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thin: add new ZERO/DISCARDS_UNSELECTED

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To more easily recognize unselected state from select '0' state
add new 'THIN_ZERO_UNSELECTED' enum.
Same applies to THIN_DISCARDS_UNSELECTED.

For those we no longer need to use PASS_ARG_ZERO or PASS_ARG_DISCARDS.
This commit is contained in:
Zdenek Kabelac 2017-03-03 20:46:13 +01:00
parent 8c72878cf2
commit b8cd0f4808
13 changed files with 67 additions and 32 deletions
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2
lib/metadata/lv.c
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@ -1279,7 +1279,7 @@ char *lv_attr_dup_with_info_and_seg_status(struct dm_pool *mem, const struct lv_
if (((lv_is_thin_volume(lv) && (seg = first_seg(lv)) && seg->pool_lv && (seg = first_seg(seg->pool_lv))) ||
(lv_is_thin_pool(lv) && (seg = first_seg(lv)))) &&
seg->zero_new_blocks)
(seg->zero_new_blocks == THIN_ZERO_YES))
repstr[7] = 'z';
else
repstr[7] = '-';

2
lib/metadata/lv_manip.c
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@ -7684,7 +7684,7 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg,
first_seg(lv)->max_recovery_rate = lp->max_recovery_rate;
} else if (lv_is_thin_pool(lv)) {
first_seg(lv)->chunk_size = lp->chunk_size;
first_seg(lv)->zero_new_blocks = lp->zero ? 1 : 0;
first_seg(lv)->zero_new_blocks = lp->zero_new_blocks;
first_seg(lv)->discards = lp->discards;
if (!recalculate_pool_chunk_size_with_dev_hints(lv, lp->passed_args,
lp->thin_chunk_size_calc_policy)) {

8
lib/metadata/merge.c
View File

@ -396,10 +396,14 @@ static void _check_lv_segment(struct logical_volume *lv, struct lv_segment *seg,
if (!validate_thin_pool_chunk_size(lv->vg->cmd, seg->chunk_size))
seg_error("has invalid chunk size.");
if (seg->zero_new_blocks != THIN_ZERO_YES &&
seg->zero_new_blocks != THIN_ZERO_NO)
seg_error("zero_new_blocks is invalid");
} else { /* !thin_pool */
if (seg->zero_new_blocks)
if (seg->zero_new_blocks != THIN_ZERO_UNSELECTED)
seg_error("sets zero_new_blocks");
if (seg->discards)
if (seg->discards != THIN_DISCARDS_UNSELECTED)
seg_error("sets discards");
if (!dm_list_empty(&seg->thin_messages))
seg_error("sets thin_messages list");

12
lib/metadata/metadata-exported.h
View File

@ -275,6 +275,13 @@ enum {
};
typedef enum {
THIN_ZERO_UNSELECTED = 0,
THIN_ZERO_NO,
THIN_ZERO_YES,
} thin_zero_t;
typedef enum {
THIN_DISCARDS_UNSELECTED = 0,
THIN_DISCARDS_IGNORE,
THIN_DISCARDS_NO_PASSDOWN,
THIN_DISCARDS_PASSDOWN,
@ -482,7 +489,7 @@ struct lv_segment {
struct lv_segment_area *meta_areas; /* For RAID */
struct logical_volume *metadata_lv; /* For thin_pool */
uint64_t transaction_id; /* For thin_pool, thin */
unsigned zero_new_blocks; /* For thin_pool */
thin_zero_t zero_new_blocks; /* For thin_pool */
thin_discards_t discards; /* For thin_pool */
struct dm_list thin_messages; /* For thin_pool */
struct logical_volume *external_lv; /* For thin */
@ -868,7 +875,7 @@ int update_thin_pool_params(const struct segment_type *segtype,
int passed_args, uint32_t pool_data_extents,
uint32_t *pool_metadata_extents,
int *chunk_size_calc_method, uint32_t *chunk_size,
thin_discards_t *discards, int *zero);
thin_discards_t *discards, thin_zero_t *zero_new_blocks);
const char *get_pool_discards_name(thin_discards_t discards);
int set_pool_discards(thin_discards_t *discards, const char *str);
struct logical_volume *alloc_pool_metadata(struct logical_volume *pool_lv,
@ -931,6 +938,7 @@ struct lvcreate_params {
int activation_skip; /* activation skip flags */
activation_change_t activate; /* non-snapshot, non-mirror */
thin_discards_t discards; /* thin */
thin_zero_t zero_new_blocks;
#define THIN_CHUNK_SIZE_CALC_METHOD_GENERIC 0x01
#define THIN_CHUNK_SIZE_CALC_METHOD_PERFORMANCE 0x02
int thin_chunk_size_calc_policy;

