v16dev: TRAP: failed Assert("size > SizeOfXLogRecord"), File: "xlog.c", Line: 1055, PID: 13564

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От Justin Pryzby
Тема v16dev: TRAP: failed Assert("size > SizeOfXLogRecord"), File: "xlog.c", Line: 1055, PID: 13564
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Msg-id ZD1daibg4RF50IOj@telsasoft.com
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Ответы Re: v16dev: TRAP: failed Assert("size > SizeOfXLogRecord"), File: "xlog.c", Line: 1055, PID: 13564  (Tom Lane <tgl@sss.pgh.pa.us>)
Re: v16dev: TRAP: failed Assert("size > SizeOfXLogRecord"), File: "xlog.c", Line: 1055, PID: 13564  (Matthias van de Meent <boekewurm+postgres@gmail.com>)
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I hit this assertion while pg_restoring data into a v16 instance.
postgresql16-server-16-alpha_20230417_PGDG.rhel7.x86_64

wal_level=minimal and pg_dump --single-transaction both seem to be
required to hit the issue.

$ /usr/pgsql-16/bin/postgres -D ./pg16test -c maintenance_work_mem=1GB -c max_wal_size=16GB -c wal_level=minimal -c
max_wal_senders=0-c port=5678 -c logging_collector=no &
 

$ time sudo -u postgres /usr/pgsql-16/bin/pg_restore -d postgres -p 5678 --single-transaction --no-tablespace
./curtables

TRAP: failed Assert("size > SizeOfXLogRecord"), File: "xlog.c", Line: 1055, PID: 13564

Core was generated by `postgres: postgres postgres [local] COMMIT                                    '.
Program terminated with signal 6, Aborted.
#0  0x00007f28b8bd5387 in raise () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install postgresql16-server-16-alpha_20230417_PGDG.rhel7.x86_64
(gdb) bt
#0  0x00007f28b8bd5387 in raise () from /lib64/libc.so.6
#1  0x00007f28b8bd6a78 in abort () from /lib64/libc.so.6
#2  0x00000000009bc8c9 in ExceptionalCondition (conditionName=conditionName@entry=0xa373e1 "size > SizeOfXLogRecord",
fileName=fileName@entry=0xa31b13"xlog.c", lineNumber=lineNumber@entry=1055) at assert.c:66
 
#3  0x000000000057b049 in ReserveXLogInsertLocation (PrevPtr=0x2e3d750, EndPos=<synthetic pointer>, StartPos=<synthetic
pointer>,size=24) at xlog.c:1055
 
#4  XLogInsertRecord (rdata=rdata@entry=0xf187a0 <hdr_rdt>, fpw_lsn=fpw_lsn@entry=0, flags=<optimized out>,
num_fpi=num_fpi@entry=0,topxid_included=topxid_included@entry=false) at xlog.c:844
 
#5  0x000000000058210c in XLogInsert (rmid=rmid@entry=0 '\000', info=info@entry=176 '\260') at xloginsert.c:510
#6  0x0000000000582b09 in log_newpage_range (rel=rel@entry=0x2e1f628, forknum=forknum@entry=FSM_FORKNUM,
startblk=startblk@entry=0,endblk=endblk@entry=3, page_std=page_std@entry=false) at xloginsert.c:1317
 
#7  0x00000000005d02f9 in smgrDoPendingSyncs (isCommit=isCommit@entry=true,
isParallelWorker=isParallelWorker@entry=false)at storage.c:837
 
#8  0x0000000000571637 in CommitTransaction () at xact.c:2225
#9  0x0000000000572b25 in CommitTransactionCommand () at xact.c:3201
#10 0x000000000086afc7 in finish_xact_command () at postgres.c:2782
#11 0x000000000086d7e1 in exec_simple_query (query_string=0x2dec4f8 "COMMIT") at postgres.c:1307



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