Description of problem:

Standby MDS Crash when scrubbing with it.

Version-Release number of selected component (if applicable):

18.2.1-196.el9cp

How reproducible:


Steps to Reproduce:
1. standby set to true
2. max_mds to 1
3. get the standby mds
4. run scrub with the standby mds

Actual results:

2024-06-27 00:26:57,755 (cephci.cephfs_bugs.scrub_replay) [INFO] - cephci.cephci.tests.cephfs.cephfs_bugs.scrub_replay.py:84 - scrub result:{
    "return_code": 0,
    "scrub_tag": "9d65189a-1b73-478c-8503-0125557d96a3",
    "mode": "asynchronous"
}

it did allow the standby mds run scrubbing

Expected results:

it should not let it run

Additional info:


ceph version 18.2.1-196.el9cp (9837cda65eab52427ad7599909a70007ef0a72aa) reef (stable)
 1: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x12e) [0x7f092cf4d076]
 2: /usr/lib64/ceph/libceph-common.so.2(+0x163234) [0x7f092cf4d234]
 3: (MDLog::_submit_entry(LogEvent*, MDSLogContextBase*)+0x40) [0x556e1d800a50]
 4: /usr/bin/ceph-mds(+0x1bd19e) [0x556e1d5a519e]
 5: (Locker::scatter_writebehind(ScatterLock*)+0x563) [0x556e1d710373]
 6: (Locker::_drop_locks(MutationImpl*, std::set<CInode*, std::less<CInode*>, std::allocator<CInode*> >*, bool)+0x62f) [0x556e1d6ea91f]
 7: (Locker::drop_locks(MutationImpl*, std::set<CInode*, std::less<CInode*>, std::allocator<CInode*> >*)+0x81) [0x556e1d6eaa41]
 8: (MDCache::request_cleanup(boost::intrusive_ptr<MDRequestImpl> const&)+0x21a) [0x556e1d6a250a]
 9: (Server::respond_to_request(boost::intrusive_ptr<MDRequestImpl> const&, int)+0x11b) [0x556e1d5bc13b]
 10: (MDCache::rdlock_dirfrags_stats_work(boost::intrusive_ptr<MDRequestImpl> const&)+0x1f1) [0x556e1d6ba111]
 11: (MDCache::rdlock_dirfrags_stats(CInode*, MDSInternalContext*)+0x6d) [0x556e1d6ba3bd]
 12: /usr/bin/ceph-mds(+0x3c75e6) [0x556e1d7af5e6]
 13: /usr/bin/ceph-mds(+0x399936) [0x556e1d781936]
 14: /usr/bin/ceph-mds(+0x399a24) [0x556e1d781a24]
 15: /usr/bin/ceph-mds(+0x1434ad) [0x556e1d52b4ad]
 16: (MDSContext::complete(int)+0x5c) [0x556e1d7f2adc]
 17: (CInode::_fetched(ceph::buffer::v15_2_0::list&, ceph::buffer::v15_2_0::list&, Context*)+0x43b) [0x556e1d7914ab]
 18: (MDSContext::complete(int)+0x5c) [0x556e1d7f2adc]
 19: (MDSIOContextBase::complete(int)+0x31c) [0x556e1d7f2f2c]
 20: (Finisher::finisher_thread_entry()+0x175) [0x7f092d0052a5]
 21: /lib64/libc.so.6(+0x89c02) [0x7f092c903c02]
 22: /lib64/libc.so.6(+0x10ec40) [0x7f092c988c40]