===========
When doing an upgrade, you execute mysql_upgrade. If
mysql_upgrade fails to connect or it connects with a user
without the proper privileges, it will return the error:
FATAL ERROR: Upgrade failed
which is not very informative.
ANALYSIS
========
In main() and check_version_match(), the condition for
errors are clubbed together and throw the same error msg.
The functions need to be splitted up and the corresponding
error msgs have to be displayed.
FIX
===
Splitted the functions and added the specific error msg.
CONFIG FILES CAUSES TEST
Utility as "mysql_upgrade" forks "mysql"/"mysqlcheck". Attaching
"mysql_upgrade" shows following calls after forking "mysql" or
"mysql_check" when configuration file information is passed as
first argument to "mysql_upgrade".
strace -f ./mysql_upgrade --defaults-file=../pdb/my.cnf --socket=../pdb/mysql.sock -f
[pid 6254] stat("/etc/my.cnf", 0x7fff8e772680) = -1 ENOENT (No such file or directory)
[pid 6254] stat("/etc/mysql/my.cnf", 0x7fff8e772680) = -1 ENOENT (No such file or directory)
[pid 6254] stat("/usr/local/mysql/etc/my.cnf", 0x7fff8e772680) = -1 ENOENT (No such file or directory)
[pid 6254] stat("/home/user_name/.my.cnf", {st_mode=S_IFREG|0664, st_size=19, ...}) = 0
[pid 6254] open("/home/user_name/.my.cnf", O_RDONLY) = 3
But when tool forks "mysqlcheck"/"mysql", "--no-defaults" is passed
as first argument. Before forking, in function "find_tool" of
"mysql_upgrade", check is made to verify whether tool can be
executable or not by calling "mysqlcheck --help" and "mysql --help".
But argument "--no-defaults", "--defaults-file" or
"defaults-extra-file" is not passed to "mysql" and "mysqlcheck".
So my.cnf is searched in default paths.
Fix:
------
Modified code to pass "--no-defaults" as first argument to "mysql"
and "mysqlcheck" while checking tool can be executed or not.
(Based on Sinisa's patch)
Added a version checking facility to mysql_upgrade.
The versions used for checking is the version of the
server that mysql_upgrade is going to upgrade and the
server version that mysql_upgrade was build/distributed
with.
Also added an option '--version-check' to enable/disable
the version checking.
SHOW 2012 INSTEAD OF 2011
* Added a new macro to hold the current year :
COPYRIGHT_NOTICE_CURRENT_YEAR
* Modified ORACLE_WELCOME_COPYRIGHT_NOTICE macro
to take the initial year as parameter and pick
current year from the above mentioned macro.
OPTION SKIP-WRITE-BINLOG
System tables were not getting upgraded when
mysql_upgrade was run with --skip-write-binlog
option. (Same for --write-binlog.) Also, with
this option, mysql_upgrade_info file was not
getting created after the upgrade.
mysql_upgrade makes use of mysql client tool in
order to run upgrade scripts, while doing so it
passes some of the command line options (used to
start mysql_upgrade) directly to mysql client.
The reason behind this bug being, some options
like skip-write-binlog and upgrade-system-tables
were being passed to mysql tool along with other
options, and hence mysql execution failed due
presence of these invalid options.
Fixed this issue by filtering out the above mentioned
options from the list of options that will be passed to
mysql and mysqlcheck tools. However, since --write-binlog
is supported by mysqlcheck, this option would be used
explicitly while running mysqlcheck. (not part of patch,
already there)
Checking the contents of general log after the upgrade
is not doable via an mtr test. So performed manual test.
Added a test to verify the creation of mysql_upgrade_info.
TOOLS
Backport a fix for Bug 57094 from 5.5.
The following revision was backported:
# revision-id: alexander.nozdrin@oracle.com-20101006150613-ls60rb2tq5dpyb5c
# parent: bar@mysql.com-20101006121559-am1e05ykeicwnx48
# committer: Alexander Nozdrin <alexander.nozdrin@oracle.com>
# branch nick: mysql-5.5-bugteam-bug57094
# timestamp: Wed 2010-10-06 19:06:13 +0400
# message:
# Fix for Bug 57094 (Copyright notice incorrect?).
#
# The fix is to:
# - introduce ORACLE_WELCOME_COPYRIGHT_NOTICE define to have a single place
# to specify copyright notice;
# - replace custom copyright notices with ORACLE_WELCOME_COPYRIGHT_NOTICE
# in programs.
The fix is to:
- introduce ORACLE_WELCOME_COPYRIGHT_NOTICE define to have a single place
to specify copyright notice;
- replace custom copyright notices with ORACLE_WELCOME_COPYRIGHT_NOTICE
in programs.
