Bug #4741
closed
MDS: stuck in clientreplay
Added by Greg Farnum about 11 years ago.
Updated almost 8 years ago.
Description
/a/teuthology-2013-04-17_01:00:56-fs-master-testing-basic/14249
I can't find any hints, except that it is in fact asking to stay in clientreplay
Also /a/teuthology-2013-04-18_01:01:07-fs-next-testing-basic/15101
- Status changed from New to Duplicate
This is a duplicate of #4742. It looks like setattr is the culprit. I was able to generate a core file of the mds while it was in this state, and the only request sitting in mds->mdcache->active_requests is the setattr which the client is waiting for (and already has an unsafe reply to). I have the dump of the mds cache as well, all that it shows for the inode the setattr is operating on is that its dirty.
Interesting; on #4742 it was clearly waiting on a request because it kept saying "still have 1 active replay requests" as soon as I turned on logging, whereas these two didn't. That log line is output from MDS::_dispatch() so I guess maybe #4742 got another request that kept retrying, whereas these ones didn't? Or perhaps something else which I can't guess the significance of.
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