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Introduce percent_range_t and centralise snapshot full/mirror in-sync checks.

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This commit is contained in:
Alasdair Kergon 2009-10-01 00:35:29 +00:00
parent db8eab04e3
commit 2ccdb165e3
14 changed files with 154 additions and 62 deletions
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1
WHATS_NEW
View File

@ -1,5 +1,6 @@
Version 2.02.54 -
=====================================
Introduce percent_range_t and centralise snapshot full/mirror in-sync checks.
Factor out poll_mirror_progress and introduce progress_t.
Distinguish between powers of 1000 and powers of 1024 in unit suffixes.
Restart lvconverts in vgchange by sharing lv_spawn_background_polling.

17
lib/activate/activate.c
View File

@ -156,12 +156,14 @@ int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s,
{
return 0;
}
int lv_snapshot_percent(const struct logical_volume *lv, float *percent)
int lv_snapshot_percent(const struct logical_volume *lv, float *percent,
percent_range_t *percent_range)
{
return 0;
}
int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv,
int wait, float *percent, uint32_t *event_nr)
int wait, float *percent, percent_range_t *percent_range,
uint32_t *event_nr)
{
return 0;
}
@ -495,7 +497,8 @@ int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s,
/*
* Returns 1 if percent set, else 0 on failure.
*/
int lv_snapshot_percent(const struct logical_volume *lv, float *percent)
int lv_snapshot_percent(const struct logical_volume *lv, float *percent,
percent_range_t *percent_range)
{
int r;
struct dev_manager *dm;
@ -506,7 +509,7 @@ int lv_snapshot_percent(const struct logical_volume *lv, float *percent)
if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name)))
return_0;
if (!(r = dev_manager_snapshot_percent(dm, lv, percent)))
if (!(r = dev_manager_snapshot_percent(dm, lv, percent, percent_range)))
stack;
dev_manager_destroy(dm);
@ -516,7 +519,8 @@ int lv_snapshot_percent(const struct logical_volume *lv, float *percent)
/* FIXME Merge with snapshot_percent */
int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv,
int wait, float *percent, uint32_t *event_nr)
int wait, float *percent, percent_range_t *percent_range,
uint32_t *event_nr)
{
int r;
struct dev_manager *dm;
@ -541,7 +545,8 @@ int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv,
if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name)))
return_0;
if (!(r = dev_manager_mirror_percent(dm, lv, wait, percent, event_nr)))
if (!(r = dev_manager_mirror_percent(dm, lv, wait, percent,
percent_range, event_nr)))
stack;
dev_manager_destroy(dm);

6
lib/activate/activate.h
View File

@ -81,9 +81,11 @@ int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s,
/*
* Returns 1 if percent has been set, else 0.
*/
int lv_snapshot_percent(const struct logical_volume *lv, float *percent);
int lv_snapshot_percent(const struct logical_volume *lv, float *percent,
percent_range_t *percent_range);
int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv,
int wait, float *percent, uint32_t *event_nr);
int wait, float *percent, percent_range_t *percent_range,
uint32_t *event_nr);
/*
* Return number of LVs in the VG that are active.

