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aria_log_dir_path is used
Fixing buildbot failures on mariabackup.aria_log_dir_path_rel.
The problem was that directory_exists() was called with the
relative aria_log_dir_path value, while the current directory
in mariadb-backup is not necessarily equal to datadir when MTR is running.
Fix:
- Moving building the absolute path un level upper:
from the function copy_back_aria_logs() to the function copy_back().
- Passing the built absolute path to both directory_exists() and
copy_back_aria_logs() as a parameter.
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- `mariadb-backup --backup` was fixed to fetch the value of the
@@aria_log_dir_path server variable and copy aria_log* files
from @@aria_log_dir_path directory to the backup directory.
Absolute and relative (to --datadir) paths are supported.
Before this change aria_log* files were copied to the backup
only if they were in the default location in @@datadir.
- `mariadb-backup --copy-back` now understands a new my.cnf and command line
parameter --aria-log-dir-path.
`mariadb-backup --copy-back` in the main loop in copy_back()
(when copying back from the backup directory to --datadir)
was fixed to ignore all aria_log* files.
A new function copy_back_aria_logs() was added.
It consists of a separate loop copying back aria_log* files from
the backup directory to the directory specified in --aria-log-dir-path.
Absolute and relative (to --datadir) paths are supported.
If --aria-log-dir-path is not specified,
aria_log* files are copied to --datadir by default.
- The function is_absolute_path() was fixed to understand MTR style
paths on Windows with forward slashes, e.g.
--aria-log-dir-path=D:/Buildbot/amd64-windows/build/mysql-test/var/...
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This is a non-functional change.
simplifying the code logic:
- removing global variables ds_data and ds_meta
- passing these variables as parameters to functions instead
- adding helper classes: Datasink_free_list and Backup_datasinks
- moving some function accepting a ds_ctxt parameter
as methods to ds_ctxt.
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permitted for main PID yyyy" in systemd during SST
server has systemd support and calls sd_notify() to communicate
the status to systemd.
mariabackup links the whole server in, but it should not notify
systemd, because it's not started or managed by systemd.
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fil_space_t::create(), fil_space_t::add(): Expect the caller to
acquire and release fil_system.mutex. In this way, creating a tablespace
and adding the first (usually only) data file will be atomic.
recv_sys_t::recover_deferred(): Correctly protect some changes by
holding fil_system.mutex.
Tested by: Matthias Leich
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export on partial backup preparing
The solution is to suppress error messages for missing tablespaces if
mariabackup is launched with "--prepare --export" options.
"mariabackup --prepare --export" invokes itself with --mysqld parameter.
If the parameter is set, then it starts server to feed "FLUSH TABLES ...
FOR EXPORT;" queries for exported tablespaces. This is "normal" server
start, that's why new srv_operation value is introduced.
Reviewed by Marko Makela.
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specified as a relative path) during copy-back operation
Make absolute destination path from relative one, basing on mysql data
directory.
Reviewed by Alexander Barkov.
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command
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While performing SAST scanning using Cppcheck against source code of
commit 81196469, several code vulnerabilities were found.
Fix following issues:
1. Parameters of `snprintf` function are incorrect.
Cppcheck error:
client/mysql_plugin.c:1228: error: snprintf format string requires 6 parameters but only 5 are given.
It is due to commit 630d7229 introduced option `--lc-messages-dir`
in the bootstrap command. However the parameter was not even given
in the `snprintf` after changing the format string.
Fix:
Restructure the code logic and correct the function parameters for
`snprintf`.
2. Null pointer is used in a `snprintf` which could cause a crash.
Cppcheck error:
extra/mariabackup/xbcloud.cc:2534: error: Null pointer dereference
The code intended to print the swift_project name, if the
opt_swift_project_id is NULL but opt_swift_project is not NULL.
However the parameter of `snprintf` was mistakenly using
`opt_swift_project_id`.
Fix:
Change to use the correct string from `opt_swift_project`.
3. Potential double release of a memory
Cppcheck error:
plugin/auth_pam/testing/pam_mariadb_mtr.c:69: error: Memory pointed to by 'resp' is freed twice.
A pointer `resp` is reused and allocated new memory after it has been
freed. However, `resp` was not set to NULL after freed.
Potential double release of the same pointer if the call back
function doesn't allocate new memory for `resp` pointer.
Fix:
Set the `resp` pointer to NULL after the first free() to make sure
the same address is not freed twice.
All new code of the whole pull request, including one or several files
that are either new files or modified ones, are contributed under the
BSD-new license. I am contributing on behalf of my employer Amazon Web
Services, Inc.
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in MDEV-23855
fil_node_open_file_low() tries to close files from the top of
fil_system.space_list if the number of opened files is exceeded.
It invokes fil_space_t::try_to_close(), which iterates the list searching
for the first opened space. Then it just closes the space, leaving it in
the same position in fil_system.space_list.
On heavy files opening, like during 'SHOW TABLE STATUS ...' execution,
if the number of opened files limit is reached,
fil_space_t::try_to_close() iterates more and more closed spaces before
reaching any opened space for each fil_node_open_file_low() call. What
causes performance regression if the number of spaces is big enough.
The fix is to keep opened spaces at the top of fil_system.space_list,
and move closed files at the end of the list.
For this purpose fil_space_t::space_list_last_opened pointer is
introduced. It points to the last inserted opened space in
fil_space_t::space_list. When space is opened, it's inserted to the
position just after the pointer points to in fil_space_t::space_list to
preserve the logic, inroduced in MDEV-23855. Any closed space is added
to the end of fil_space_t::space_list.
As opened spaces are located at the top of fil_space_t::space_list,
fil_space_t::try_to_close() finds opened space faster.
There can be the case when opened and closed spaces are mixed in
fil_space_t::space_list if fil_system.freeze_space_list was set during
fil_node_open_file_low() execution. But this should not cause any error,
as fil_space_t::try_to_close() still iterates spaces in the list.
There is no need in any test case for the fix, as it does not change any
functionality, but just fixes performance regression.
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- Change to use 'mariadbd' instead of 'mysqld' in help texts and other
visible places.
- Start binary 'mariadbd' instead of 'mysqld'. This will remove a warning
in 11.0 when running mysql_install_db.
- Use my_print_defaults --mariadbd instead of --mysqld
- Use --skip-log-error if the user don't have access to log-error file.
This it needed to allow mysql_install_db to work silenty for users that
has not write access to /var/log.
Other things:
- Updated my_print_defaults to support --mariadbd
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Charset names in the 'languages' line are not used any more.
Removing to avoid confusion.
All messages in errmsg-utf8.txt are in utf8 now.
Charset names should have been removed in MySQL-5.5 during: https://dev.mysql.com/worklog/task/?id=751
Bump version number.
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on buildbot
The -D flag was not passed to asm compiler, despite SET_PROPERTY(COMPILE_OPTIONS)
The exact reason for that remains unknown. It was not seen with gcc, as
nor was be reproduced on newer CMake.
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'innodb_flush_method=async_unbuffered'
Normalize innodb_flush_method, the same as the service, before
attempting to print it.
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Changing the tool name in the "mariadb-backup --help" output
from "innobackupex" to "mariadb-backup".
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