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* LVM2 lib/metadata/lv_manip.c lib/metadata/merg ...
@ 2011-09-06 22:44 agk
0 siblings, 0 replies; 2+ messages in thread
From: agk @ 2011-09-06 22:44 UTC (permalink / raw)
To: lvm-devel, lvm2-cvs
CVSROOT: /cvs/lvm2
Module name: LVM2
Changes by: agk@sourceware.org 2011-09-06 22:43:58
Modified files:
lib/metadata : lv_manip.c merge.c metadata-exported.h
metadata.h thin_manip.c
lib/thin : thin.c
tools : lvcreate.c
Log message:
pool attach fns & more field renaming
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/metadata/lv_manip.c.diff?cvsroot=lvm2&r1=1.281&r2=1.282
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/metadata/merge.c.diff?cvsroot=lvm2&r1=1.46&r2=1.47
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/metadata/metadata-exported.h.diff?cvsroot=lvm2&r1=1.206&r2=1.207
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/metadata/metadata.h.diff?cvsroot=lvm2&r1=1.253&r2=1.254
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/metadata/thin_manip.c.diff?cvsroot=lvm2&r1=1.1&r2=1.2
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/thin/thin.c.diff?cvsroot=lvm2&r1=1.10&r2=1.11
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/tools/lvcreate.c.diff?cvsroot=lvm2&r1=1.237&r2=1.238
--- LVM2/lib/metadata/lv_manip.c 2011/09/06 19:25:43 1.281
+++ LVM2/lib/metadata/lv_manip.c 2011/09/06 22:43:56 1.282
@@ -257,7 +257,7 @@
if (log_lv) {
if (thin_pool_lv) {
- if (!attach_pool_metadata(seg, log_lv))
+ if (!attach_pool_metadata_lv(seg, log_lv))
return_NULL;
} else if (!attach_mirror_log(seg, log_lv))
return_NULL;
--- LVM2/lib/metadata/merge.c 2011/09/06 00:26:43 1.46
+++ LVM2/lib/metadata/merge.c 2011/09/06 22:43:57 1.47
@@ -313,7 +313,7 @@
if (!(split_seg = alloc_lv_segment(lv->vg->vgmem, seg->segtype,
seg->lv, seg->le, seg->len,
seg->status, seg->stripe_size,
- seg->log_lv, seg->thin_pool_lv,
+ seg->log_lv, seg->pool_lv,
seg->area_count, seg->area_len,
seg->chunk_size, seg->region_size,
seg->extents_copied, seg->pvmove_source_seg))) {
--- LVM2/lib/metadata/metadata-exported.h 2011/09/06 19:25:43 1.206
+++ LVM2/lib/metadata/metadata-exported.h 2011/09/06 22:43:57 1.207
@@ -85,6 +85,8 @@
#define THIN_VOLUME UINT64_C(0x0000001000000000) /* LV */
#define THIN_POOL UINT64_C(0x0000002000000000) /* LV */
+#define THIN_POOL_DATA UINT64_C(0x0000002000000000) /* LV */
+#define THIN_POOL_METADATA UINT64_C(0x0000004000000000) /* LV */
#define LVM_READ 0x00000100U /* LV VG 32-bit */
#define LVM_WRITE 0x00000200U /* LV VG 32-bit */
@@ -134,6 +136,8 @@
#define lv_is_thin_volume(lv) ((lv)->status & THIN_VOLUME ? 1 : 0)
#define lv_is_thin_pool(lv) ((lv)->status & THIN_POOL ? 1 : 0)
+#define lv_is_thin_pool_data(lv) ((lv)->status & THIN_POOL_DATA ? 1 : 0)
+#define lv_is_thin_pool_metadata(lv) ((lv)->status & THIN_POOL_METADATA ? 1 : 0)
#define lv_is_mirrored(lv) ((lv)->status & MIRRORED ? 1 : 0)
#define lv_is_rlog(lv) ((lv)->status & REPLICATOR_LOG ? 1 : 0)
@@ -322,12 +326,12 @@
struct dm_list tags;
struct lv_segment_area *areas;
