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cleanup: consolidate lv_layout and lv_role reporting

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This patch makes the keyword combinations found in "lv_layout" and
"lv_role" much more understandable - there were some ambiguities
for some of the combinations which lead to confusion before.

Now, the scheme used is:

LAYOUTS ("how the LV is laid out"):
===================================
[linear] (all segments have number of stripes = 1)

[striped] (all segments have number of stripes > 1)

[linear,striped] (mixed linear and striped)

raid (raid layout always reported together with raid level, raid layout == image + metadata LVs underneath that make up raid LV)
  [raid,raid1]
  [raid,raid10]
  [raid,raid4]
  [raid,raid5] (exact sublayout not specified during creation - default one used - raid5_ls)
    [raid,raid5,raid5_ls]
    [raid,raid5,raid6_rs]
    [raid,raid5,raid5_la]
    [raid,raid5,raid5_ra]
  [raid6,raid] (exact sublayout not specified during creation - default one used - raid6_zr)
    [raid,raid6,raid6_zr]
    [raid,raid6,raid6_nc]
    [raid,raid6,raid6_ns]

[mirror] (mirror layout == log + image LVs underneath that make up mirror LV)

thin (thin layout always reported together with sublayout)
  [thin,sparse] (thin layout == allocated out of thin pool)
  [thin,pool] (thin pool layout == data + metadata volumes underneath that make up thin pool LV, not supposed to be used for direct use!!!)

[cache] (cache layout == allocated out of cache pool in conjunction with cache origin)
  [cache,pool] (cache pool layout == data + metadata volumes underneath that make up cache pool LV, not supposed to be used for direct use!!!)

[virtual] (virtual layout == not hitting disk underneath, currently this layout denotes only 'zero' device used for origin,thickorigin role)

[unknown] (either error state or missing recognition for such layout)

ROLES ("what's the purpose or use of the LV - what is its role"):
=================================================================
- each LV has either of these two roles at least:  [public] (public LV that users may use freely to write their data to)

  [public] (public LV that users may use freely to write their data to)
  [private] (private LV that LVM maintains; not supposed to be directly used by user to write his data to)

- and then some special-purpose roles in addition to that:

  [origin,thickorigin] (origin for thick-style snapshot; "thick" as opposed to "thin")
  [origin,multithickorigin] (there are more than 2 thick-style snapshots for this origin)
  [origin,thinorigin] (origin for thin snapshot)
  [origin,multithinorigin] (there are more than 2 thin snapshots for this origin)
  [origin,extorigin] (external origin for thin snapshot)
  [origin,multiextoriginl (there are more than 2 thin snapshots using this external origin)
  [origin,cacheorigin] (cache origin)

  [snapshot,thicksnapshot] (thick-style snapshot; "thick" as opposed to "thin")
  [snapshot,thinsnapshot] (thin-style snapshot)

  [raid,metadata] (raid metadata LV)
  [raid,image] (raid image LV)

  [mirror,image] (mirror image LV)
  [mirror,log] (mirror log LV)
  [pvmove] (pvmove LV)

  [thin,pool,data] (thin pool data LV)
  [thin,pool,metadata] (thin pool metadata LV)

  [cache,pool,data] (cache pool data LV)
  [cache,pool,metadata] (cache pool metadata LV)

  [pool,spare] (pool spare LV - common role of LV that makes it used for both thin and cache repairs)
This commit is contained in:
Peter Rajnoha 2014-08-25 10:02:32 +02:00
parent 2d344c2e45
commit f4e56b2829
3 changed files with 243 additions and 160 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
lib/datastruct/str_list.c
View File

@ -30,7 +30,7 @@ struct dm_list *str_list_create(struct dm_pool *mem)
return sl;
}
int str_list_add_no_dup_check(struct dm_pool *mem, struct dm_list *sll, const char *str)
static int _str_list_add_no_dup_check(struct dm_pool *mem, struct dm_list *sll, const char *str, int as_first)
{
struct dm_str_list *sln;
@ -41,11 +41,24 @@ int str_list_add_no_dup_check(struct dm_pool *mem, struct dm_list *sll, const ch
return_0;
sln->str = str;
dm_list_add(sll, &sln->list);
if (as_first)
dm_list_add_h(sll, &sln->list);
else
dm_list_add(sll, &sln->list);
return 1;
}
int str_list_add_no_dup_check(struct dm_pool *mem, struct dm_list *sll, const char *str)
{
return _str_list_add_no_dup_check(mem, sll, str, 0);
}
int str_list_add_h_no_dup_check(struct dm_pool *mem, struct dm_list *sll, const char *str)
{
return _str_list_add_no_dup_check(mem, sll, str, 1);
}
int str_list_add(struct dm_pool *mem, struct dm_list *sll, const char *str)
{
if (!str)

