Bug 2272983

Summary:	mds: ensure snapclient is synced before corruption check
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Patrick Donnelly <pdonnell>
Component:	CephFS	Assignee:	Patrick Donnelly <pdonnell>
Status:	CLOSED ERRATA	QA Contact:	Hemanth Kumar <hyelloji>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	6.1	CC:	ceph-eng-bugs, cephqe-warriors, mcaldeir, rpollack, tserlin
Target Milestone:	---
Target Release:	6.1z7
Hardware:	All
OS:	All
Whiteboard:
Fixed In Version:	ceph-17.2.6-227.el9cp	Doc Type:	Bug Fix
Doc Text:	Previously, some metadata was marked as corrupted because the state tests for the file system snap systems were incorrect. Due to this, the MDS wrongly indicated some metadata is damaged. With this fix, the state tests for the file system snap systems have been corrected and the MDS no longer indicates the correct metadata as corrupt.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2024-08-28 17:58:44 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2272979, 2272981
Bug Blocks:

Description Patrick Donnelly 2024-04-03 14:30:30 UTC

This bug was initially created as a copy of Bug #2272981

I am copying this bug because: 

6.1z backport

This bug was initially created as a copy of Bug #2272979

I am copying this bug because: 

7.0z backport

Description of problem:

See: https://tracker.ceph.com/issues/64058

Comment 3 Manny 2024-06-04 15:57:40 UTC

Crash signature:

~~~
2024-04-28T13:25:34.748+0000 7fedc6158700 -1 mds.4.cache.den(0x1 volumes) newly corrupt dentry to be committed: [dentry #0x1/volumes [2,head] rep@-2,-2.0 (dversion lock) v=0 ino=0x10000000000 state=0 | inodepin=1 0x55ff14692000]
2024-04-28T13:25:34.748+0000 7fedc6158700 -1 log_channel(cluster) log [ERR] : MDS abort because newly corrupt dentry to be committed: [dentry #0x1/volumes [2,head] rep@-2,-2.0 (dversion lock) v=0 ino=0x10000000000 state=0 | inodepin=1 0x55ff14692000]
2024-04-28T13:25:34.751+0000 7fedc6158700 -1 /builddir/build/BUILD/ceph-16.2.10/src/mds/CDentry.cc: In function 'bool CDentry::check_corruption(bool)' thread 7fedc6158700 time 2024-04-28T13:25:34.750059+0000
/builddir/build/BUILD/ceph-16.2.10/src/mds/CDentry.cc: 699: ceph_abort_msg("abort() called")

 ceph version 16.2.10-187.el8cp (5d6355e2bccd18b5c6457a34cb666d773f21823d) pacific (stable)
 1: (ceph::__ceph_abort(char const*, int, char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)+0xe5) [0x7fedceda6c74]
 2: (CDentry::check_corruption(bool)+0x456) [0x55ff0dfe98a6]
 3: (EMetaBlob::add_dir_context(CDir*, int)+0x241) [0x55ff0e132931]
 4: (MDCache::create_subtree_map()+0x1acd) [0x55ff0defef0d]
 5: (MDLog::_journal_segment_subtree_map(MDSContext*)+0x126) [0x55ff0e0c35d6]
 6: (MDLog::_submit_entry(LogEvent*, MDSLogContextBase*)+0x358) [0x55ff0e0c3a28]
 7: (Server::journal_close_session(Session*, int, Context*)+0x78c) [0x55ff0dded24c]
 8: (Server::kill_session(Session*, Context*)+0x212) [0x55ff0dded9a2]
 9: (Server::apply_blocklist()+0x10d) [0x55ff0ddedc5d]
 10: (MDSRank::apply_blocklist(std::set<entity_addr_t, std::less<entity_addr_t>, std::allocator<entity_addr_t> > const&, unsigned int)+0x34) [0x55ff0dda9824]
 11: (MDSRankDispatcher::handle_osd_map()+0x122) [0x55ff0dda9b92]
 12: (MDSDaemon::handle_core_message(boost::intrusive_ptr<Message const> const&)+0x33b) [0x55ff0dd93b8b]
 13: (MDSDaemon::ms_dispatch2(boost::intrusive_ptr<Message> const&)+0xc3) [0x55ff0dd94473]
 14: (DispatchQueue::entry()+0x126a) [0x7fedcefef8da]
 15: (DispatchQueue::DispatchThread::entry()+0x11) [0x7fedcf0a2e21]
 16: /lib64/libpthread.so.0(+0x81ca) [0x7fedcdd851ca]
 17: clone()

2024-04-28T13:25:34.753+0000 7fedc6158700 -1 *** Caught signal (Aborted) **
 in thread 7fedc6158700 thread_name:ms_dispatch

 ceph version 16.2.10-187.el8cp (5d6355e2bccd18b5c6457a34cb666d773f21823d) pacific (stable)
 1: /lib64/libpthread.so.0(+0x12cf0) [0x7fedcdd8fcf0]
 2: gsignal()
 3: abort()
 4: (ceph::__ceph_abort(char const*, int, char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)+0x1b6) [0x7fedceda6d45]
 5: (CDentry::check_corruption(bool)+0x456) [0x55ff0dfe98a6]
 6: (EMetaBlob::add_dir_context(CDir*, int)+0x241) [0x55ff0e132931]
 7: (MDCache::create_subtree_map()+0x1acd) [0x55ff0defef0d]
 8: (MDLog::_journal_segment_subtree_map(MDSContext*)+0x126) [0x55ff0e0c35d6]
 9: (MDLog::_submit_entry(LogEvent*, MDSLogContextBase*)+0x358) [0x55ff0e0c3a28]
 10: (Server::journal_close_session(Session*, int, Context*)+0x78c) [0x55ff0dded24c]
 11: (Server::kill_session(Session*, Context*)+0x212) [0x55ff0dded9a2]
 12: (Server::apply_blocklist()+0x10d) [0x55ff0ddedc5d]
 13: (MDSRank::apply_blocklist(std::set<entity_addr_t, std::less<entity_addr_t>, std::allocator<entity_addr_t> > const&, unsigned int)+0x34) [0x55ff0dda9824]
 14: (MDSRankDispatcher::handle_osd_map()+0x122) [0x55ff0dda9b92]
 15: (MDSDaemon::handle_core_message(boost::intrusive_ptr<Message const> const&)+0x33b) [0x55ff0dd93b8b]
 16: (MDSDaemon::ms_dispatch2(boost::intrusive_ptr<Message> const&)+0xc3) [0x55ff0dd94473]
 17: (DispatchQueue::entry()+0x126a) [0x7fedcefef8da]
 18: (DispatchQueue::DispatchThread::entry()+0x11) [0x7fedcf0a2e21]
 19: /lib64/libpthread.so.0(+0x81ca) [0x7fedcdd851ca]
 20: clone()
 NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.
~~~

See also Knowledge  (https://access.redhat.com/solutions/7073314)

BR
Manny

Comment 12 errata-xmlrpc 2024-08-28 17:58:44 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Red Hat Ceph Storage 6.1 security, bug fix, and enhancement updates.), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2024:5960