- struct lv_segment_area *meta_areas; /* For RAID */
- struct logical_volume *pool_lv; /* For thin_pool */
- struct logical_volume *metadata_lv; /* For thin_pool */
+ struct lv_segment_area *meta_areas; /* For RAID */
+ struct logical_volume *pool_data_lv; /* For thin_pool */
+ struct logical_volume *pool_metadata_lv;/* For thin_pool */
uint64_t transaction_id; /* For thin_pool */
uint32_t zero_new_blocks; /* For thin_pool */
- struct logical_volume *thin_pool_lv; /* For thin */
+ struct logical_volume *pool_lv; /* For thin */
uint64_t device_id; /* For thin */
struct logical_volume *replicator;/* For replicator-devs - link to replicator LV */
--- LVM2/lib/metadata/metadata.h 2011/09/06 19:25:43 1.253
+++ LVM2/lib/metadata/metadata.h 2011/09/06 22:43:57 1.254
@@ -442,9 +442,11 @@
/*
* From thin_manip.c
*/
-int attach_pool_metadata(struct lv_segment *seg,
- struct logical_volume *thin_pool_metadata);
-int attach_pool_lv(struct lv_segment *seg, struct logical_volume *thin_pool_lv);
+int attach_pool_metadata_lv(struct lv_segment *seg,
+ struct logical_volume *pool_metadata_lv);
+int attach_pool_data_lv(struct lv_segment *seg,
+ struct logical_volume *pool_data_lv);
+int attach_pool_lv(struct lv_segment *seg, struct logical_volume *pool_lv);
/*
* Begin skeleton for external LVM library
--- LVM2/lib/metadata/thin_manip.c 2011/09/06 19:25:43 1.1
+++ LVM2/lib/metadata/thin_manip.c 2011/09/06 22:43:57 1.2
@@ -15,19 +15,28 @@
#include "lib.h"
#include "metadata.h"
-int attach_pool_metadata(struct lv_segment *seg, struct logical_volume *thin_pool_metadata)
+int attach_pool_metadata_lv(struct lv_segment *seg, struct logical_volume *pool_metadata_lv)
{
- // FIXME Housekeeping needed here (cf attach_mirror_log)
- seg->metadata_lv = thin_pool_metadata;
+ seg->pool_metadata_lv = pool_metadata_lv;
+ pool_metadata_lv->status |= THIN_POOL_METADATA;
+ lv_set_hidden(pool_metadata_lv);
- return 1;
+ return add_seg_to_segs_using_this_lv(pool_metadata_lv, seg);
}
-int attach_pool_lv(struct lv_segment *seg, struct logical_volume *thin_pool_lv)
+int attach_pool_data_lv(struct lv_segment *seg, struct logical_volume *pool_data_lv)
{
- // FIXME Housekeeping needed here (cf attach_mirror_log)
- seg->thin_pool_lv = thin_pool_lv;
+ seg->pool_data_lv = pool_data_lv;
+ pool_data_lv->status |= THIN_POOL_DATA;
+ lv_set_hidden(pool_data_lv);
- return 1;
+ return add_seg_to_segs_using_this_lv(pool_data_lv, seg);
}
+int attach_pool_lv(struct lv_segment *seg, struct logical_volume *pool_lv)
+{
+ seg->pool_lv = pool_lv;
+ pool_lv->status |= THIN_POOL;
+
+ return add_seg_to_segs_using_this_lv(pool_lv, seg);
+}
--- LVM2/lib/thin/thin.c 2011/09/06 22:35:44 1.10
+++ LVM2/lib/thin/thin.c 2011/09/06 22:43:57 1.11
@@ -47,21 +47,26 @@
struct dm_hash_table *pv_hash __attribute__((unused)))
{
const char *lv_name;
+ struct logical_volume *pool_data_lv, *pool_metadata_lv;
if (!dm_config_get_str(sn, "pool", &lv_name))
return SEG_LOG_ERROR("Pool must be a string in");
-// Use attach_pool_lv
- if (!(seg->pool_lv = find_lv(seg->lv->vg, lv_name)))