1
lib/datastruct/str_list.h
View File

@ -22,6 +22,7 @@ struct dm_pool;
struct dm_list *str_list_create(struct dm_pool *mem);
int str_list_add(struct dm_pool *mem, struct dm_list *sll, const char *str);
int str_list_add_no_dup_check(struct dm_pool *mem, struct dm_list *sll, const char *str);
int str_list_add_h_no_dup_check(struct dm_pool *mem, struct dm_list *sll, const char *str);
void str_list_del(struct dm_list *sll, const char *str);
int str_list_match_item(const struct dm_list *sll, const char *str);
int str_list_match_list(const struct dm_list *sll, const struct dm_list *sll2, const char **tag_matched);

385
lib/metadata/lv_manip.c
View File

@ -85,103 +85,128 @@ struct pv_and_int {
enum {
LV_TYPE_UNKNOWN,
LV_TYPE_PUBLIC,
LV_TYPE_PRIVATE,
LV_TYPE_LINEAR,
LV_TYPE_STRIPED,
LV_TYPE_MIRROR,
LV_TYPE_RAID,
LV_TYPE_THIN,
LV_TYPE_CACHE,
LV_TYPE_SPARSE,
LV_TYPE_ORIGIN,
LV_TYPE_MULTIPLE,
LV_TYPE_THINORIGIN,
LV_TYPE_MULTITHINORIGIN,
LV_TYPE_THICKORIGIN,
LV_TYPE_MULTITHICKORIGIN,
LV_TYPE_CACHEORIGIN,
LV_TYPE_EXTTHINORIGIN,
LV_TYPE_MULTIEXTTHINORIGIN,
LV_TYPE_SNAPSHOT,
LV_TYPE_THINSNAPSHOT,
LV_TYPE_THICKSNAPSHOT,
LV_TYPE_PVMOVE,
LV_TYPE_IMAGE,
LV_TYPE_LOG,
LV_TYPE_METADATA,
LV_TYPE_POOL,
LV_TYPE_DATA,
LV_TYPE_EXTERNAL,
LV_TYPE_SPARE,
LV_TYPE_VIRTUAL,
LV_TYPE_RAID_LEVEL1,
LV_TYPE_RAID_LEVEL10,
LV_TYPE_RAID_LEVEL4,
LV_TYPE_RAID_LEVEL5,
LV_TYPE_RAID_LEVEL6,
LV_TYPE_RAID_LEFT_ASYMMETRIC,
LV_TYPE_RAID_RIGHT_ASYMMETRIC,
LV_TYPE_RAID_LEFT_SYMMETRIC,
LV_TYPE_RAID_RIGHT_SYMMETRIC,
LV_TYPE_RAID_ZERO_RESTART,
LV_TYPE_RAID_N_RESTART,
LV_TYPE_RAID_N_CONTINUE,
LV_TYPE_RAID1,
LV_TYPE_RAID10,
LV_TYPE_RAID4,
LV_TYPE_RAID5,
LV_TYPE_RAID5_LA,
LV_TYPE_RAID5_RA,
LV_TYPE_RAID5_LS,
LV_TYPE_RAID5_RS,
LV_TYPE_RAID6,
LV_TYPE_RAID6_ZR,
LV_TYPE_RAID6_NR,
LV_TYPE_RAID6_NC,
};
static const char *_lv_type_names[] = {
[LV_TYPE_UNKNOWN] = "unknown",
[LV_TYPE_PUBLIC] = "public",
[LV_TYPE_PRIVATE] = "private",
[LV_TYPE_LINEAR] = "linear",
[LV_TYPE_STRIPED] = "striped",
[LV_TYPE_MIRROR] = "mirror",
[LV_TYPE_RAID] = "raid",
[LV_TYPE_THIN] = "thin",
[LV_TYPE_CACHE] = "cache",
[LV_TYPE_SPARSE] = "sparse",
[LV_TYPE_ORIGIN] = "origin",
[LV_TYPE_MULTIPLE] = "multiple",
[LV_TYPE_THINORIGIN] = "thinorigin",
[LV_TYPE_MULTITHINORIGIN] = "multithinorigin",
[LV_TYPE_THICKORIGIN] = "thickorigin",
[LV_TYPE_MULTITHICKORIGIN] = "multithickorigin",
[LV_TYPE_CACHEORIGIN] = "cacheorigin",
[LV_TYPE_EXTTHINORIGIN] = "extthinorigin",
[LV_TYPE_MULTIEXTTHINORIGIN] = "multiextthinorigin",
[LV_TYPE_SNAPSHOT] = "snapshot",
[LV_TYPE_THINSNAPSHOT] = "thinsnapshot",
[LV_TYPE_THICKSNAPSHOT] = "thicksnapshot",
[LV_TYPE_PVMOVE] = "pvmove",
[LV_TYPE_IMAGE] = "image",
[LV_TYPE_LOG] = "log",
[LV_TYPE_METADATA] = "metadata",
[LV_TYPE_POOL] = "pool",
[LV_TYPE_DATA] = "data",
[LV_TYPE_EXTERNAL] = "external",
[LV_TYPE_SPARE] = "spare",
[LV_TYPE_VIRTUAL] = "virtual",
[LV_TYPE_RAID_LEVEL1] = "level1",
[LV_TYPE_RAID_LEVEL10] = "level10",
[LV_TYPE_RAID_LEVEL4] = "level4",
[LV_TYPE_RAID_LEVEL5] = "level5",
[LV_TYPE_RAID_LEVEL6] = "level6",
[LV_TYPE_RAID_LEFT_ASYMMETRIC] = "left-asymmetric",
[LV_TYPE_RAID_RIGHT_ASYMMETRIC] = "right-asymmetric",
[LV_TYPE_RAID_LEFT_SYMMETRIC] = "left-symmetric",
[LV_TYPE_RAID_RIGHT_SYMMETRIC] = "right-symmetric",
[LV_TYPE_RAID_ZERO_RESTART] = "zero-restart",
[LV_TYPE_RAID_N_RESTART] = "n-restart",
[LV_TYPE_RAID_N_CONTINUE] = "n-continue",
[LV_TYPE_RAID1] = "raid1",
[LV_TYPE_RAID10] = "raid10",
[LV_TYPE_RAID4] = "raid4",
[LV_TYPE_RAID5] = "raid5",
[LV_TYPE_RAID5_LA] = "raid5_la",
[LV_TYPE_RAID5_RA] = "raid5_ra",
[LV_TYPE_RAID5_LS] = "raid5_ls",
[LV_TYPE_RAID5_RS] = "raid5_rs",
[LV_TYPE_RAID6] = "raid6",
[LV_TYPE_RAID6_ZR] = "raid6_zr",
[LV_TYPE_RAID6_NR] = "raid6_nr",
