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Code Releases Activity

Remove lvmetad

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Native disk scanning is now both reduced and
async/parallel, which makes it comparable in
performance (and often faster) when compared
to lvm using lvmetad.

Autoactivation now uses local temp files to record
online PVs, and no longer requires lvmetad.

There should be no apparent command-level change
in behavior.
This commit is contained in:
David Teigland
2018-07-10 13:39:29 -05:00
parent edf3f86184
commit 117160b27e
55 changed files with 101 additions and 8496 deletions
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61
lib/format_text/format-text.c
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@@ -28,7 +28,6 @@
#include "lib/mm/xlate.h"
#include "lib/label/label.h"
#include "lib/cache/lvmcache.h"
#include "lib/cache/lvmetad.h"
#include "lib/mm/memlock.h"
#include <unistd.h>
@@ -1569,11 +1568,6 @@ static struct metadata_area_ops _metadata_text_file_backup_ops = {
.vg_commit = _vg_commit_file_backup
};
static int _mda_export_text_raw(struct metadata_area *mda,
struct dm_config_tree *cft,
struct dm_config_node *parent);
static int _mda_import_text_raw(struct lvmcache_info *info, const struct dm_config_node *cn);
static struct metadata_area_ops _metadata_text_raw_ops = {
.vg_read = _vg_read_raw,
.vg_read_precommit = _vg_read_precommit_raw,
@@ -1591,63 +1585,8 @@ static struct metadata_area_ops _metadata_text_raw_ops = {
.pv_analyze_mda = _pv_analyze_mda_raw,
.mda_locns_match = _mda_locns_match_raw,
.mda_get_device = _mda_get_device_raw,
.mda_export_text = _mda_export_text_raw,
.mda_import_text = _mda_import_text_raw
};
/* used only for sending info to lvmetad */
static int _mda_export_text_raw(struct metadata_area *mda,
struct dm_config_tree *cft,
struct dm_config_node *parent)
{
struct mda_context *mdc = (struct mda_context *) mda->metadata_locn;
char mdah[MDA_HEADER_SIZE]; /* temporary */
if (!mdc) {
log_error(INTERNAL_ERROR "mda_export_text_raw no mdc");
return 1; /* pretend the MDA does not exist */
}
/* FIXME: why aren't ignore,start,size,free_sectors available? */
if (!_raw_read_mda_header((struct mda_header *)mdah, &mdc->area, mda_is_primary(mda)))
return 1; /* pretend the MDA does not exist */
return config_make_nodes(cft, parent, NULL,
"ignore = " FMTd64, (int64_t) mda_is_ignored(mda),
"start = " FMTd64, (int64_t) mdc->area.start,
"size = " FMTd64, (int64_t) mdc->area.size,
"free_sectors = " FMTd64, (int64_t) mdc->free_sectors,
NULL) ? 1 : 0;
}
/* used only for receiving info from lvmetad */
static int _mda_import_text_raw(struct lvmcache_info *info, const struct dm_config_node *cn)
{
struct device *device;
uint64_t offset;
uint64_t size;
int ignore;
if (!cn->child)
return 0;
cn = cn->child;
device = lvmcache_device(info);
size = dm_config_find_int64(cn, "size", 0);
if (!device || !size)
return 0;
offset = dm_config_find_int64(cn, "start", 0);
ignore = dm_config_find_int(cn, "ignore", 0);
lvmcache_add_mda(info, device, offset, size, ignore);
return 1;
}
static int _text_pv_setup(const struct format_type *fmt,
struct physical_volume *pv,
struct volume_group *vg)