+ if (!(pool_data_lv = find_lv(seg->lv->vg, lv_name)))
return SEG_LOG_ERROR("Unknown pool %s in", lv_name);
if (!dm_config_get_str(sn, "metadata", &lv_name))
return SEG_LOG_ERROR("Metadata must be a string in");
-// Use attach_pool_metadata()
- if (!(seg->metadata_lv = find_lv(seg->lv->vg, lv_name)))
+ if (!(pool_metadata_lv = find_lv(seg->lv->vg, lv_name)))
return SEG_LOG_ERROR("Unknown metadata %s in", lv_name);
+ if (!attach_pool_metadata_lv(seg, pool_metadata_lv))
+ return_0;
+
+ if (!attach_pool_data_lv(seg, pool_data_lv))
+ return_0;
+
if (!dm_config_get_uint64(sn, "transaction_id", &seg->transaction_id))
return SEG_LOG_ERROR("Could not read transaction_id for");
@@ -74,8 +79,8 @@
static int _thin_pool_text_export(const struct lv_segment *seg, struct formatter *f)
{
- outf(f, "pool = \"%s\"", seg->pool_lv->name);
- outf(f, "metadata = \"%s\"", seg->metadata_lv->name);
+ outf(f, "pool = \"%s\"", seg->pool_data_lv->name);
+ outf(f, "metadata = \"%s\"", seg->pool_metadata_lv->name);
outf(f, "transaction_id = %" PRIu64, seg->transaction_id);
if (seg->zero_new_blocks)
outf(f, "zero_new_blocks = 1");
@@ -92,13 +97,17 @@
struct dm_hash_table *pv_hash __attribute__((unused)))
{
const char *lv_name;
+ struct logical_volume *pool_lv;
if (!dm_config_get_str(sn, "thin_pool", &lv_name))
return SEG_LOG_ERROR("Thin pool must be a string in");
- if (!(seg->thin_pool_lv = find_lv(seg->lv->vg, lv_name)))
+ if (!(pool_lv = find_lv(seg->lv->vg, lv_name)))
return SEG_LOG_ERROR("Unknown thin pool %s in", lv_name);
+ if (!attach_pool_lv(seg, pool_lv))
+ return_0;
+
if (dm_config_has_node(sn, "origin")) {
if (!dm_config_get_str(sn, "origin", &lv_name))
return SEG_LOG_ERROR("Origin must be a string in");
@@ -115,7 +124,7 @@
static int _thin_text_export(const struct lv_segment *seg, struct formatter *f)
{
- outf(f, "thin_pool = \"%s\"", seg->thin_pool_lv->name);
+ outf(f, "thin_pool = \"%s\"", seg->pool_lv->name);
outf(f, "device_id = %" PRIu64, seg->device_id);
if (seg->origin)
--- LVM2/tools/lvcreate.c 2011/09/06 19:25:42 1.237
+++ LVM2/tools/lvcreate.c 2011/09/06 22:43:58 1.238
@@ -198,13 +198,12 @@
return 0;
}
- /* FIXME Replace with lv_is_thin_volume() once more flags are added */
if (lv_is_thin_volume(lvl->lv)) {
lp->thin = 1;
if (!(lp->segtype = get_segtype_from_string(vg->cmd, "thin")))
return_0;
- lp->pool = first_seg(lvl->lv)->thin_pool_lv->name;
+ lp->pool = first_seg(lvl->lv)->pool_lv->name;
}
if (!lp->thin && !arg_count(vg->cmd, extents_ARG) && !arg_count(vg->cmd, size_ARG)) {
^ permalink raw reply [flat|nested] 2+ messages in thread
* LVM2 lib/metadata/lv_manip.c lib/metadata/merg ...
@ 2011-11-07 11:03 zkabelac
0 siblings, 0 replies; 2+ messages in thread
From: zkabelac @ 2011-11-07 11:03 UTC (permalink / raw)
To: lvm-devel, lvm2-cvs
CVSROOT: /cvs/lvm2
Module name: LVM2
Changes by: zkabelac@sourceware.org 2011-11-07 11:03:48
Modified files:
lib/metadata : lv_manip.c merge.c metadata.h thin_manip.c
lib/report : report.c
lib/thin : thin.c
tools : lvcreate.c
Log message:
Thin supports snapshots
Full support for thin snapshots.
