[Firebird-devel] [FB-Tracker] Created: (CORE-4022) gbak intermittantly reports "Fatal lock manager error: invalid lock id (10963360), errno: 22" in firebird.log and the backup fails

[Fox (JIRA) <tr...@fi...>]

gbak intermittantly reports "Fatal lock manager error: invalid lock id (10963360), errno: 22" in firebird.log and the backup fails
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                 Key: CORE-4022
                 URL: http://tracker.firebirdsql.org/browse/CORE-4022
             Project: Firebird Core
          Issue Type: Bug
          Components: Engine, GBAK
    Affects Versions: 2.1.5
         Environment: CentOS 5.8 x86_64
Firebird Classic Server 2.1.5 from EPEL
            Reporter: Fox


The bug occurs intermittently when run a backup script (gbak on cron) every day at night.


The script of backup contains the following:
cd /var/lib/firebird/data
rm -f res_MAINDBI.log
gbak -g -b -z -v -user "sysdba" -pas "masterkey" -y res_MAINDBI.log MAINDB1.FDB MAINDBI.FBK


The error does not occur every night, just some, when it occurs, the backup fails, 
the back-end of the log does not say the words "gbak:closing file, committing, and finishing. 2665691648 bytes written" so that the backup is not successful.


When this bug occurs in "firebird.log" file shows the following:
srvcentos.local  Wed Dec 19 01:00:08 2012
        ISC_kill: process 25266 couldn't deliver signal 16 to process 10141: permission denied

srvcentos.local  Wed Dec 19 01:00:08 2012
        Fatal lock manager error: invalid lock id (10963360), errno: 22


Notes:
OS: Centos 5.8 x86_64 updated to date.
Firebird Classic Server: This is the version 2.1.5 of the EPEL repository.

Installed Packages from EPEL (http://dl.fedoraproject.org/pub/epel/5/x86_64/repoview/firebird-classic.html):
firebird.x86_64			[2.1.5.18496.0-2.el5]
firebird-classic.x86_64         [2.1.5.18496.0-2.el5]
firebird-filesystem.x86_64      [2.1.5.18496.0-2.el5]
firebird-libfbclient.x86_64     [2.1.5.18496.0-2.el5]
firebird-libfbembed.x86_64      [2.1.5.18496.0-2.el5]



Runing fb_inet_server proccess as user "firebird" and the script as user "root" using cron:

Process A
USER: firebird
COMMAND: fb_inet_server

Process B
USER: firebird
COMMAND: fb_lock_mgr

Process C
USER: root
COMMAND: cron (script of backup)


The bug only occurs every few weeks, but when it happens, the backup fails.

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