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mds: trigger to flush the mdlog in handle_find_ino()

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If the the CInode was just created by using openc in current
auth MDS, but the client just sends a getattr request to another
replica MDS. Then here it will make a path of '#INODE-NUMBER'
only because the CInode hasn't been linked yet, and the replica
MDS will keep retrying until the auth MDS flushes the mdlog and
the C_MDS_openc_finish and link_primary_inode are called at most
5 seconds later.

Fixes: https://tracker.ceph.com/issues/55240
Signed-off-by: Xiubo Li <xiubli@redhat.com>
This commit is contained in:
Xiubo Li 2022-04-19 14:21:49 +08:00
parent f6d1cb6e30
commit 5d6dd5d1ac
1 changed files with 13 additions and 0 deletions
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13
src/mds/MDCache.cc
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@ -9484,6 +9484,19 @@ void MDCache::handle_find_ino(const cref_t<MMDSFindIno> &m)
if (in) {
in->make_path(r->path);
dout(10) << " have " << r->path << " " << *in << dendl;
/*
* If the the CInode was just created by using openc in current
* auth MDS, but the client just sends a getattr request to another
* replica MDS. Then here it will make a path of '#INODE-NUMBER'
* only because the CInode hasn't been linked yet, and the replica
* MDS will keep retrying until the auth MDS flushes the mdlog and
* the C_MDS_openc_finish and link_primary_inode are called at most
* 5 seconds later.
*/
if (!in->get_parent_dn() && in->is_auth()) {
mds->mdlog->flush();
}
}
mds->send_message_mds(r, mds_rank_t(m->get_source().num()));
}