56
lib/activate/dev_manager.c
View File

@ -327,10 +327,26 @@ static int _status(const char *name, const char *uuid,
return 0;
}
static percent_range_t _combine_percent_ranges(percent_range_t a,
percent_range_t b)
{
if (a == PERCENT_INVALID || b == PERCENT_INVALID)
return PERCENT_INVALID;
if (a == PERCENT_100 && b == PERCENT_100)
return PERCENT_100;
if (a == PERCENT_0 && b == PERCENT_0)
return PERCENT_0;
return PERCENT_0_TO_100;
}
static int _percent_run(struct dev_manager *dm, const char *name,
const char *dlid,
const char *target_type, int wait,
struct logical_volume *lv, float *percent,
percent_range_t *overall_percent_range,
uint32_t *event_nr)
{
int r = 0;
@ -343,10 +359,13 @@ static int _percent_run(struct dev_manager *dm, const char *name,
struct dm_list *segh = &lv->segments;
struct lv_segment *seg = NULL;
struct segment_type *segtype;
percent_range_t percent_range, combined_percent_range;
int first_time = 1;
uint64_t total_numerator = 0, total_denominator = 0;
*percent = -1;
*overall_percent_range = PERCENT_INVALID;
if (!(dmt = _setup_task(name, dlid, event_nr,
wait ? DM_DEVICE_WAITEVENT : DM_DEVICE_STATUS, 0, 0)))
@ -383,12 +402,20 @@ static int _percent_run(struct dev_manager *dm, const char *name,
continue;
if (segtype->ops->target_percent &&
!segtype->ops->target_percent(&dm->target_state, dm->mem,
!segtype->ops->target_percent(&dm->target_state,
&percent_range, dm->mem,
dm->cmd, seg, params,
&total_numerator,
&total_denominator))
goto_out;
if (first_time) {
combined_percent_range = percent_range;
first_time = 0;
} else
combined_percent_range =
_combine_percent_ranges(combined_percent_range,
percent_range);
} while (next);
if (lv && (segh = dm_list_next(&lv->segments, segh))) {
@ -397,10 +424,16 @@ static int _percent_run(struct dev_manager *dm, const char *name,
goto out;
}
if (total_denominator)
if (total_denominator) {
*percent = (float) total_numerator *100 / total_denominator;
else
*overall_percent_range = combined_percent_range;
} else {
*percent = 100;
if (first_time)
*overall_percent_range = PERCENT_100;
else
*overall_percent_range = combined_percent_range;
}
log_debug("LV percent: %f", *percent);
r = 1;
@ -413,20 +446,20 @@ static int _percent_run(struct dev_manager *dm, const char *name,
static int _percent(struct dev_manager *dm, const char *name, const char *dlid,
const char *target_type, int wait,
struct logical_volume *lv, float *percent,
uint32_t *event_nr)
percent_range_t *overall_percent_range, uint32_t *event_nr)
{
if (dlid && *dlid) {
if (_percent_run(dm, NULL, dlid, target_type, wait, lv, percent,
event_nr))
overall_percent_range, event_nr))
return 1;
else if (_percent_run(dm, NULL, dlid + sizeof(UUID_PREFIX) - 1,
target_type, wait, lv, percent,
event_nr))
overall_percent_range, event_nr))
return 1;
}
if (name && _percent_run(dm, name, NULL, target_type, wait, lv, percent,
event_nr))
overall_percent_range, event_nr))
return 1;
return 0;
@ -481,7 +514,7 @@ void dev_manager_exit(void)
int dev_manager_snapshot_percent(struct dev_manager *dm,
const struct logical_volume *lv,
float *percent)
float *percent, percent_range_t *percent_range)
{
char *name;
const char *dlid;
@ -500,7 +533,7 @@ int dev_manager_snapshot_percent(struct dev_manager *dm,
*/
log_debug("Getting device status percentage for %s", name);
if (!(_percent(dm, name, dlid, "snapshot", 0, NULL, percent,
NULL)))
percent_range, NULL)))
return_0;
/* FIXME dm_pool_free ? */
@ -513,7 +546,8 @@ int dev_manager_snapshot_percent(struct dev_manager *dm,
/* FIXME Cope with more than one target */
int dev_manager_mirror_percent(struct dev_manager *dm,
struct logical_volume *lv, int wait,
float *percent, uint32_t *event_nr)
float *percent, percent_range_t *percent_range,
uint32_t *event_nr)
{
char *name;
const char *dlid;
@ -533,7 +567,7 @@ int dev_manager_mirror_percent(struct dev_manager *dm,
log_debug("Getting device mirror status percentage for %s", name);
if (!(_percent(dm, name, dlid, "mirror", wait, lv, percent,
event_nr)))
percent_range, event_nr)))
return_0;
return 1;

8
lib/activate/dev_manager.h
View File

@ -16,6 +16,8 @@
#ifndef _LVM_DEV_MANAGER_H
#define _LVM_DEV_MANAGER_H
#include "metadata-exported.h"
struct logical_volume;
struct volume_group;
struct cmd_context;
@ -44,10 +46,12 @@ int dev_manager_info(struct dm_pool *mem, const char *name,
struct dm_info *info, uint32_t *read_ahead);
int dev_manager_snapshot_percent(struct dev_manager *dm,
const struct logical_volume *lv,
float *percent);
float *percent,
percent_range_t *percent_range);
int dev_manager_mirror_percent(struct dev_manager *dm,
struct logical_volume *lv, int wait,
float *percent, uint32_t *event_nr);
float *percent, percent_range_t *percent_range,
uint32_t *event_nr);
int dev_manager_suspend(struct dev_manager *dm, struct logical_volume *lv,
int lockfs, int flush_required);
int dev_manager_activate(struct dev_manager *dm, struct logical_volume *lv);

