Обсуждение: Segmentation fault postgres 9.6
Hi,
I'm trying to insert a few values into a foreign table via sqllite_fdw and my postgresql database crushes :
2018-09-17 12:09:54 UTC 43444 LOG: server process (PID 43831) was terminated by signal 11: Segmentation fault
2018-09-17 12:09:54 UTC 43444 DETAIL: Failed process was running: insert into vip_foreign values (2,2,2);
2018-09-17 12:09:54 UTC 43444 LOG: terminating any other active server processes
2018-09-17 12:09:54 UTC 43451 WARNING: terminating connection because of crash of another server process
2018-09-17 12:09:54 UTC 43451 DETAIL: The postmaster has commanded this server process to roll back the current transaction and exit, because another server process exited abnormally and possibly corrupted shared memory.
2018-09-17 12:09:54 UTC 43451 HINT: In a moment you should be able to reconnect to the database and repeat your command.
2018-09-17 12:09:54 UTC 43444 LOG: archiver process (PID 43452) exited with exit code 1
2018-09-17 12:09:54 UTC 43444 LOG: all server processes terminated; reinitializing
2018-09-17 12:09:54 UTC 43840 LOG: database system was interrupted; last known up at 2018-09-17 12:08:35 UTC
2018-09-17 12:09:56 UTC 43840 LOG: database system was not properly shut down; automatic recovery in progress
2018-09-17 12:09:56 UTC 43840 LOG: redo starts at 0/6000098
2018-09-17 12:09:56 UTC 43840 LOG: invalid record length at 0/60000D0: wanted 24, got 0
2018-09-17 12:09:56 UTC 43840 LOG: redo done at 0/6000098
2018-09-17 12:09:56 UTC 43840 LOG: checkpoint starting: end-of-recovery immediate
2018-09-17 12:09:56 UTC 43840 LOG: checkpoint complete: wrote 0 buffers (0.0%); 0 transaction log file(s) added, 0 removed, 0 recycled; write=0.006 s, sync=0.000 s, total=0.030 s; sync files=0, longest=0.000 s, average=0.000 s; distance=0 kB, estimate=0 kB
2018-09-17 12:09:56 UTC 43840 LOG: MultiXact member wraparound protections are now enabled
2018-09-17 12:09:56 UTC 43444 LOG: database system is ready to accept connections
2018-09-17 12:09:56 UTC 43844 LOG: autovacuum launcher started
any idea how can I investigate if the problem in the wrapper or in the database ?
Mariel Cherkassky <mariel.cherkassky@gmail.com> writes: > I'm trying to insert a few values into a foreign table via sqllite_fdw and > my postgresql database crushes : > ... > any idea how can I investigate if the problem in the wrapper or in the > database ? Get a stack trace: https://wiki.postgresql.org/wiki/Generating_a_stack_trace_of_a_PostgreSQL_backend If the trace shows that the failure occurred in code of the wrapper, I'd definitely blame the wrapper. If sqllite_fdw is nowhere to be seen anywhere in the trace, then it's more debatable. regards, tom lane
Hi Mariel,
it seems kernel shared memory parameter issue which blocking or creating a new process, which requires for data purpose.
Check your kernel shared memory parameters.
