pacific: mds: wait reintegrate to finish when unlinking #51686
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Fixes: https://tracker.ceph.com/issues/58340 Signed-off-by: Xiubo Li <xiubli@redhat.com> (cherry picked from commit 478db14)
This will allow the MDS could handle the MClientReply requests. Fixes: https://tracker.ceph.com/issues/58340 Signed-off-by: Xiubo Li <xiubli@redhat.com> (cherry picked from commit 4e03934)
When unlinking a remote dentry while primary dentry has been just unlinked and was trying to reintegrate, which will finally be a RENAME client request to current MDS, the stray dentry. If the RENAME request is sleeping and waiting for some resources just after authpin the CInode, so the unlinking request will mark the remote dentry as UNLINKING state and then add itself to the wait list just waiting for the CInode to be authpined. Then after the RENAME request is retried later it will add to a wait list again and waiting for the UNLINKING state to be cleared. And finally the RENAME and UNLINK requests will be deadlock. This fix will block the UNLINK request if the reintegrate_stray is going on for current dentry. Fixes: https://tracker.ceph.com/issues/58340 Signed-off-by: Xiubo Li <xiubli@redhat.com> (cherry picked from commit c3b3672)
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@lxbsz this is ready for merge |
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backport tracker: https://tracker.ceph.com/issues/61346
backport of #49553
parent tracker: https://tracker.ceph.com/issues/58340
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