15
lib/display/display.c
View File

@ -482,6 +482,7 @@ int lvdisplay_full(struct cmd_context *cmd,
char uuid[64] __attribute((aligned(8)));
struct lv_segment *snap_seg = NULL;
float snap_percent; /* fused, fsize; */
percent_range_t percent_range;
if (!id_write_format(&lv->lvid.id[1], uuid, sizeof(uuid)))
return_0;
@ -506,24 +507,26 @@ int lvdisplay_full(struct cmd_context *cmd,
origin_list) {
if (inkernel &&
(snap_active = lv_snapshot_percent(snap_seg->cow,
&snap_percent)))
if (snap_percent < 0 || snap_percent >= 100)
&snap_percent,
&percent_range)))
if (percent_range == PERCENT_INVALID)
snap_active = 0;
log_print(" %s%s/%s [%s]",
lv->vg->cmd->dev_dir, lv->vg->name,
snap_seg->cow->name,
(snap_active > 0) ? "active" : "INACTIVE");
snap_active ? "active" : "INACTIVE");
}
snap_seg = NULL;
} else if ((snap_seg = find_cow(lv))) {
if (inkernel &&
(snap_active = lv_snapshot_percent(snap_seg->cow,
&snap_percent)))
if (snap_percent < 0 || snap_percent >= 100)
&snap_percent,
&percent_range)))
if (percent_range == PERCENT_INVALID)
snap_active = 0;
log_print("LV snapshot status %s destination for %s%s/%s",
(snap_active > 0) ? "active" : "INACTIVE",
snap_active ? "active" : "INACTIVE",
lv->vg->cmd->dev_dir, lv->vg->name,
snap_seg->origin->name);
}

7
lib/metadata/metadata-exported.h
View File

@ -136,6 +136,13 @@ typedef enum {
DONT_PROMPT_OVERRIDE = 2 /* Skip prompt + override a second condition */
} force_t;
typedef enum {
PERCENT_0 = 0,
PERCENT_0_TO_100 = 1,
PERCENT_100 = 2,
PERCENT_INVALID = 3
} percent_range_t;
struct cmd_context;
struct format_handler;
struct labeller;

21
lib/metadata/mirror.c
View File

@ -701,17 +701,16 @@ int remove_mirror_images(struct logical_volume *lv, uint32_t num_mirrors,
static int _mirrored_lv_in_sync(struct logical_volume *lv)
{
float sync_percent;
percent_range_t percent_range;
if (!lv_mirror_percent(lv->vg->cmd, lv, 0, &sync_percent, NULL)) {
if (!lv_mirror_percent(lv->vg->cmd, lv, 0, &sync_percent,
&percent_range, NULL)) {
log_error("Unable to determine mirror sync status of %s/%s.",
lv->vg->name, lv->name);
return 0;
}
if (sync_percent >= 100.0)
return 1;
return 0;
return (percent_range == PERCENT_100) ? 1 : 0;
}
/*
@ -1203,6 +1202,7 @@ int remove_mirror_log(struct cmd_context *cmd,
struct dm_list *removable_pvs)
{
float sync_percent;
percent_range_t percent_range = PERCENT_0;
struct lvinfo info;
struct volume_group *vg = lv->vg;
@ -1214,7 +1214,8 @@ int remove_mirror_log(struct cmd_context *cmd,
/* Had disk log, switch to core. */
if (lv_info(cmd, lv, &info, 0, 0) && info.exists) {
if (!lv_mirror_percent(cmd, lv, 0, &sync_percent, NULL)) {
if (!lv_mirror_percent(cmd, lv, 0, &sync_percent,
&percent_range, NULL)) {
log_error("Unable to determine mirror sync status.");
return 0;
}
@ -1229,7 +1230,7 @@ int remove_mirror_log(struct cmd_context *cmd,
else
return 0;
if (sync_percent >= 100.0)
if (percent_range == PERCENT_100)
init_mirror_in_sync(1);
else {
/* A full resync will take place */
@ -1353,6 +1354,7 @@ int add_mirror_log(struct cmd_context *cmd, struct logical_volume *lv,
const struct segment_type *segtype;
struct dm_list *parallel_areas;
float sync_percent;
percent_range_t percent_range;
int in_sync;
struct logical_volume *log_lv;
struct lvinfo info;
@ -1404,8 +1406,9 @@ int add_mirror_log(struct cmd_context *cmd, struct logical_volume *lv,
}
/* check sync status */
if (lv_mirror_percent(cmd, lv, 0, &sync_percent, NULL) &&
sync_percent >= 100.0)
if (lv_mirror_percent(cmd, lv, 0, &sync_percent, &percent_range,
NULL) &&
(percent_range == PERCENT_100))
in_sync = 1;
else
in_sync = 0;