25
lib/metadata/thin_manip.c
View File

@ -604,7 +604,7 @@ int update_thin_pool_params(const struct segment_type *segtype,
uint32_t pool_data_extents,
uint32_t *pool_metadata_extents,
int *chunk_size_calc_method, uint32_t *chunk_size,
thin_discards_t *discards, int *zero)
thin_discards_t *discards, thin_zero_t *zero_new_blocks)
{
struct cmd_context *cmd = vg->cmd;
struct profile *profile = vg->profile;
@ -625,7 +625,9 @@ int update_thin_pool_params(const struct segment_type *segtype,
if (!validate_thin_pool_chunk_size(cmd, *chunk_size))
return_0;
if (!(passed_args & PASS_ARG_DISCARDS)) {
if (discards &&
(*discards == THIN_DISCARDS_UNSELECTED) &&
find_config_tree_node(cmd, allocation_thin_pool_discards_CFG, profile)) {
if (!(str = find_config_tree_str(cmd, allocation_thin_pool_discards_CFG, profile))) {
log_error(INTERNAL_ERROR "Could not find configuration.");
return 0;
@ -634,8 +636,11 @@ int update_thin_pool_params(const struct segment_type *segtype,
return_0;
}
if (!(passed_args & PASS_ARG_ZERO))
*zero = find_config_tree_bool(cmd, allocation_thin_pool_zero_CFG, profile);
if (zero_new_blocks &&
(*zero_new_blocks == THIN_ZERO_UNSELECTED) &&
find_config_tree_node(cmd, allocation_thin_pool_zero_CFG, profile))
*zero_new_blocks = find_config_tree_bool(cmd, allocation_thin_pool_zero_CFG, profile)
? THIN_ZERO_YES : THIN_ZERO_NO;
if (!(attr & THIN_FEATURE_BLOCK_SIZE) &&
!is_power_of_2(*chunk_size)) {
@ -705,6 +710,13 @@ int update_thin_pool_params(const struct segment_type *segtype,
extents_from_size(vg->cmd, pool_metadata_size, extent_size)))
return_0;
if (discards && (*discards == THIN_DISCARDS_UNSELECTED))
if (!set_pool_discards(discards, DEFAULT_THIN_POOL_DISCARDS))
return_0;
if (zero_new_blocks && (*zero_new_blocks == THIN_ZERO_UNSELECTED))
*zero_new_blocks = (DEFAULT_THIN_POOL_ZERO) ? THIN_ZERO_YES : THIN_ZERO_NO;
return 1;
}
@ -733,11 +745,10 @@ const char *get_pool_discards_name(thin_discards_t discards)
return "nopassdown";
case THIN_DISCARDS_IGNORE:
return "ignore";
}
default:
log_error(INTERNAL_ERROR "Unknown discards type encountered.");
return "unknown";
}
}
int lv_is_thin_origin(const struct logical_volume *lv, unsigned int *snap_count)

2
lib/report/properties.c
View File

@ -470,7 +470,7 @@ GET_LVSEG_NUM_PROPERTY_FN(chunk_size, (SECTOR_SIZE * lvseg_chunksize(lvseg)))
#define _chunk_size_set prop_not_implemented_set
GET_LVSEG_NUM_PROPERTY_FN(thin_count, dm_list_size(&lvseg->lv->segs_using_this_lv))
#define _thin_count_set prop_not_implemented_set
GET_LVSEG_NUM_PROPERTY_FN(zero, lvseg->zero_new_blocks)
GET_LVSEG_NUM_PROPERTY_FN(zero, (lvseg->zero_new_blocks == THIN_ZERO_YES))
#define _zero_set prop_not_implemented_set
GET_LVSEG_NUM_PROPERTY_FN(transaction_id, lvseg->transaction_id)
#define _transaction_id_set prop_not_implemented_set