On Mon, Sep 17, 2018 at 5:46 PM Mariel Cherkassky <mariel.cherkassky@gmail.com> wrote:
Hi,I'm trying to insert a few values into a foreign table via sqllite_fdw and my postgresql database crushes :2018-09-17 12:09:54 UTC 43444 LOG: server process (PID 43831) was terminated by signal 11: Segmentation fault2018-09-17 12:09:54 UTC 43444 DETAIL: Failed process was running: insert into vip_foreign values (2,2,2);2018-09-17 12:09:54 UTC 43444 LOG: terminating any other active server processes2018-09-17 12:09:54 UTC 43451 WARNING: terminating connection because of crash of another server process2018-09-17 12:09:54 UTC 43451 DETAIL: The postmaster has commanded this server process to roll back the current transaction and exit, because another server process exited abnormally and possibly corrupted shared memory.2018-09-17 12:09:54 UTC 43451 HINT: In a moment you should be able to reconnect to the database and repeat your command.2018-09-17 12:09:54 UTC 43444 LOG: archiver process (PID 43452) exited with exit code 12018-09-17 12:09:54 UTC 43444 LOG: all server processes terminated; reinitializing2018-09-17 12:09:54 UTC 43840 LOG: database system was interrupted; last known up at 2018-09-17 12:08:35 UTC2018-09-17 12:09:56 UTC 43840 LOG: database system was not properly shut down; automatic recovery in progress2018-09-17 12:09:56 UTC 43840 LOG: redo starts at 0/60000982018-09-17 12:09:56 UTC 43840 LOG: invalid record length at 0/60000D0: wanted 24, got 02018-09-17 12:09:56 UTC 43840 LOG: redo done at 0/60000982018-09-17 12:09:56 UTC 43840 LOG: checkpoint starting: end-of-recovery immediate2018-09-17 12:09:56 UTC 43840 LOG: checkpoint complete: wrote 0 buffers (0.0%); 0 transaction log file(s) added, 0 removed, 0 recycled; write=0.006 s, sync=0.000 s, total=0.030 s; sync files=0, longest=0.000 s, average=0.000 s; distance=0 kB, estimate=0 kB2018-09-17 12:09:56 UTC 43840 LOG: MultiXact member wraparound protections are now enabled2018-09-17 12:09:56 UTC 43444 LOG: database system is ready to accept connections2018-09-17 12:09:56 UTC 43844 LOG: autovacuum launcher startedany idea how can I investigate if the problem in the wrapper or in the database ?
How did you determine that? (What line of the log file says it?)
On 09/17/2018 09:04 AM, Shreeyansh Dba wrote:
Hi Mariel,
it seems kernel shared memory parameter issue which blocking or creating a new process, which requires for data purpose.
Check your kernel shared memory parameters.On Mon, Sep 17, 2018 at 5:46 PM Mariel Cherkassky <mariel.cherkassky@gmail.com> wrote:Hi,I'm trying to insert a few values into a foreign table via sqllite_fdw and my postgresql database crushes :2018-09-17 12:09:54 UTC 43444 LOG: server process (PID 43831) was terminated by signal 11: Segmentation fault2018-09-17 12:09:54 UTC 43444 DETAIL: Failed process was running: insert into vip_foreign values (2,2,2);2018-09-17 12:09:54 UTC 43444 LOG: terminating any other active server processes2018-09-17 12:09:54 UTC 43451 WARNING: terminating connection because of crash of another server process2018-09-17 12:09:54 UTC 43451 DETAIL: The postmaster has commanded this server process to roll back the current transaction and exit, because another server process exited abnormally and possibly corrupted shared memory.2018-09-17 12:09:54 UTC 43451 HINT: In a moment you should be able to reconnect to the database and repeat your command.2018-09-17 12:09:54 UTC 43444 LOG: archiver process (PID 43452) exited with exit code 12018-09-17 12:09:54 UTC 43444 LOG: all server processes terminated; reinitializing2018-09-17 12:09:54 UTC 43840 LOG: database system was interrupted; last known up at 2018-09-17 12:08:35 UTC2018-09-17 12:09:56 UTC 43840 LOG: database system was not properly shut down; automatic recovery in progress2018-09-17 12:09:56 UTC 43840 LOG: redo starts at 0/60000982018-09-17 12:09:56 UTC 43840 LOG: invalid record length at 0/60000D0: wanted 24, got 02018-09-17 12:09:56 UTC 43840 LOG: redo done at 0/60000982018-09-17 12:09:56 UTC 43840 LOG: checkpoint starting: end-of-recovery immediate2018-09-17 12:09:56 UTC 43840 LOG: checkpoint complete: wrote 0 buffers (0.0%); 0 transaction log file(s) added, 0 removed, 0 recycled; write=0.006 s, sync=0.000 s, total=0.030 s; sync files=0, longest=0.000 s, average=0.000 s; distance=0 kB, estimate=0 kB2018-09-17 12:09:56 UTC 43840 LOG: MultiXact member wraparound protections are now enabled2018-09-17 12:09:56 UTC 43444 LOG: database system is ready to accept connections2018-09-17 12:09:56 UTC 43844 LOG: autovacuum launcher startedany idea how can I investigate if the problem in the wrapper or in the database ?