Create and remove is supported.
TODO: lvconvert support is not yes available.
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/metadata/lv_manip.c.diff?cvsroot=lvm2&r1=1.324&r2=1.325
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/metadata/merge.c.diff?cvsroot=lvm2&r1=1.54&r2=1.55
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/metadata/metadata.h.diff?cvsroot=lvm2&r1=1.263&r2=1.264
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/metadata/thin_manip.c.diff?cvsroot=lvm2&r1=1.23&r2=1.24
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/report/report.c.diff?cvsroot=lvm2&r1=1.146&r2=1.147
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/thin/thin.c.diff?cvsroot=lvm2&r1=1.30&r2=1.31
http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/tools/lvcreate.c.diff?cvsroot=lvm2&r1=1.246&r2=1.247
--- LVM2/lib/metadata/lv_manip.c 2011/11/07 10:58:13 1.324
+++ LVM2/lib/metadata/lv_manip.c 2011/11/07 11:03:47 1.325
@@ -255,9 +255,16 @@
dm_list_init(&seg->thin_messages);
if (thin_pool_lv) {
- seg->transaction_id = first_seg(thin_pool_lv)->transaction_id;
- if (!attach_pool_lv(seg, thin_pool_lv))
- return_NULL;
+ /* If this thin volume, thin snapshot is being created */
+ if (lv_is_thin_volume(thin_pool_lv)) {
+ seg->transaction_id = first_seg(first_seg(thin_pool_lv)->pool_lv)->transaction_id;
+ if (!attach_pool_lv(seg, first_seg(thin_pool_lv)->pool_lv, thin_pool_lv))
+ return_NULL;
+ } else {
+ seg->transaction_id = first_seg(thin_pool_lv)->transaction_id;
+ if (!attach_pool_lv(seg, thin_pool_lv, NULL))
+ return_NULL;
+ }
}
if (log_lv && !attach_mirror_log(seg, log_lv))
@@ -4004,8 +4011,20 @@
status |= lp->permission | VISIBLE_LV;
- /* FIXME Thin snapshots are different */
- if (lp->snapshot) {
+ if (lp->snapshot && lp->thin) {
+ if (!(org = find_lv(vg, lp->origin))) {
+ log_error("Couldn't find origin volume '%s'.",
+ lp->origin);
+ return NULL;
+ }
+
+ if (org->status & LOCKED) {
+ log_error("Snapshots of locked devices are not supported.");
+ return NULL;
+ }
+
+ lp->voriginextents = org->le_count;
+ } else if (lp->snapshot) {
if (!activation()) {
log_error("Can't create snapshot without using "
"device-mapper kernel driver");
@@ -4074,7 +4093,7 @@
return NULL;
}
- if (lp->snapshot && (lp->extents * vg->extent_size < 2 * lp->chunk_size)) {
+ if (lp->snapshot && !lp->thin && (lp->extents * vg->extent_size < 2 * lp->chunk_size)) {
log_error("Unable to create a snapshot smaller than 2 chunks.");
return NULL;
}
@@ -4105,7 +4124,7 @@
}
/* The snapshot segment gets created later */
- if (lp->snapshot &&
+ if (lp->snapshot && !lp->thin &&
!(lp->segtype = get_segtype_from_string(cmd, "striped")))
return_NULL;
@@ -4173,7 +4192,7 @@
lp->mirrors,
seg_is_thin_pool(lp) ? lp->poolmetadataextents : lp->region_size,
seg_is_thin_volume(lp) ? lp->voriginextents : lp->extents,
- seg_is_thin_volume(lp) ? lp->pool : NULL, lp->pvh, lp->alloc))
+ seg_is_thin_volume(lp) ? (org ? org->name : lp->pool) : NULL, lp->pvh, lp->alloc))
return_NULL;
if (seg_is_thin_pool(lp)) {
@@ -4221,6 +4240,24 @@
init_dmeventd_monitor(lp->activation_monitoring);
