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report: use brackets to signify LVs which are not visible when reporting lv_parent

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Use common _lvname_disp to report lv_parent. The _lvname_disp
takes care of properly marking LVs which are not visible - such
LVs are always enclosed in brackets when reported within any
other field.

For example, thin pool over RAID.

Before:

$ lvs -a -o name,lv_parent,data_lv,metadata_lv vg
  LV                          Parent           Data               Meta
  cache_pool                                   [cache_pool_tdata] [cache_pool_tmeta]
  [cache_pool_tdata]          cache_pool
  [cache_pool_tdata_rimage_0] cache_pool_tdata
  [cache_pool_tdata_rimage_1] cache_pool_tdata
  [cache_pool_tdata_rmeta_0]  cache_pool_tdata
  [cache_pool_tdata_rmeta_1]  cache_pool_tdata
  [cache_pool_tmeta]          cache_pool
  [cache_pool_tmeta_rimage_0] cache_pool_tmeta
  [cache_pool_tmeta_rimage_1] cache_pool_tmeta
  [cache_pool_tmeta_rmeta_0]  cache_pool_tmeta
  [cache_pool_tmeta_rmeta_1]  cache_pool_tmeta
  [lvol0_pmspare]

With this patch applied:

$ lvs -a -o name,lv_parent,data_lv,metadata_lv vg
  LV                          Parent             Data               Meta
  cache_pool                                     [cache_pool_tdata] [cache_pool_tmeta]
  [cache_pool_tdata]          cache_pool
  [cache_pool_tdata_rimage_0] [cache_pool_tdata]
  [cache_pool_tdata_rimage_1] [cache_pool_tdata]
  [cache_pool_tdata_rmeta_0]  [cache_pool_tdata]
  [cache_pool_tdata_rmeta_1]  [cache_pool_tdata]
  [cache_pool_tmeta]          cache_pool
  [cache_pool_tmeta_rimage_0] [cache_pool_tmeta]
  [cache_pool_tmeta_rimage_1] [cache_pool_tmeta]
  [cache_pool_tmeta_rmeta_0]  [cache_pool_tmeta]
  [cache_pool_tmeta_rmeta_1]  [cache_pool_tmeta]
  [lvol0_pmspare]
This commit is contained in:
Peter Rajnoha 2016-01-11 15:34:35 +01:00
parent f03a21f5b8
commit d6cf83968c
2 changed files with 6 additions and 5 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.140 -
===================================
Use brackets to signify LVs which are not visible when reporting lv_parent.
Fix invalid memory read when reporting cache LV policy_name (2.02.126).
Version 2.02.139 - 8th January 2016

10
lib/report/report.c
View File

@ -1655,15 +1655,15 @@ static int _lvfullname_disp(struct dm_report *rh, struct dm_pool *mem,
static int _lvparent_disp(struct dm_report *rh, struct dm_pool *mem,
struct dm_report_field *field,
const void *data, void *private __attribute__((unused)))
const void *data, void *private)
{
const struct logical_volume *lv = (const struct logical_volume *) data;
char *repstr;
struct logical_volume *parent_lv = lv_parent(lv);
if (!(repstr = lv_parent_dup(mem, lv)))
return_0;
if (!parent_lv)
return _field_set_value(field, "", NULL);
return _field_set_value(field, repstr, NULL);
return _lvname_disp(rh, mem, field, parent_lv, private);
}
static int _do_datalv_disp(struct dm_report *rh, struct dm_pool *mem __attribute__((unused)),