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librbd: CoR should copyup empty object to prevent future CoR attempts

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Signed-off-by: Jason Dillaman <dillaman@redhat.com>
This commit is contained in:
Jason Dillaman 2015-05-21 16:25:37 -04:00
parent 0766734a24
commit 1e0f128356
1 changed files with 4 additions and 5 deletions
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9
src/librbd/CopyupRequest.cc
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@ -104,8 +104,9 @@ private:
bool add_copyup_op = !m_copyup_data.is_zero();
bool copy_on_read = m_pending_requests.empty();
if (!add_copyup_op && copy_on_read) {
// no copyup data and CoR operation
return true;
// copyup empty object to prevent future CoR attempts
m_copyup_data.clear();
add_copyup_op = true;
}
ldout(m_ictx->cct, 20) << __func__ << " " << this
@ -220,10 +221,8 @@ private:
case STATE_READ_FROM_PARENT:
ldout(cct, 20) << "READ_FROM_PARENT" << dendl;
remove_from_list();
if (r >= 0) {
if (r >= 0 || r == -ENOENT) {
return send_object_map();
} else if (r == -ENOENT) {
return send_copyup();
}
break;