if (seg_is_thin(lp)) {
+
+ /* For thin snapshot suspend active thin origin first */
+ if (org && lv_is_active(org)) {
+ if (!suspend_lv(cmd, org)) {
+ log_error("Failed to suspend thin origin %s.",
+ org->name);
+ goto revert_new_lv;
+ } else if (!resume_lv(cmd, org)) {
+ log_error("Failed to resume thin origin %s.",
+ org->name);
+ goto revert_new_lv;
+ }
+ /* At this point snapshot is active in kernel thin mda */
+ if (!update_pool_lv(first_seg(org)->pool_lv, 0)) {
+ stack;
+ goto deactivate_and_revert_new_lv;
+ }
+ }
if (((lp->activate == CHANGE_AY) ||
(lp->activate == CHANGE_AE) ||
(lp->activate == CHANGE_ALY))) {
@@ -4261,7 +4298,7 @@
goto deactivate_and_revert_new_lv;
}
- if (lp->snapshot) {
+ if (lp->snapshot && !lp->thin) {
/* Reset permission after zeroing */
if (!(lp->permission & LVM_WRITE))
lv->status &= ~LVM_WRITE;
--- LVM2/lib/metadata/merge.c 2011/10/23 16:02:02 1.54
+++ LVM2/lib/metadata/merge.c 2011/11/07 11:03:47 1.55
@@ -373,6 +373,8 @@
seg_found++;
if (seg->pool_metadata_lv == lv || seg->pool_lv == lv)
seg_found++;
+ if (seg_is_thin_volume(seg) && seg->origin == lv)
+ seg_found++;
if (!seg_found) {
log_error("LV %s is used by LV %s:%" PRIu32 "-%" PRIu32
", but missing ptr from %s to %s",
--- LVM2/lib/metadata/metadata.h 2011/10/30 22:01:39 1.263
+++ LVM2/lib/metadata/metadata.h 2011/11/07 11:03:47 1.264
@@ -456,7 +456,8 @@
struct logical_volume *pool_metadata_lv);
int attach_pool_data_lv(struct lv_segment *seg,
struct logical_volume *pool_data_lv);
-int attach_pool_lv(struct lv_segment *seg, struct logical_volume *pool_lv);
+int attach_pool_lv(struct lv_segment *seg, struct logical_volume *pool_lv,
+ struct logical_volume *origin_lv);
int detach_pool_lv(struct lv_segment *seg);
int attach_pool_message(struct lv_segment *seg, dm_thin_message_t type,
struct logical_volume *lv, uint32_t delete_id,
--- LVM2/lib/metadata/thin_manip.c 2011/11/07 10:59:07 1.23
+++ LVM2/lib/metadata/thin_manip.c 2011/11/07 11:03:47 1.24
@@ -39,10 +39,15 @@
return 1;
}
-int attach_pool_lv(struct lv_segment *seg, struct logical_volume *pool_lv)
+int attach_pool_lv(struct lv_segment *seg, struct logical_volume *pool_lv,
+ struct logical_volume *origin)
{
seg->pool_lv = pool_lv;
seg->lv->status |= THIN_VOLUME;
+ seg->origin = origin;
+
+ if (origin && !add_seg_to_segs_using_this_lv(origin, seg))
+ return_0;
return add_seg_to_segs_using_this_lv(pool_lv, seg);
}
@@ -50,6 +55,7 @@
int detach_pool_lv(struct lv_segment *seg)
{
struct lv_thin_message *tmsg, *tmp;
+ struct seg_list *sl, *tsl;
if (!seg->pool_lv || !lv_is_thin_pool(seg->pool_lv)) {
log_error(INTERNAL_ERROR "LV %s is not a thin volume",
@@ -78,7 +84,30 @@
NULL, seg->device_id, 0))
return_0;
- return remove_seg_from_segs_using_this_lv(seg->pool_lv, seg);
+ if (!remove_seg_from_segs_using_this_lv(seg->pool_lv, seg))
+ return_0;
+
+ if (seg->origin &&
+ !remove_seg_from_segs_using_this_lv(seg->origin, seg))
+ return_0;
+
+ /* If thin origin, remove it from related thin snapshots */
+ /*
+ * TODO: map removal of origin as snapshot lvconvert --merge?