[LV_TYPE_RAID6_NC] = "raid6_nc",
};
static int _lv_layout_and_role_mirror(struct dm_pool *mem,
const struct logical_volume *lv,
struct dm_list *layout,
struct dm_list *role)
struct dm_list *role,
int *public_lv)
{
int top_level = 1;
int top_level = 0;
/* non-top-level LVs */
if (lv_is_mirror_image(lv)) {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_IMAGE]))
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_MIRROR]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_IMAGE]))
goto_bad;
top_level = 0;
} else if (lv_is_mirror_log(lv)) {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_LOG]))
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_MIRROR]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_LOG]))
goto_bad;
if (lv_is_mirrored(lv) &&
!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_MIRROR]))
goto_bad;
top_level = 0;
} else if (lv->status & PVMOVE) {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_PVMOVE]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_MIRROR]))
!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_MIRROR]))
goto_bad;
} else
top_level = 1;
if (!top_level) {
*public_lv = 0;
return 1;
}
if (top_level) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_MIRROR]))
goto_bad;
} else {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_MIRROR]))
goto_bad;
}
/* top-level LVs */
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_MIRROR]))
goto_bad;
return 1;
bad:
@ -191,69 +216,75 @@ bad:
static int _lv_layout_and_role_raid(struct dm_pool *mem,
const struct logical_volume *lv,
struct dm_list *layout,
struct dm_list *role)
struct dm_list *role,
int *public_lv)
{
int top_level = 1;
int top_level = 0;
const char *seg_name;
/* non-top-level LVs */
if (lv_is_raid_image(lv)) {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_IMAGE]))
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_RAID]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_IMAGE]))
goto_bad;
top_level = 0;
} else if (lv_is_raid_metadata(lv)) {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_METADATA]))
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_RAID]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_METADATA]))
goto_bad;
top_level = 0;
} else if (!strcmp(first_seg(lv)->segtype->name, SEG_TYPE_NAME_RAID1)) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID_LEVEL1]))
} else
top_level = 1;
if (!top_level) {
*public_lv = 0;
return 1;
}
/* top-level LVs */
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID]))
goto_bad;
if (!strcmp(first_seg(lv)->segtype->name, SEG_TYPE_NAME_RAID1)) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID1]))
goto_bad;
} else if (!strcmp(first_seg(lv)->segtype->name, SEG_TYPE_NAME_RAID10)) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID_LEVEL10]))
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID10]))
goto_bad;
} else if (!strcmp(first_seg(lv)->segtype->name, SEG_TYPE_NAME_RAID4)) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID_LEVEL4]))
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID4]))
goto_bad;
} else if (!strncmp(seg_name = first_seg(lv)->segtype->name, SEG_TYPE_NAME_RAID5, strlen(SEG_TYPE_NAME_RAID5))) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID_LEVEL5]))
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID5]))
goto_bad;
if (!strcmp(seg_name, SEG_TYPE_NAME_RAID5_LA)) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID_LEFT_ASYMMETRIC]))
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID5_LA]))
goto_bad;
} else if (!strcmp(seg_name, SEG_TYPE_NAME_RAID5_RA)) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID_RIGHT_ASYMMETRIC]))
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID5_RA]))
