Re: Orphaned locks in 7.0?
От | Alfred Perlstein |
---|---|
Тема | Re: Orphaned locks in 7.0? |
Дата | |
Msg-id | 20000511114659.K4889@fw.wintelcom.net обсуждение исходный текст |
Ответ на | Re: Orphaned locks in 7.0? (Tom Lane <tgl@sss.pgh.pa.us>) |
Список | pgsql-hackers |
* Tom Lane <tgl@sss.pgh.pa.us> [000511 11:26] wrote: > Alfred Perlstein <bright@wintelcom.net> writes: > > Argh! I can't reproduce this: > > Was a core file left behind? Can you get a backtrace from it? I enabled assertion checking and debug, here we go: Core was generated by `postgres'. Program terminated with signal 6, Abort trap. Reading symbols from /usr/lib/libcrypt.so.2...done. Reading symbols from /usr/lib/libm.so.2...done. Reading symbols from /usr/lib/libreadline.so.4...done. Reading symbols from /usr/lib/libncurses.so.5...done. Reading symbols from /usr/lib/libc.so.4...done. Reading symbols from /usr/libexec/ld-elf.so.1...done. #0 0x48281fd8 in kill () from /usr/lib/libc.so.4 (gdb) bt #0 0x48281fd8 in kill () from /usr/lib/libc.so.4 #1 0x482bb4a2 in abort () from /usr/lib/libc.so.4 #2 0x8143c53 in ExcAbort () at excabort.c:27 #3 0x8143bd2 in ExcUnCaught (excP=0x81a5708, detail=0, data=0x0, message=0x8189040 "!((result->nHolding > 0) && (result->holders[lockmode]>= 0))") at exc.c:170 #4 0x8143c19 in ExcRaise (excP=0x81a5708, detail=0, data=0x0, message=0x8189040 "!((result->nHolding > 0) && (result->holders[lockmode]>= 0))") at exc.c:187 #5 0x8143308 in ExceptionalCondition ( conditionName=0x8189040 "!((result->nHolding > 0) && (result->holders[lockmode]>= 0))", exceptionP=0x81a5708, detail=0x0, fileName=0x8188e0c "lock.c", lineNumber=617) at assert.c:73 #6 0x810422e in LockAcquire (lockmethod=1, locktag=0xbfbfe808, lockmode=1) at lock.c:617 #7 0x81036d1 in LockRelation (relation=0x8471ba0, lockmode=1) at lmgr.c:148 #8 0x8071957 in heap_open (relationId=1249, lockmode=1) at heapam.c:551 #9 0x813e329 in SearchSysCache (cache=0x847c018, v1=8490746, v2=136106584, v3=0, v4=0) at catcache.c:1009 #10 0x8142210 in SearchSysCacheTuple (cacheId=4, key1=8490746, key2=136106584, key3=0, key4=0) at syscache.c:532 #11 0x80cfc5d in make_var (pstate=0x81cd020, relid=8490746, refname=0x81cd180 "data", attrname=0x81cd258 "referer") atparse_node.c:202 #12 0x80d12be in expandAll (pstate=0x81cd020, relname=0x81cd180 "data", ref=0x81cd158, this_resno=0x81cd020) at parse_relation.c:408 #13 0x80d25b8 in ExpandAllTables (pstate=0x81cd020) at parse_target.c:444 #14 0x80d213b in transformTargetList (pstate=0x81cd020, targetlist=0x81ccea8) at parse_target.c:139 #15 0x80c0ef6 in transformSelectStmt (pstate=0x81cd020, stmt=0x81ccf50) at analyze.c:1423 #16 0x80bf780 in transformStmt (pstate=0x81cd020, parseTree=0x81ccf50) at analyze.c:238 #17 0x80bf3c2 in parse_analyze (pl=0x81cd008, parentParseState=0x0) at analyze.c:75 #18 0x80cafa1 in parser (str=0x8469018 "select * from data;", typev=0x0, nargs=0) at parser.c:64 #19 0x8109923 in pg_parse_and_rewrite ( query_string=0x8469018 "select * from data;", typev=0x0, nargs=0, aclOverride=0'\000') at postgres.c:395 #20 0x8109bcb in pg_exec_query_dest ( query_string=0x8469018 "select * from data;", dest=Remote, aclOverride=0) at postgres.c:580 #21 0x8109b91 in pg_exec_query (query_string=0x8469018 "select * from data;") at postgres.c:562 #22 0x810ab4a in PostgresMain (argc=7, argv=0xbfbff138, real_argc=8, real_argv=0xbfbffb98) at postgres.c:1590 #23 0x80f00d6 in DoBackend (port=0x8463000) at postmaster.c:2006 #24 0x80efc7d in BackendStartup (port=0x8463000) at postmaster.c:1775 #25 0x80eeea1 in ServerLoop () at postmaster.c:1035 #26 0x80ee88a in PostmasterMain (argc=8, argv=0xbfbffb98) at postmaster.c:723 #27 0x80bf327 in main (argc=8, argv=0xbfbffb98) at main.c:93 #28 0x80633d5 in _start () (gdb) up #6 0x810422e in LockAcquire (lockmethod=1, locktag=0xbfbfe808, lockmode=1) at lock.c:617 617 Assert((result->nHolding > 0) && (result->holders[lockmode] >= 0)); (gdb) list 612 XID_PRINT("LockAcquire: new", result); 613 } 614 else 615 { 616 XID_PRINT("LockAcquire: found", result); 617 Assert((result->nHolding > 0) && (result->holders[lockmode] >= 0)); 618 Assert(result->nHolding <= lock->nActive); 619 } 620 621 /* ---------------- (gdb) Seems to be what brought things down. If you need anything else, let me know. -- -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] "I have the heart of a child; I keep it in a jar on my desk."
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