6
lib/metadata/segtype.h
View File

@ -16,6 +16,8 @@
#ifndef _SEGTYPES_H
#define _SEGTYPES_H
#include "metadata-exported.h"
struct segtype_handler;
struct cmd_context;
struct config_tree;
@ -73,7 +75,9 @@ struct segtype_handler {
struct lv_segment *seg,
struct dm_tree_node *node, uint64_t len,
uint32_t *pvmove_mirror_count);
int (*target_percent) (void **target_state, struct dm_pool * mem,
int (*target_percent) (void **target_state,
percent_range_t *percent_range,
struct dm_pool * mem,
struct cmd_context *cmd,
struct lv_segment *seg, char *params,
uint64_t *total_numerator,

18
lib/mirror/mirrored.c
View File

@ -178,10 +178,13 @@ static struct mirror_state *_mirrored_init_target(struct dm_pool *mem,
return mirr_state;
}
static int _mirrored_target_percent(void **target_state, struct dm_pool *mem,
struct cmd_context *cmd, struct lv_segment *seg,
char *params, uint64_t *total_numerator,
uint64_t *total_denominator)
static int _mirrored_target_percent(void **target_state,
percent_range_t *percent_range,
struct dm_pool *mem,
struct cmd_context *cmd,
struct lv_segment *seg, char *params,
uint64_t *total_numerator,
uint64_t *total_denominator)
{
struct mirror_state *mirr_state;
uint64_t numerator, denominator;
@ -226,6 +229,13 @@ static int _mirrored_target_percent(void **target_state, struct dm_pool *mem,
if (seg)
seg->extents_copied = seg->area_len * numerator / denominator;
if (numerator == denominator)
*percent_range = PERCENT_100;
else if (numerator == 0)
*percent_range = PERCENT_0;
else
*percent_range = PERCENT_0_TO_100;
return 1;
}

22
lib/report/report.c
View File

@ -275,18 +275,17 @@ static int _lvkmin_disp(struct dm_report *rh, struct dm_pool *mem __attribute((u
static int _lv_mimage_in_sync(const struct logical_volume *lv)
{
float percent;
percent_range_t percent_range;
struct lv_segment *mirror_seg = find_mirror_seg(first_seg(lv));
if (!(lv->status & MIRROR_IMAGE) || !mirror_seg)
return_0;
if (!lv_mirror_percent(lv->vg->cmd, mirror_seg->lv, 0, &percent, NULL))
if (!lv_mirror_percent(lv->vg->cmd, mirror_seg->lv, 0, &percent,
&percent_range, NULL))
return_0;
if (percent >= 100.0)
return 1;
return 0;
return (percent_range == PERCENT_100) ? 1 : 0;
}
static int _lvstatus_disp(struct dm_report *rh __attribute((unused)), struct dm_pool *mem,
@ -297,6 +296,7 @@ static int _lvstatus_disp(struct dm_report *rh __attribute((unused)), struct dm_
struct lvinfo info;
char *repstr;
float snap_percent;
percent_range_t percent_range;
if (!(repstr = dm_pool_zalloc(mem, 7))) {
log_error("dm_pool_alloc failed");
@ -363,8 +363,8 @@ static int _lvstatus_disp(struct dm_report *rh __attribute((unused)), struct dm_
/* Snapshot dropped? */
if (info.live_table && lv_is_cow(lv) &&
(!lv_snapshot_percent(lv, &snap_percent) ||
snap_percent < 0 || snap_percent >= 100)) {
(!lv_snapshot_percent(lv, &snap_percent, &percent_range) ||
percent_range == PERCENT_INVALID)) {
repstr[0] = toupper(repstr[0]);
if (info.suspended)
repstr[4] = 'S'; /* Susp Inv snapshot */
@ -1009,6 +1009,7 @@ static int _snpercent_disp(struct dm_report *rh __attribute((unused)), struct dm
const struct logical_volume *lv = (const struct logical_volume *) data;
struct lvinfo info;
float snap_percent;
percent_range_t percent_range;
uint64_t *sortval;
char *repstr;
@ -1030,7 +1031,8 @@ static int _snpercent_disp(struct dm_report *rh __attribute((unused)), struct dm
return 1;
}
if (!lv_snapshot_percent(lv, &snap_percent) || snap_percent < 0) {
if (!lv_snapshot_percent(lv, &snap_percent, &percent_range) ||
(percent_range == PERCENT_INVALID)) {
*sortval = UINT64_C(100);
dm_report_field_set_value(field, "100.00", sortval);
return 1;
@ -1058,6 +1060,7 @@ static int _copypercent_disp(struct dm_report *rh __attribute((unused)), struct
{
struct logical_volume *lv = (struct logical_volume *) data;
float percent;
percent_range_t percent_range;
uint64_t *sortval;
char *repstr;
@ -1067,7 +1070,8 @@ static int _copypercent_disp(struct dm_report *rh __attribute((unused)), struct
}
if ((!(lv->status & PVMOVE) && !(lv->status & MIRRORED)) ||
!lv_mirror_percent(lv->vg->cmd, lv, 0, &percent, NULL)) {
!lv_mirror_percent(lv->vg->cmd, lv, 0, &percent, &percent_range,
NULL) || (percent_range == PERCENT_INVALID)) {
*sortval = UINT64_C(0);
dm_report_field_set_value(field, "", sortval);
return 1;

