Re: MDS fails to start with error PurgeQueue.cc: 286: FAILED ceph_assert(readable)

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Hi,

I don’t know what could cause that error, but could you share more details? You seem to have multiple active MDSs, is that correct? Could they be overloaded? What happened exactly, did one MDS fail or all of them? Do the standby MDS report anything different?

Zitat von Kuko Armas <kuko@xxxxxxxxxxxxx>:

Hello, I've been having problems with my MDS and they got stuck in up:reply state The journal was ok and everything seemed ok, so I reset the journal and now all MDS fail to start with the following error:

2022-05-18 12:27:40.092 7f8748561700 -1 /home/abuild/rpmbuild/BUILD/ceph-14.2.16-402-g7d47dbaf4d/src/mds/PurgeQueue.cc: In function 'void PurgeQueue::_recover()' thread 7f8748561700 time 2022-05-18 12:27:40.094406 /home/abuild/rpmbuild/BUILD/ceph-14.2.16-402-g7d47dbaf4d/src/mds/PurgeQueue.cc: 286: FAILED ceph_assert(readable)

ceph version 14.2.16-402-g7d47dbaf4d (7d47dbaf4d0960a2e910628360ae36def84ed913) nautilus (stable) 1: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x152) [0x7f8756ca91a6] 2: (ceph::__ceph_assertf_fail(char const*, char const*, int, char const*, char const*, ...)+0) [0x7f8756ca9381]
 3: (PurgeQueue::_recover()+0x4ad) [0x55f1666ad26d]
 4: (()+0x2b0353) [0x55f1666ad353]
 5: (FunctionContext::finish(int)+0x2c) [0x55f16652b63c]
 6: (Context::complete(int)+0x9) [0x55f166529339]
 7: (Finisher::finisher_thread_entry()+0x15e) [0x7f8756cf231e]
 8: (()+0x84f9) [0x7f87565a64f9]
 9: (clone()+0x3f) [0x7f87557affbf]

2022-05-18 12:27:40.092 7f8748561700 -1 *** Caught signal (Aborted) **
 in thread 7f8748561700 thread_name:PQ_Finisher

ceph version 14.2.16-402-g7d47dbaf4d (7d47dbaf4d0960a2e910628360ae36def84ed913) nautilus (stable)

 Its a production cluster, so it's fairly urgent

Salu2!
--
Miguel Armas
CanaryTek Consultoria y Sistemas SL
http://www.canarytek.com/

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