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activate: add lv_layer function

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Add function to return layer name for LV.
This commit is contained in:
Zdenek Kabelac 2013-02-01 11:09:34 +01:00
parent 4f439707fd
commit ca7abbce8a
4 changed files with 16 additions and 10 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.99 -
===================================
Add internal function lv_layer() to obtain layer name for LV.
Report partial and in-sync RAID attribute based on kernel status
Fix blkdeactivate to handle nested mountpoints and mangled mount paths.
Set locales with LC_ALL instead of lower priority LANG variable.

14
lib/activate/activate.c
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@ -604,7 +604,6 @@ int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, int use_la
struct lvinfo *info, int with_open_count, int with_read_ahead)
{
struct dm_info dminfo;
const char *layer;
if (!activation())
return 0;
@ -621,15 +620,10 @@ int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, int use_la
fs_unlock(); /* For non clustered - wait if there are non-delete ops */
}
if (use_layer && lv_is_thin_pool(lv))
layer = "tpool";
else if (use_layer && lv_is_origin(lv))
layer = "real";
else
layer = NULL;
if (!dev_manager_info(lv->vg->cmd->mem, lv, layer, with_open_count,
with_read_ahead, &dminfo, &info->read_ahead))
if (!dev_manager_info(lv->vg->cmd->mem, lv,
(use_layer) ? lv_layer(lv) : NULL,
with_open_count, with_read_ahead,
&dminfo, &info->read_ahead))
return_0;
info->exists = dminfo.exists;

10
lib/metadata/lv.c
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@ -225,6 +225,16 @@ char *lv_metadata_lv_dup(struct dm_pool *mem, const struct logical_volume *lv)
dm_pool_strdup(mem, first_seg(lv)->metadata_lv->name) : NULL;
}
const char *lv_layer(const struct logical_volume *lv)
{
if (lv_is_thin_pool(lv))
return "tpool";
else if (lv_is_origin(lv))
return "real";
return NULL;
}
int lv_kernel_minor(const struct logical_volume *lv)
{
struct lvinfo info;

1
lib/metadata/lv.h
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@ -82,4 +82,5 @@ char *lv_time_dup(struct dm_pool *mem, const struct logical_volume *lv);
char *lv_host_dup(struct dm_pool *mem, const struct logical_volume *lv);
int lv_set_creation(struct logical_volume *lv,
const char *hostname, uint64_t timestamp);
const char *lv_layer(const struct logical_volume *lv);
#endif /* _LVM_LV_H */