Fix warnings flagged by the new warning option -Wunused-but-set-variable
that was added to GCC 4.6 and that is enabled by -Wunused and -Wall. The
option causes a warning whenever a local variable is assigned to but is
later unused. It also warns about meaningless pointer dereferences.
strict aliasing violations.
Essentially, the problem is that large parts of the server were
developed in simpler times (last decades, pre C99 standard) when
strict aliasing and compilers supporting such optimizations were
rare to non-existent. Thus, when compiling the server with a modern
compiler that uses strict aliasing rules to perform optimizations,
there are several places in the code that might trigger undefined
behavior.
As evinced by some recent bugs, GCC does a somewhat good of job
misoptimizing such code, but on the other hand also gives warnings
about suspicious code. One problem is that the warnings aren't
always accurate, yet we can't afford to just shut them off as we
might miss real cases. False-positive cases are aggravated mostly
by casts that are likely to trigger undefined behavior.
The solution is to start a cleanup process focused on fixing and
reducing the amount of strict-aliasing related warnings produced
by GCC and others compilers. A good deal of noise reduction can
be achieved by just removing useless casts that are product of
historical cruft and are likely to trigger undefined behavior if
dereferenced.
Conflicts:
Text conflict in client/mysqlbinlog.cc
Text conflict in mysql-test/Makefile.am
Text conflict in mysql-test/collections/default.daily
Text conflict in mysql-test/r/mysqlbinlog_row_innodb.result
Text conflict in mysql-test/suite/rpl/r/rpl_typeconv_innodb.result
Text conflict in mysql-test/suite/rpl/t/rpl_get_master_version_and_clock.test
Text conflict in mysql-test/suite/rpl/t/rpl_row_create_table.test
Text conflict in mysql-test/suite/rpl/t/rpl_slave_skip.test
Text conflict in mysql-test/suite/rpl/t/rpl_typeconv_innodb.test
Text conflict in mysys/charset.c
Text conflict in sql/field.cc
Text conflict in sql/field.h
Text conflict in sql/item.h
Text conflict in sql/item_func.cc
Text conflict in sql/log.cc
Text conflict in sql/log_event.cc
Text conflict in sql/log_event_old.cc
Text conflict in sql/mysqld.cc
Text conflict in sql/rpl_utility.cc
Text conflict in sql/rpl_utility.h
Text conflict in sql/set_var.cc
Text conflict in sql/share/Makefile.am
Text conflict in sql/sql_delete.cc
Text conflict in sql/sql_plugin.cc
Text conflict in sql/sql_select.cc
Text conflict in sql/sql_table.cc
Text conflict in storage/example/ha_example.h
Text conflict in storage/federated/ha_federated.cc
Text conflict in storage/myisammrg/ha_myisammrg.cc
Text conflict in storage/myisammrg/myrg_open.c
Conflicts:
Text conflict in client/mysqlbinlog.cc
Text conflict in mysql-test/r/explain.result
Text conflict in mysql-test/r/subselect.result
Text conflict in mysql-test/r/subselect3.result
Text conflict in mysql-test/r/type_datetime.result
Text conflict in sql/share/Makefile.am
mysql_upgrade was passing an non-initialized non-null tmpdir to create_temp_file() if no
--tmpdir was specified. This prevents create_temp_file() from taking the system
temporary file path and as a result mysql_upgrade was trying to open a file in a
directory that it may not have write access to.
Fixed by making sure mysql_upgrade will pass a zero length temp dir string to
create_temp_file() if no --tmpdir is specified.
Conflicts:
Text conflict in .bzr-mysql/default.conf
Text conflict in mysql-test/suite/rpl/r/rpl_slow_query_log.result
Text conflict in mysql-test/suite/rpl/t/rpl_slow_query_log.test
Conflict adding files to server-tools. Created directory.
Conflict because server-tools is not versioned, but has versioned children. Versioned directory.
Conflict adding files to server-tools/instance-manager. Created directory.
Conflict because server-tools/instance-manager is not versioned, but has versioned children. Versioned directory.
Contents conflict in server-tools/instance-manager/options.cc
Text conflict in sql/mysqld.cc
"mysql_upgrade (ver 5.1) add 3 fields to mysql.proc table but does
not set values".
mysql_upgrade (ver 5.1) adds 3 fields (character_set_client,
collation_connection and db_collation) to the mysql.proc table, but
does not set any values. When we run stored procedures, which were
created with mysql 5.0, a warning is logged into the error log.