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I do have the same problem with a simple select max() from foreign_table where... Syslog said the the mysql fdw lib segfaulted. I've tried to compile the mysql_fdw sources ; but still same problem. ----- Mail original ----- De: "Mariel Cherkassky" <mariel.cherkassky@gmail.com> À: pgsql-admin@lists.postgresql.org Envoyé: Lundi 17 Septembre 2018 14:15:44 Objet: Segmentation fault postgres 9.6 Hi, I'm trying to insert a few values into a foreign table via sqllite_fdw and my postgresql database crushes : 2018-09-17 12:09:54 UTC 43444 LOG: server process (PID 43831) was terminated by signal 11: Segmentation fault 2018-09-17 12:09:54 UTC 43444 DETAIL: Failed process was running: insert into vip_foreign values (2,2,2); 2018-09-17 12:09:54 UTC 43444 LOG: terminating any other active server processes 2018-09-17 12:09:54 UTC 43451 WARNING: terminating connection because of crash of another server process 2018-09-17 12:09:54 UTC 43451 DETAIL: The postmaster has commanded this server process to roll back the current transactionand exit, because another server process exited abnormally and possibly corrupted shared memory. 2018-09-17 12:09:54 UTC 43451 HINT: In a moment you should be able to reconnect to the database and repeat your command. 2018-09-17 12:09:54 UTC 43444 LOG: archiver process (PID 43452) exited with exit code 1 2018-09-17 12:09:54 UTC 43444 LOG: all server processes terminated; reinitializing 2018-09-17 12:09:54 UTC 43840 LOG: database system was interrupted; last known up at 2018-09-17 12:08:35 UTC 2018-09-17 12:09:56 UTC 43840 LOG: database system was not properly shut down; automatic recovery in progress 2018-09-17 12:09:56 UTC 43840 LOG: redo starts at 0/6000098 2018-09-17 12:09:56 UTC 43840 LOG: invalid record length at 0/60000D0: wanted 24, got 0 2018-09-17 12:09:56 UTC 43840 LOG: redo done at 0/6000098 2018-09-17 12:09:56 UTC 43840 LOG: checkpoint starting: end-of-recovery immediate 2018-09-17 12:09:56 UTC 43840 LOG: checkpoint complete: wrote 0 buffers (0.0%); 0 transaction log file(s) added, 0 removed,0 recycled; write=0.006 s, sync=0.000 s, total=0.030 s; sync files=0, longest=0.000 s, average=0.000 s; distance=0kB, estimate=0 kB 2018-09-17 12:09:56 UTC 43840 LOG: MultiXact member wraparound protections are now enabled 2018-09-17 12:09:56 UTC 43444 LOG: database system is ready to accept connections 2018-09-17 12:09:56 UTC 43844 LOG: autovacuum launcher started any idea how can I investigate if the problem in the wrapper or in the database ?
The output of the core :
[root@node1_priviledged data]# gdb -q -c core
BFD: Warning: /data/pgsql/data/core is truncated: expected core file size >= 3268321280, found: 100470784.
[New Thread 861]
Failed to read a valid object file image from memory.
Core was generated by `postgres: postgres db1 [local] INSERT '.
Program terminated with signal 11, Segmentation fault.
#0 0x00007fda258499df in ?? ()
Doesnt give me any details that can help me investigate further. What else can I check ?
בתאריך יום ב׳, 17 בספט׳ 2018 ב-17:04 מאת Tom Lane <tgl@sss.pgh.pa.us>:
Mariel Cherkassky <mariel.cherkassky@gmail.com> writes:
> I'm trying to insert a few values into a foreign table via sqllite_fdw and
> my postgresql database crushes :
> ...
> any idea how can I investigate if the problem in the wrapper or in the
> database ?
Get a stack trace:
https://wiki.postgresql.org/wiki/Generating_a_stack_trace_of_a_PostgreSQL_backend
If the trace shows that the failure occurred in code of the wrapper,
I'd definitely blame the wrapper. If sqllite_fdw is nowhere to be seen
anywhere in the trace, then it's more debatable.
regards, tom lane