2
lib/report/report.c
View File

@ -3654,7 +3654,7 @@ static int _thinzero_disp(struct dm_report *rh, struct dm_pool *mem,
seg = first_seg(seg->pool_lv);
if (seg_is_thin_pool(seg))
return _binary_disp(rh, mem, field, seg->zero_new_blocks, GET_FIRST_RESERVED_NAME(zero_y), private);
return _binary_disp(rh, mem, field, (seg->zero_new_blocks == THIN_ZERO_YES), GET_FIRST_RESERVED_NAME(zero_y), private);
return _binary_undef_disp(rh, mem, field, private);
}

16
lib/thin/thin.c
View File

@ -45,7 +45,7 @@ static void _thin_pool_display(const struct lv_segment *seg)
dm_list_size(&seg->lv->segs_using_this_lv));
log_print(" Transaction ID\t%" PRIu64, seg->transaction_id);
log_print(" Zero new blocks\t%s",
seg->zero_new_blocks ? "yes" : "no");
(seg->zero_new_blocks == THIN_ZERO_YES) ? "yes" : "no");
log_print(" ");
}
@ -84,6 +84,7 @@ static int _thin_pool_text_import(struct lv_segment *seg,
const char *lv_name;
struct logical_volume *pool_data_lv, *pool_metadata_lv;
const char *discards_str = NULL;
uint32_t zero = 0;
if (!dm_config_get_str(sn, "metadata", &lv_name))
return SEG_LOG_ERROR("Metadata must be a string in");
@ -124,9 +125,11 @@ static int _thin_pool_text_import(struct lv_segment *seg,
seg->device_id);
if (dm_config_has_node(sn, "zero_new_blocks") &&
!dm_config_get_uint32(sn, "zero_new_blocks", &seg->zero_new_blocks))
!dm_config_get_uint32(sn, "zero_new_blocks", &zero))
return SEG_LOG_ERROR("Could not read zero_new_blocks for");
seg->zero_new_blocks = (zero) ? THIN_ZERO_YES : THIN_ZERO_NO;
/* Read messages */
for (; sn; sn = sn->sib)
if (!(sn->v) && !_thin_pool_add_message(seg, sn->key, sn->child))
@ -165,8 +168,13 @@ static int _thin_pool_text_export(const struct lv_segment *seg, struct formatter
return 0;
}
if (seg->zero_new_blocks)
if (seg->zero_new_blocks == THIN_ZERO_YES)
outf(f, "zero_new_blocks = 1");
else if (seg->zero_new_blocks != THIN_ZERO_NO) {
log_error(INTERNAL_ERROR "Invalid zero new blocks value %d.",
seg->zero_new_blocks);
return 0;
}
dm_list_iterate_items(tmsg, &seg->thin_messages) {
/* Extra validation */
@ -304,7 +312,7 @@ static int _thin_pool_add_target_line(struct dev_manager *dm,
seg->transaction_id,
metadata_dlid, pool_dlid,
seg->chunk_size, low_water_mark,
seg->zero_new_blocks ? 0 : 1))
(seg->zero_new_blocks == THIN_ZERO_YES) ? 0 : 1))
return_0;
if (attr & THIN_FEATURE_DISCARDS) {

2
tools/lvchange.c
View File

@ -98,7 +98,7 @@ static int _lvchange_pool_update(struct cmd_context *cmd,
}
if (arg_is_set(cmd, zero_ARG)) {
val = arg_uint_value(cmd, zero_ARG, 1);
val = arg_uint_value(cmd, zero_ARG, 0) ? THIN_ZERO_YES : THIN_ZERO_NO;
if (val != first_seg(lv)->zero_new_blocks) {
first_seg(lv)->zero_new_blocks = val;
update++;