The solution to this is for mysql_upgrade to set default best guess
values for these fields. A warning is also written during upgrade, to
make the user aware that default values are set.
(backport)
mysql_upgrade script accepts --upgrade-system-tables option,
fixing only system tables in this case.
per-file comments:
client/mysql_upgrade.c
WL#4991 mysql_upgrade --fix-privilege-tables
--upgrade-system-tables option added.
if it is set, the tool won't look for the mysqlcheck then
run_mysqlcheck_fixnames() and run_mysqlcheck_upgrade won't be called.
mysql-test/r/mysql_upgrade.result
WL#4991 mysql_upgrade --fix-privilege-tables
test result added
mysql-test/t/mysql_upgrade.test
WL#4991 mysql_upgrade --fix-privilege-tables
test case added
added code to exit a tool if the forced config file wasn't found
per-file comments:
client/mysql.cc
Bug#47216 programs should quit if the file specified by --defaults-file option isn't found
added code to exit a tool if the forced config file wasn't found
client/mysql_upgrade.c
Bug#47216 programs should quit if the file specified by --defaults-file option isn't found
added code to exit a tool if the forced config file wasn't found
client/mysqladmin.cc
Bug#47216 programs should quit if the file specified by --defaults-file option isn't found
added code to exit a tool if the forced config file wasn't found
client/mysqlcheck.c
Bug#47216 programs should quit if the file specified by --defaults-file option isn't found
added code to exit a tool if the forced config file wasn't found
client/mysqldump.c
Bug#47216 programs should quit if the file specified by --defaults-file option isn't found
added code to exit a tool if the forced config file wasn't found
client/mysqlimport.c
Bug#47216 programs should quit if the file specified by --defaults-file option isn't found
added code to exit a tool if the forced config file wasn't found
client/mysqlshow.c
Bug#47216 programs should quit if the file specified by --defaults-file option isn't found
added code to exit a tool if the forced config file wasn't found
client/mysqlslap.c
Bug#47216 programs should quit if the file specified by --defaults-file option isn't found
added code to exit a tool if the forced config file wasn't found
mysql-test/t/mysql.test
Bug#47216 programs should quit if the file specified by --defaults-file option isn't found
test added
sql/mysqld.cc
Bug#47216 programs should quit if the file specified by --defaults-file option isn't found
added code to exit a tool if the forced config file wasn't found
storage/myisam/myisamchk.c
Bug#47216 programs should quit if the file specified by --defaults-file option isn't found
added code to exit a tool if the forced config file wasn't found
storage/myisam/myisampack.c
Bug#47216 programs should quit if the file specified by --defaults-file option isn't found
added code to exit a tool if the forced config file wasn't found
All statements executed by mysql_upgrade are binlogged and then are replicated to slave.
This will result in some errors. The report of this bug has demonstrated some examples.
Master and slave should be upgraded separately. All statements executed by
mysql_upgrade will not be binlogged.
--write-binlog and --skip-write-binlog options are added into mysql_upgrade.
These options control whether sql statements are binlogged or not.
with gcc 4.3.2
This patch fixes a number of GCC warnings about variables used
before initialized. A new macro UNINIT_VAR() is introduced for
use in the variable declaration, and LINT_INIT() usage will be
gradually deprecated. (A workaround is used for g++, pending a
patch for a g++ bug.)
GCC warnings for unused results (attribute warn_unused_result)
for a number of system calls (present at least in later
Ubuntus, where the usual void cast trick doesn't work) are
also fixed.
Dump all connection-related arguments when running mysqlcheck
from mysql_upgrade.
No test case, since the output depends on the test suite
configuration and platform.
- Remove bothersome warning messages. This change focuses on the warnings
that are covered by the ignore file: support-files/compiler_warnings.supp.
- Strings are guaranteed to be max uint in length
- Remove bothersome warning messages. This change focuses on the warnings
that are covered by the ignore file: support-files/compiler_warnings.supp.
- Strings are guaranteed to be max uint in length
modifying the original fix.
As it turned out --fix-db-names option of the mysqlcheck suppress
the --check_upgrade option, so we have to call the mysqlcheck twice
from the mysql_upgrade.
per-file comments:
client/mysql_upgrade.c
Bug#35934 mysql_upgrade calls mysqlcheck with insufficient parameters
