warn("WARNING: Chunk size is smaller then suggested minimum size %s.",
display_size(cmd, estimate_chunk_size));
}
}
if ((uint64_t) *chunk_size > (uint64_t) data_extents * extent_size) {
log_error("Chunk size is bigger then pool data size.");
return 0;
}
if (*pool_metadata_size > (2 * DEFAULT_THIN_POOL_MAX_METADATA_SIZE)) {
if (arg_count(cmd, poolmetadatasize_ARG))
log_warn("WARNING: Maximum supported pool metadata size is %s.",
display_size(cmd, 2 * DEFAULT_THIN_POOL_MAX_METADATA_SIZE));
*pool_metadata_size = 2 * DEFAULT_THIN_POOL_MAX_METADATA_SIZE;
} else if (*pool_metadata_size < (2 * DEFAULT_THIN_POOL_MIN_METADATA_SIZE)) {
if (arg_count(cmd, poolmetadatasize_ARG))
log_warn("WARNING: Minimum supported pool metadata size is %s.",
display_size(cmd, 2 * DEFAULT_THIN_POOL_MIN_METADATA_SIZE));
*pool_metadata_size = 2 * DEFAULT_THIN_POOL_MIN_METADATA_SIZE;
}
log_verbose("Setting pool metadata size to %s.",
display_size(cmd, *pool_metadata_size));
return 1;
}
struct logical_volume *alloc_pool_metadata(struct logical_volume *pool_lv,
alloc_policy_t alloc,
const char *name,

5
tools/toollib.h
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@ -117,10 +117,7 @@ int get_pool_params(struct cmd_context *cmd, int *passed_args,
thin_discards_t *discards,
uint64_t *pool_metadata_size,
int *zero);
int update_pool_params(struct cmd_context *cmd, unsigned attr, int passed_args,
uint32_t data_extents, uint32_t extent_size,
uint32_t *chunk_size, thin_discards_t *discards,
uint64_t *pool_metadata_size);
struct logical_volume *alloc_pool_metadata(struct logical_volume *pool_lv,
alloc_policy_t alloc, const char *name,
struct dm_list *pvh, uint32_t read_ahead,