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mds: skip inode that is being puring when opening snap past parent

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we can not increase reference count of purging inodes. purging
inodes have no snapshots, so it's OK to skip them.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
This commit is contained in:
Yan, Zheng 2015-03-17 20:31:14 +08:00
parent 0dfab5d639
commit 2395ee1b24
1 changed files with 7 additions and 2 deletions
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9
src/mds/SnapRealm.cc
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@ -115,8 +115,7 @@ bool SnapRealm::_open_parents(MDSInternalContextBase *finish, snapid_t first, sn
assert(srnode.past_parents.size() >= open_past_parents.size());
if (srnode.past_parents.size() > open_past_parents.size()) {
for (map<snapid_t, snaplink_t>::iterator p = srnode.past_parents.begin();
p != srnode.past_parents.end();
++p) {
p != srnode.past_parents.end(); ) {
dout(10) << " past_parent [" << p->second.first << "," << p->first << "] is "
<< p->second.ino << dendl;
CInode *parent = mdcache->get_inode(p->second.ino);
@ -126,12 +125,18 @@ bool SnapRealm::_open_parents(MDSInternalContextBase *finish, snapid_t first, sn
mdcache->open_ino(p->second.ino, mdcache->mds->mdsmap->get_metadata_pool(), fin);
return false;
}
if (parent->state_test(CInode::STATE_PURGING)) {
dout(10) << " skip purging past_parent " << *parent << dendl;
srnode.past_parents.erase(p++);
continue;
}
assert(parent->snaprealm); // hmm!
if (!parent->snaprealm->_open_parents(finish, p->second.first, p->first))
return false;
if (!open_past_parents.count(p->second.ino)) {
add_open_past_parent(parent->snaprealm);
}
++p;
}
}