goto_bad;
} else if (!strcmp(seg_name, SEG_TYPE_NAME_RAID5_LS)) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID_LEFT_SYMMETRIC]))
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID5_LS]))
goto_bad;
} else if (!strcmp(seg_name, SEG_TYPE_NAME_RAID5_RS)) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID_RIGHT_SYMMETRIC]))
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID5_RS]))
goto_bad;
}
} else if (!strncmp(seg_name = first_seg(lv)->segtype->name, SEG_TYPE_NAME_RAID6, strlen(SEG_TYPE_NAME_RAID6))) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID_LEVEL6]))
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID6]))
goto_bad;
if (!strcmp(seg_name, SEG_TYPE_NAME_RAID6_ZR)) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID_ZERO_RESTART]))
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID6_ZR]))
goto_bad;
} else if (!strcmp(seg_name, SEG_TYPE_NAME_RAID6_NR)) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID_N_RESTART]))
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID6_NR]))
goto_bad;
} else if (!strcmp(seg_name, SEG_TYPE_NAME_RAID6_NC)) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID_N_CONTINUE]))
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID6_NC]))
goto_bad;
}
}
if (top_level) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_RAID]))
goto_bad;
} else {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_RAID]))
goto_bad;
}
return 1;
bad:
return 0;
@ -262,46 +293,62 @@ bad:
static int _lv_layout_and_role_thin(struct dm_pool *mem,
const struct logical_volume *lv,
struct dm_list *layout,
struct dm_list *role)
struct dm_list *role,
int *public_lv)
{
int top_level = 1;
int top_level = 0;
unsigned snap_count;
struct lv_segment *seg;
if (lv_is_thin_pool(lv)) {
/* non-top-level LVs */
if (lv_is_thin_pool_metadata(lv)) {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_THIN]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_POOL]) ||
!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_POOL]))
goto_bad;
} else if (lv_is_thin_pool_metadata(lv)) {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_POOL]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_METADATA]))
goto_bad;
top_level = 0;
} else if (lv_is_thin_pool_data(lv)) {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_POOL]) ||
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_THIN]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_POOL]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_DATA]))
goto_bad;
top_level = 0;
} else if (lv_is_thin_volume(lv)) {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_THIN]))
goto_bad;
if (lv_is_thin_origin(lv, &snap_count) &&
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_ORIGIN]))
goto_bad;
if (snap_count > 1 &&
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_MULTIPLE]))
goto_bad;
if ((seg = first_seg(lv)) && (seg->origin || seg->external_lv))
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_SNAPSHOT]))
goto_bad;
} else
top_level = 1;
if (!top_level) {
*public_lv = 0;
return 1;
}
if (top_level) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_THIN]))
/* top-level LVs */
if (lv_is_thin_volume(lv)) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_THIN]) ||
!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_SPARSE]))
goto_bad;
} else {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_THIN]))
if (lv_is_thin_origin(lv, &snap_count)) {
if (!str_list_add(mem, role, _lv_type_names[LV_TYPE_ORIGIN]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_THINORIGIN]))
goto_bad;
if (snap_count > 1 &&
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_MULTITHINORIGIN]))
goto_bad;
}