6
tools/lvconvert.c
View File

@ -3063,9 +3063,9 @@ static int _lvconvert_to_pool(struct cmd_context *cmd,
const char *discards_name;
if (arg_is_set(cmd, zero_ARG))
seg->zero_new_blocks = arg_int_value(cmd, zero_ARG, 0);
seg->zero_new_blocks = arg_int_value(cmd, zero_ARG, 0) ? THIN_ZERO_YES : THIN_ZERO_NO;
else
seg->zero_new_blocks = find_config_tree_bool(cmd, allocation_thin_pool_zero_CFG, vg->profile);
seg->zero_new_blocks = find_config_tree_bool(cmd, allocation_thin_pool_zero_CFG, vg->profile) ? THIN_ZERO_YES : THIN_ZERO_NO;
if (arg_is_set(cmd, discards_ARG))
seg->discards = (thin_discards_t) arg_uint_value(cmd, discards_ARG, THIN_DISCARDS_PASSDOWN);
@ -3097,7 +3097,7 @@ static int _lvconvert_to_pool(struct cmd_context *cmd,
if (!vg_write(vg) || !vg_commit(vg))
return_0;
if (seg->zero_new_blocks &&
if ((seg->zero_new_blocks == THIN_ZERO_YES) &&
seg->chunk_size >= DEFAULT_THIN_POOL_CHUNK_SIZE_PERFORMANCE * 2)
log_warn("WARNING: Pool zeroing and large %s chunk size slows down provisioning.",
display_size(cmd, seg->chunk_size));

2
tools/lvcreate.c
View File

@ -1079,7 +1079,7 @@ static int _lvcreate_params(struct cmd_context *cmd,
(lp->create_pool &&
!get_pool_params(cmd, lp->segtype, &lp->passed_args,
&lp->pool_metadata_size, &lp->pool_metadata_spare,
&lp->chunk_size, &lp->discards, &lp->zero)) ||
&lp->chunk_size, &lp->discards, &lp->zero_new_blocks)) ||
!_read_cache_params(cmd, lp) ||
!_read_mirror_and_raid_params(cmd, lp))
return_0;

16
tools/toollib.c
View File

@ -1,6 +1,6 @@
/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2015 Red Hat, Inc. All rights reserved.
* Copyright (C) 2004-2017 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
@ -1199,22 +1199,26 @@ int get_pool_params(struct cmd_context *cmd,
int *pool_metadata_spare,
uint32_t *chunk_size,
thin_discards_t *discards,
int *zero)
thin_zero_t *zero_new_blocks)
{
*passed_args = 0;
if (segtype_is_thin_pool(segtype) || segtype_is_thin(segtype)) {
if (arg_is_set(cmd, zero_ARG)) {
*passed_args |= PASS_ARG_ZERO;
*zero = arg_int_value(cmd, zero_ARG, 1);
log_very_verbose("%s pool zeroing.", *zero ? "Enabling" : "Disabling");
}
*zero_new_blocks = arg_int_value(cmd, zero_ARG, 0) ? THIN_ZERO_YES : THIN_ZERO_NO;
log_very_verbose("%s pool zeroing.",
(*zero_new_blocks == THIN_ZERO_YES) ? "Enabling" : "Disabling");
} else
*zero_new_blocks = THIN_ZERO_UNSELECTED;
if (arg_is_set(cmd, discards_ARG)) {
*passed_args |= PASS_ARG_DISCARDS;
*discards = (thin_discards_t) arg_uint_value(cmd, discards_ARG, 0);
log_very_verbose("Setting pool discards to %s.",
get_pool_discards_name(*discards));
}
} else
*discards = THIN_DISCARDS_UNSELECTED;
}
if (arg_from_list_is_negative(cmd, "may not be negative",

2
tools/toollib.h
View File

@ -214,7 +214,7 @@ int get_pool_params(struct cmd_context *cmd,
int *pool_metadata_spare,
uint32_t *chunk_size,
thin_discards_t *discards,
int *zero);
thin_zero_t *zero_new_blocks);
int get_stripe_params(struct cmd_context *cmd, const struct segment_type *segtype,
uint32_t *stripes, uint32_t *stripe_size,