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cache: fix lvdisplay --maps

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'lvdisplay -m' tried to go through NULL policy settings,
when such policy was not defined for CachedLV.

Patch is fixing display of cache-pool without defined settings,
as this is now a valid pool and we mostly want users to define
these settings when actually really caching a LV.
This commit is contained in:
Zdenek Kabelac 2017-06-22 19:53:27 +02:00
parent 58a9f88b8c
commit 732928dda8
2 changed files with 3 additions and 1 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.172 -
===============================
Fix lvdisplay --maps for cache pool without policy settings.
Avoid using origin_only manipulation with cached device.
Support aborting of flushing cache LV.
Reenable conversion of data and metadata thin-pool volumes to raid.

3
lib/cache_segtype/cache.c
View File

@ -55,7 +55,8 @@ static void _cache_display(const struct lv_segment *seg)
log_print(" Mode\t\t%s", get_cache_mode_name(pool_seg));
log_print(" Policy\t\t%s", pool_seg->policy_name);
if ((n = pool_seg->policy_settings->child))
if (pool_seg->policy_settings &&
(n = pool_seg->policy_settings->child))
dm_config_write_node(n, _cache_out_line, NULL);
log_print(" ");