+ * i.e. rename thin snapshot to origin thin origin
+ */
+ dm_list_iterate_items_safe(sl, tsl, &seg->lv->segs_using_this_lv) {
+ if (!seg_is_thin_volume(sl->seg) ||
+ (seg->lv != sl->seg->origin))
+ continue;
+
+ if (!remove_seg_from_segs_using_this_lv(seg->lv, sl->seg))
+ return_0;
+ /* Thin snapshot is now regular thin volume */
+ sl->seg->origin = NULL;
+ }
+
+ return 1;
}
int attach_pool_message(struct lv_segment *seg, dm_thin_message_t type,
--- LVM2/lib/report/report.c 2011/09/09 00:54:49 1.146
+++ LVM2/lib/report/report.c 2011/11/07 11:03:47 1.147
@@ -309,6 +309,9 @@
if (lv_is_cow(lv))
return _lvname_disp(rh, mem, field, origin_from_cow(lv), private);
+ if (lv_is_thin_volume(lv) && first_seg(lv)->origin)
+ return _lvname_disp(rh, mem, field, first_seg(lv)->origin, private);
+
dm_report_field_set_value(field, "", NULL);
return 1;
}
--- LVM2/lib/thin/thin.c 2011/11/03 14:52:10 1.30
+++ LVM2/lib/thin/thin.c 2011/11/07 11:03:48 1.31
@@ -317,7 +317,7 @@
struct dm_hash_table *pv_hash __attribute__((unused)))
{
const char *lv_name;
- struct logical_volume *pool_lv;
+ struct logical_volume *pool_lv, *origin = NULL;
if (!dm_config_get_str(sn, "thin_pool", &lv_name))
return SEG_LOG_ERROR("Thin pool must be a string in");
@@ -325,9 +325,6 @@
if (!(pool_lv = find_lv(seg->lv->vg, lv_name)))
return SEG_LOG_ERROR("Unknown thin pool %s in", lv_name);
- if (!attach_pool_lv(seg, pool_lv))
- return_0;
-
if (!dm_config_get_uint64(sn, "transaction_id", &seg->transaction_id))
return SEG_LOG_ERROR("Could not read transaction_id for");
@@ -335,7 +332,7 @@
if (!dm_config_get_str(sn, "origin", &lv_name))
return SEG_LOG_ERROR("Origin must be a string in");
- if (!(seg->origin = find_lv(seg->lv->vg, lv_name)))
+ if (!(origin = find_lv(seg->lv->vg, lv_name)))
return SEG_LOG_ERROR("Unknown origin %s in", lv_name);
}
@@ -346,6 +343,9 @@
return SEG_LOG_ERROR("Unsupported value %u for device_id",
seg->device_id);
+ if (!attach_pool_lv(seg, pool_lv, origin))
+ return_0;
+
return 1;
}
--- LVM2/tools/lvcreate.c 2011/11/07 11:01:54 1.246
+++ LVM2/tools/lvcreate.c 2011/11/07 11:03:48 1.247
@@ -1013,13 +1013,6 @@
lp.pool, lp.vg_name, lp.snapshot ? " as snapshot of " : "",
lp.snapshot ? lp.origin : "", lp.segtype->name);
- /* FIXME Remove when thin snapshots are supported. */
- if (lp.thin && lp.snapshot) {
- log_error("Thin snapshots are not yet supported.");
- r = ECMD_FAILED;
- goto_out;
- }
-
if (!lv_create_single(vg, &lp)) {
stack;
r = ECMD_FAILED;
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2011-11-07 11:03 UTC | newest]
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2011-09-06 22:44 LVM2 lib/metadata/lv_manip.c lib/metadata/merg agk
2011-11-07 11:03 zkabelac
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