MariaDB-backup needs to check for SLAVE MONITOR as that is
what is returned by SHOW GRANTS.
Update test to ensure that warnings about missing privileges
do not occur when the backup is successful.
Reviewer: Andrew Hutchings
Thanks Eugene for reporting the issue.
this fixes galera.galera_sst_mariabackup_table_options
Note that `man snprintf` says
The functions snprintf() and vsnprintf() do not write more
than size bytes (including the terminating null byte
('\0')). If the output was truncated due to this limit, then
the return value is the number of characters (excluding the
terminating null byte) which would have been written to the
final string if enough space had been available.
Problem:
========
mariabackup --prepare fails to write the pages in encrypted format.
This issue happens only for default encrypted table when
innodb_encrypt_tables variable is enabled.
Fix:
====
backup process should write the value of innodb_encrypt_tables
variable in configuration file. prepare should enable the
variable based on configuration file.
The `unused-but-set-variable` warning is raised on MacOS from the
`posix_fadvise` standin macro, since offset is often otherwise unused. Add a
cast to absorb this warning.
Signed-off-by: Trevor Gross <tmgross@umich.edu>
The innodb_changed_pages plugin only was part of XtraDB, never InnoDB.
It would be useful for incremental backups.
We will remove the code from mariadb-backup for now, because it cannot
serve any useful purpose until the server part has been implemented.
mariadb-backup:
Adding a function get_os_user() to detect the OS user name
if the user name is not specified, to make mariadb-backup:
- work like MariaDB client tools work
- match its --help page, which says:
-u, --user=name This option specifies the username used when
connecting to the server, if that's not the current user.
This commit fixes GTID inconsistency which was injected by mariabackup SST.
Donor node now writes new info file: donor_galera_info, which is streamed
along the mariabackup donation to the joiner node. The donor_galera_info
file contains both GTID and gtid domain_id, and joiner will use these to
initialize the GTID state.
Commit has new mtr test case: galera_3nodes.galera_gtid_consistency, which
exercises potentially harmful mariabackup SST scenarios. The test has also
scenario with IST joining.
Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>
opt_kill_long_query_type being an enum could be 0 corresponding
to ALL. When ALL is specified, the CONNECTION ADMIN is still
required.
Also check REPLICA MONITOR privilege and make the tests
find the results by recording stderr.
Noticed thanks to bug report by Tim van Dijen.
Fixes: 79b58f1ca8
This is a port of the Percona Server commit 5265f42e290573e9591f8ca28ab66afc051f89a3
which is the same as their bug PXB-1807: xtrabackup does not accept fractional values for
innodb_max_dirty_pages_pct
Problem:
Variable specified as double in MySQL server, but read as long in the
xtrabackup. This causes xtrabackup to fail at startup when the value
contains decimal point.
Fix:
Make xtrabackup to interpret the value as double to be compatible with
server.
Problem:
The file backup-my.cnf from the backup directory was loaded by
"mariabackup --prepare" only in case of the explicit --target-dir given.
It was not loaded from the default directory ./xtrabackup_backupfiles/
in case if the explicit --target-dir was missing.
In other words, it worked as follows:
1. When started as "mariabackup --prepare --target-dir=DIR", mariabackup:
a. loads defaults from "DIR/backup-my.cnf"
b. processes data files in the specified directory DIR
2. When started as "mariabackup --prepare", mariabackup:
a. does not load defaults from "./xtrabackup_backupfiles/backup-my.cnf"
b. processes data files in the default directory "./xtrabackup_backupfiles/"
This patch fixes the second scenario, so it works as follows:
2. When started as "mariabackup --prepare", mariabackup:
a. loads defaults from "./xtrabackup_backupfiles/backup-my.cnf"
b. processes data files in the default directory "./xtrabackup_backupfiles/"
This change fixes (among others) the problem with the
"Can't open shared library '/file_key_management.so'" error
reported when "mariabackup --prepare" is used without --target-dir
in combinaton with the encryption plugin.
Revert the patch for MDEV-18917, which removed this functionality.
This restores that mariabackup --prepare recovers the transactional
binlog position from the redo log, and writes it to the file
xtrabackup_binlog_pos_innodb.
This position is updated only on every InnoDB commit. This means that
if the last event in the binlog at the time of backup is a DDL or
non-transactional update, the recovered position from --no-lock will
be behind the state of the backup.
Signed-off-by: Kristian Nielsen <knielsen@knielsen-hq.org>
There are many filesystem related errors that can occur with
MariaBackup. These already outputed to stderr with a good description of
the error. Many of these are permission or resource (file descriptor)
limits where the assertion and resulting core crash doesn't offer
developers anything more than the log message. To the user, assertions
and core crashes come across as poor error handling.
As such we return an error and handle this all the way up the stack.
copy_back(): Also copy the dummy empty ib_logfile0 so that
MariaDB Server 10.8 or later can be started after
--copy-back or --move-back.
Thanks to Daniel Black for reporting this.
This is a 10.5 version of
commit ebf3649259
copy_back(): Also copy the dummy empty ib_logfile0 so that
MariaDB Server 10.8 or later can be started after
--copy-back or --move-back.
Thanks to Daniel Black for reporting this.
There are many filesystem related errors that can occur with
MariaBackup. These already outputed to stderr with a good description of
the error. Many of these are permission or resource (file descriptor)
limits where the assertion and resulting core crash doesn't offer
developers anything more than the log message. To the user, assertions
and core crashes come across as poor error handling.
As such we return an error and handle this all the way up the stack.
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.
- `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/...
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.
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.
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.
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.
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.