if ((seg = first_seg(lv)) && (seg->origin || seg->external_lv))
if (!str_list_add(mem, role, _lv_type_names[LV_TYPE_SNAPSHOT]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_THINSNAPSHOT]))
goto_bad;
} else if (lv_is_thin_pool(lv)) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_THIN]) ||
!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_POOL]))
goto_bad;
*public_lv = 0;
}
if (lv_is_external_origin(lv)) {
if (!str_list_add(mem, role, _lv_type_names[LV_TYPE_ORIGIN]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_EXTTHINORIGIN]))
goto_bad;
if (lv->external_count > 1 &&
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_MULTIEXTTHINORIGIN]))
goto_bad;
}
@ -313,35 +360,83 @@ bad:
static int _lv_layout_and_role_cache(struct dm_pool *mem,
const struct logical_volume *lv,
struct dm_list *layout,
struct dm_list *role)
struct dm_list *role,
int *public_lv)
{
int top_level = 1;
int top_level = 0;
if (lv_is_cache_pool(lv)) {
/* non-top-level LVs */
if (lv_is_cache_pool_metadata(lv)) {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_CACHE]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_POOL]) ||
!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_POOL]))
goto_bad;
} else if (lv_is_cache_pool_metadata(lv)) {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_POOL]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_METADATA]))
goto_bad;
top_level = 0;
} else if (lv_is_cache_pool_data(lv)) {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_POOL]) ||
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_CACHE]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_POOL]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_DATA]))
goto_bad;
if (lv_is_cache(lv) &&
!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_CACHE]))
goto_bad;
top_level = 0;
} else if (lv_is_cache_origin(lv)) {
if (!str_list_add(mem, role, _lv_type_names[LV_TYPE_CACHE]) ||
!str_list_add(mem, role, _lv_type_names[LV_TYPE_ORIGIN]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_CACHEORIGIN]))
goto_bad;
if (lv_is_cache(lv) &&
!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_CACHE]))
goto_bad;
} else
top_level = 1;
if (!top_level) {
*public_lv = 0;
return 1;
}
if (top_level) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_CACHE]))
/* top-level LVs */
if (lv_is_cache(lv) &&
!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_CACHE]))
goto_bad;
else if (lv_is_cache_pool(lv)) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_CACHE]) ||
!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_POOL]))
goto_bad;
} else {
if (!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_CACHE]))
*public_lv = 0;
}
return 1;
bad:
return 0;
}
static int _lv_layout_and_role_thick_origin_snapshot(struct dm_pool *mem,
const struct logical_volume *lv,
struct dm_list *layout,
struct dm_list *role,
int *public_lv)
{
if (lv_is_origin(lv)) {
if (!str_list_add(mem, role, _lv_type_names[LV_TYPE_ORIGIN]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_THICKORIGIN]))
goto_bad;
/*
* Thin volumes are also marked with virtual flag, but we don't show "virtual"
* layout for thin LVs as they have their own keyword for layout - "thin"!
* So rule thin LVs out here!
*/
if (lv_is_virtual(lv) && !lv_is_thin_volume(lv)) {
if (!str_list_add_no_dup_check(mem, layout, _lv_type_names[LV_TYPE_VIRTUAL]))
goto_bad;
*public_lv = 0;
}
if (lv->origin_count > 1 &&
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_MULTITHICKORIGIN]))
goto_bad;
} else if (lv_is_cow(lv)) {
if (!str_list_add(mem, role, _lv_type_names[LV_TYPE_SNAPSHOT]) ||
!str_list_add_no_dup_check(mem, role, _lv_type_names[LV_TYPE_THICKSNAPSHOT]))
goto_bad;
}
