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thin: fix condition for kernels without discards

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Report warning if the kernel is not support given discards settings.
(In this case the behavior is equal to IGNORE.)
This commit is contained in:
Zdenek Kabelac 2012-08-09 11:25:41 +02:00
parent 1f1c664b78
commit b8a6efbcc0
2 changed files with 3 additions and 2 deletions
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1
WHATS_NEW
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@ -1,6 +1,7 @@
Version 2.02.98
=================================
Use 'ignore' discards for thin metadata created with older versions.
Use proper condition to check for unsupported discards settings.
Version 2.02.97 - 7th August 2012
=================================

4
lib/thin/thin.c
View File

@ -276,13 +276,13 @@ static int _thin_pool_add_target_line(struct dev_manager *dm,
seg->zero_new_blocks ? 0 : 1))
return_0;
if ((seg->discards != THIN_DISCARDS_PASSDOWN) && (attr & THIN_FEATURE_DISCARDS)) {
if (attr & THIN_FEATURE_DISCARDS) {
/* FIXME: Check whether underlying dev supports discards */
if (!dm_tree_node_set_thin_pool_discard(node,
seg->discards == THIN_DISCARDS_IGNORE,
seg->discards == THIN_DISCARDS_NO_PASSDOWN))
return_0;
} else
} else if (seg->discards != THIN_DISCARDS_IGNORE)
log_warn_suppress(_no_discards++, "WARNING: Thin pool target does "
"not support discards (needs kernel >= 3.4).");