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thin: check and use layered origin lv

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Code needs to check if the layer origin device is suspended,
It's valid to create  thinvolume snapshot of thinvolume which is also
used as an old-style snapshot. In this case we need to check -real
is suspended.

When adding origin_only - add only layer thin volume.
(in case it's also old-snapshot add only -real device)
This commit is contained in:
Zdenek Kabelac 2013-07-15 11:47:10 +02:00
parent 925701d9f3
commit 97d36d5750
3 changed files with 3 additions and 2 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.99 -
===================================
Properly use snapshot layer for origin which is also thin volume.
Avoid generating metadata backup when calling update_pool_lv().
Send thin messages also for active thin pool and inactive thin volume.
Add activation/auto_set_activation_skip to control activation skip flagging.

2
lib/activate/dev_manager.c
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@ -1681,7 +1681,7 @@ static int _add_lv_to_dtree(struct dev_manager *dm, struct dm_tree *dtree,
return_0;
if (origin_only && lv_is_thin_volume(lv)) {
if (!_add_dev_to_dtree(dm, dtree, lv, NULL))
if (!_add_dev_to_dtree(dm, dtree, lv, lv_layer(lv)))
return_0;
#if 0
/* ? Use origin_only to avoid 'deep' thin pool suspend ? */

2
lib/thin/thin.c
View File

@ -298,7 +298,7 @@ static int _thin_pool_add_target_line(struct dev_manager *dm,
case DM_THIN_MESSAGE_CREATE_THIN:
origin = first_seg(lmsg->u.lv)->origin;
/* Check if the origin is suspended */
if (origin && lv_info(cmd, origin, 0, &info, 0, 0) &&
if (origin && lv_info(cmd, origin, 1, &info, 0, 0) &&
info.exists && !info.suspended) {
/* Origin is not suspended, but the transaction may have been
* already transfered, so test for transaction_id and