22
lib/snapshot/snapshot.c
View File

@ -88,11 +88,12 @@ static int _snap_text_export(const struct lv_segment *seg, struct formatter *f)
#ifdef DEVMAPPER_SUPPORT
static int _snap_target_percent(void **target_state __attribute((unused)),
struct dm_pool *mem __attribute((unused)),
struct cmd_context *cmd __attribute((unused)),
struct lv_segment *seg __attribute((unused)),
char *params, uint64_t *total_numerator,
uint64_t *total_denominator)
percent_range_t *percent_range,
struct dm_pool *mem __attribute((unused)),
struct cmd_context *cmd __attribute((unused)),
struct lv_segment *seg __attribute((unused)),
char *params, uint64_t *total_numerator,
uint64_t *total_denominator)
{
uint64_t numerator, denominator;
@ -100,7 +101,16 @@ static int _snap_target_percent(void **target_state __attribute((unused)),
&numerator, &denominator) == 2) {
*total_numerator += numerator;
*total_denominator += denominator;
}
if (!numerator)
*percent_range = PERCENT_0;
else if (numerator == denominator)
*percent_range = PERCENT_100;
else
*percent_range = PERCENT_0_TO_100;
} else if (!strcmp(params, "Invalid"))
*percent_range = PERCENT_INVALID;
else
return 0;
return 1;
}

11
tools/lvscan.c
View File

@ -24,6 +24,7 @@ static int lvscan_single(struct cmd_context *cmd, struct logical_volume *lv,
int inkernel, snap_active = 1;
struct lv_segment *snap_seg = NULL;
float snap_percent; /* fused, fsize; */
percent_range_t percent_range;
const char *active_str, *snapshot_str;
@ -36,15 +37,17 @@ static int lvscan_single(struct cmd_context *cmd, struct logical_volume *lv,
origin_list) {
if (inkernel &&
(snap_active = lv_snapshot_percent(snap_seg->cow,
&snap_percent)))
if (snap_percent < 0 || snap_percent >= 100)
&snap_percent,
&percent_range)))
if (percent_range == PERCENT_INVALID)
snap_active = 0;
}
snap_seg = NULL;
} else if (lv_is_cow(lv)) {
if (inkernel &&
(snap_active = lv_snapshot_percent(lv, &snap_percent)))
if (snap_percent < 0 || snap_percent >= 100)
(snap_active = lv_snapshot_percent(lv, &snap_percent,
&percent_range)))
if (percent_range == PERCENT_INVALID)
snap_active = 0;
}

6
tools/polldaemon.c
View File

@ -68,10 +68,12 @@ progress_t poll_mirror_progress(struct cmd_context *cmd,
struct daemon_parms *parms)
{
float segment_percent = 0.0, overall_percent = 0.0;
percent_range_t percent_range;
uint32_t event_nr = 0;
if (!lv_mirror_percent(cmd, lv, !parms->interval, &segment_percent,
&event_nr)) {
&percent_range, &event_nr) ||
(percent_range == PERCENT_INVALID)) {
log_error("ABORTING: Mirror percentage check failed.");
return PROGRESS_CHECK_FAILED;
}
@ -84,7 +86,7 @@ progress_t poll_mirror_progress(struct cmd_context *cmd,
log_verbose("%s: %s: %.1f%%", name, parms->progress_title,
overall_percent);
if (segment_percent < 100.0)
if (percent_range != PERCENT_100)
return PROGRESS_UNFINISHED;
if (overall_percent >= 100.0)