@ -354,6 +449,7 @@ int lv_layout_and_role(struct dm_pool *mem, const struct logical_volume *lv,
struct dm_list **layout, struct dm_list **role) {
int linear, striped, unknown;
struct lv_segment *seg;
int public_lv = 1;
*layout = *role = NULL;
@ -369,62 +465,35 @@ int lv_layout_and_role(struct dm_pool *mem, const struct logical_volume *lv,
/* Mirrors and related */
if (lv_is_mirror_type(lv) && !lv_is_raid(lv) &&
!_lv_layout_and_role_mirror(mem, lv, *layout, *role))
!_lv_layout_and_role_mirror(mem, lv, *layout, *role, &public_lv))
goto_bad;
/* RAIDs and related */
if (lv_is_raid_type(lv) &&
!_lv_layout_and_role_raid(mem, lv, *layout, *role))
!_lv_layout_and_role_raid(mem, lv, *layout, *role, &public_lv))
goto_bad;
/* Thins and related */
if (lv_is_thin_type(lv) &&
!_lv_layout_and_role_thin(mem, lv, *layout, *role))
if ((lv_is_thin_type(lv) || lv_is_external_origin(lv)) &&
!_lv_layout_and_role_thin(mem, lv, *layout, *role, &public_lv))
goto_bad;
if (lv_is_external_origin(lv)) {
if (!str_list_add_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_ORIGIN]) ||
!str_list_add_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_EXTERNAL]))
goto_bad;
if (lv->external_count > 1 &&
!str_list_add_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_MULTIPLE]))
goto_bad;
if (!lv_is_thin_volume(lv) &&
!str_list_add_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_THIN]))
goto_bad;
}
/* Caches and related */
if (lv_is_cache_type(lv) &&
!_lv_layout_and_role_cache(mem, lv, *layout, *role))
if ((lv_is_cache_type(lv) || lv_is_cache_origin(lv)) &&
!_lv_layout_and_role_cache(mem, lv, *layout, *role, &public_lv))
goto_bad;
if (lv_is_cache_origin(lv)) {
if (!str_list_add_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_CACHE]) ||
!str_list_add_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_ORIGIN]))
goto_bad;
}
/* Pool-specific */
if (lv_is_pool_metadata_spare(lv) &&
(!str_list_add_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_POOL]) ||
!str_list_add_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_METADATA]) ||
!str_list_add_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_SPARE])))
goto_bad;
if (lv_is_pool_metadata_spare(lv)) {
if (!str_list_add_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_POOL]) ||
!str_list_add_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_SPARE]))
goto_bad;
public_lv = 0;
}
/* Old-style origins/snapshots, virtual origins */
if (lv_is_origin(lv)) {
str_list_add_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_ORIGIN]);
if (lv_is_virtual(lv) &&
!str_list_add_no_dup_check(mem, *layout, _lv_type_names[LV_TYPE_VIRTUAL]))
goto_bad;
if (lv->origin_count > 1 &&
!str_list_add_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_MULTIPLE]))
goto_bad;
} else if (lv_is_cow(lv)) {
if (!str_list_add_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_SNAPSHOT]))
goto_bad;
}
if (!_lv_layout_and_role_thick_origin_snapshot(mem, lv, *layout, *role, &public_lv))
goto_bad;
/*
* If layout not yet determined, it must be either
@ -465,14 +534,14 @@ int lv_layout_and_role(struct dm_pool *mem, const struct logical_volume *lv,
goto_bad;
}
/*
* If role is not defined here yet, it means this is a pure top-level
* device that is not combined with any other type. So just copy what
* we have set for "layout" and use it for "role" too.
*/
if (dm_list_empty(*role) &&
!str_list_dup(mem, *role, *layout))
goto_bad;
/* finally, add either 'public' or 'private' role to the LV */
if (public_lv) {
if (!str_list_add_h_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_PUBLIC]))
goto_bad;
} else {
if (!str_list_add_h_no_dup_check(mem, *role, _lv_type_names[LV_TYPE_PRIVATE]))
goto_bad;
}
return 1;
bad: