Re: Primary key Index Error - Mailing list pgsql-general

On Tue, Oct 25, 2011 at 2:41 AM, Raghavendra
<raghavendra.rao@enterprisedb.com> wrote:
> On Tue, Oct 25, 2011 at 11:40 AM, Manoj K P <manoj@comodo.com> wrote:
>>
>> Server log Oct 1 00:06:59 server_host_name postgres[1453]: [5-1]
>> 2011-10-01 00:06:59.831 EDT 1453 4e869041.5ad postgres [local] postgres LOG:
>> duration: 418583.238 ms statement: select pg_start_backup('fortnightly');
>> Oct 2 03:03:18 server_host_name postgres[1453]: [6-1] 2011-10-02
>> 03:03:18.243 EDT 1453 4e869041.5ad postgres [local] postgres LOG: duration:
>> 8034.385 ms statement: select pg_stop_backup(); In between stop and start
>> process server_host_name is receiving all type of DML & DDL and generating
>> new WAL file Taking base backup in between start and stop process Client Log
>> Details Oct 25 05:16:18 client_server_name postgres[28858]: [2-1] 2011-10-25
>> 05:16:18.202 BST 28858 LOG: could not open file
>> "pg_xlog/00002710000047B10000008C" (log file 18353, segment 140): No such
>> file or directory Oct 25 05:16:18 client_server_name postgres[28858]: [3-1]
>> 2011-10-25 05:16:18.203 BST 28858 LOG: invalid checkpoint record Oct 25
>> 05:16:18 client_server_name postgres[28858]: [4-1] 2011-10-25 05:16:18.203
>> BST 28858 FATAL: could not locate required checkpoint record Oct 25 05:16:18
>> client_server_name postgres[28858]: [4-2] 2011-10-25 05:16:18.203 BST 28858
>> HINT: If you are not restoring from a backup, try removing the file
>> "/mnt/new_cluster/backup_label". Oct 25 05:16:18 client_server_name
>> postgres[28857]: [1-1] 2011-10-25 05:16:18.205 BST 28857 LOG: startup
>> process (PID 28858) exited with exit code 1 Oct 25 05:16:18
>> client_server_name postgres[28857]: [2-1] 2011-10-25 05:16:18.205 BST 28857
>> LOG: aborting startup due to startup process failure Oct 25 05:20:53
>> client_server_name postgres[29030]: [2-1] 2011-10-25 05:20:53.630 BST 29030
>> LOG: could not open file "pg_xlog/00002710000047B100000068" (log file 18353,
>> segment 104): No such file or directory Oct 25 05:20:53 client_server_name
>> postgres[29030]: [3-1] 2011-10-25 05:20:53.630 BST 29030 FATAL: could not
>> find redo location referenced by checkpoint record Oct 25 05:20:53
>> client_server_name postgres[29030]: [3-2] 2011-10-25 05:20:53.630 BST 29030
>> HINT: If you are not restoring from a backup, try removing the file
>> "/mnt/new_cluster/backup_label". Oct 25 05:20:53 client_server_name
>> postgres[29029]: [1-1] 2011-10-25 05:20:53.633 BST 29029 LOG: startup
>> process (PID 29030) exited with exit code 1 Oct 25 05:20:53
>> client_server_name postgres[29029]: [2-1] 2011-10-25 05:20:53.633 BST 29029
>> LOG: aborting startup due to startup process failure manually copy following
>> file to pg_xlog folder 00002710000047B10000008C 00002710000047B100000068
>> After words i can start postgres and accessing the database , but same
>> error
>
> As per the logs, do you see missing XLOG files in Archive Destination ? becz
> these kind of situations mostly missing files will be in WAL-Archive
> location. You need to copy to pg_xlog directory and start the instance.
>
> As Merlin Said, you need to dig more to know why its crashing by increasing
> the LOG-DEBUG level's. Increasing DEBUG level may occupy good amount of
> space in log-location, so make sure you have good space for logs to get what
> exactly happening at the time of backup in particular. Am not sure whether
> its safe to attach ***backtrace*** to instance for information.

yeah. also, what's the setting of archive_command (or is it even set)?
 taking a 'hot' filesystem backup without having an archive_command
and not doing any other intervention to guarantee the necessary WAL
segments are present will not give you a complete backup.  my money is
on you having an invalid backup procedure.  the only way to take a
filesystem snapshot without dealing with WAL files is to bring the
database down.

merlin