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SST scripts for Galera should use the new mariabackup interface
instead of the innobackupex interface, which is currently only
supported for compatibility reasons.
This commit converts the SST script for mariabackup to use the
new interface. It does not need separate tests, as any problems
will be seen as failures when running multiple tests for the
mariabackup-based SST.
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Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>
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To fix this, it is necessary to add an option to exclude the
database with the name "lost+found" from processing (the database
name will be checked by the check_if_skip_database_by_path() or
by the check_if_skip_database() function, and as a result
"lost+found" will be skipped).
In addition, it is necessary to slightly modify the verification
logic in the check_if_skip_database() function.
Also added a new test galera_sst_mariabackup_lost_found.test
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This patch fixes several flaws in the SST scripts that cause
failures while running tests that use version 6 IP addresses
for cluster nodes.
First, if the netcat utility is used for streaming (but not socat),
then in accordance with its command line syntax, we need to remove
the square brackets around the IPv6 address. However, for socat,
the address must contain square brackets, as before.
Secondly, if an IPv6 address is used, then from the joiner side for
a number of systems (such as Debian) we need to explicitly specify
the "-6" option, otherwise a listening socket with an IPv6 address
may not be created.
This patch also contains code improvements in the wsrep_sst_common.
Changed the code that pars the connection address - fixed the
shortcomings that sometimes led to incorrect parsing of parameters
when using shells other than the latest versions of bash.
Also, this patch removes the duplicate code that is intended
for parsing the connection address and which was located in the
wsrep_sst_mariabackup file, since all the necessary actions have
already been done in wsrep_sst_common and there they are done in
such a way that any shell is supported, not just bash.
The fix does not require separate tests, since all the
necessary tests are already present in the galera_3nodes suite.
On the contrary, after this fix, tests using IPv6 addresses can
be removed from the disabled list (this will be done in a separate
commit related to MDEV-23659).
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The problem is caused by the fact that adding the
--defaults-group-suffix option to fix MDEV-18863 causes
mysqld to read all options from the appropriate sections
of the config file, including options specific to mysqld_multi.
Reading unknown options (which are not supported by mysqld)
causes mysqld to terminate with an error.
However, the MDEV-18863 problem has been completely fixed
by passing options on the command line, and now there is no
need to specify the --defaults-group-suffix option (we just
need to give priority to options passed through the command
line, so as not to break MDEV-18863).
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The problem is caused by the operation of netcat streamer and does
not appear on systems where socat is installed. We need to add the
"-N" option for netcat to call shutdown() on the socket when receiving
EOF from STDIN.
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Setting "streamfmt=mbstream" in the "[sst]" section causes SST to fail
because the format automatically switches to 'tar' by default (insead
of mbstream).
To fix this, we need to add mbstream to the list of valid values for
the format, making it synonymous with xbstream. This must be done both
in the SST script and when parsing the options of the corresponding
utilities.
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installed (#1406)
Make sure failure to find mariabackup binary does not terminate
the script silently, terminate with a clear error message instead
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(similar to MDEV-18863) for more predictable test results (related to xtrabackup-v2 SST)
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After applying MDEV-18863, in some test configurations, SST
may fails due to duplication of some parameters (in particular
"--port") in the main part of the command line and after
"--mysqld-args", as well as due to incorrect interpretation
of the parameter "--port" passed after "--mysqld-args" when
the SST script is invoked without explicitly specifying a port
for SST. In addition, it is necessary to correctly handle spaces,
quotation marks and special characters when copying original
arguments from the argv[] array to a new command line (after
"--mysqld-args"). This patch resolves these shortcomings.
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Some users and some scripts (for example, mysqld_multi.sh) use special
option groups with names like [mysqld1], [mysqld2], ..., [mysqldN].
But SST scripts can't currently fully support these option groups.
The only option group-related value it gets from the server is
--defaults-group-suffix, if that option was set for mysqld when
the server was started.
However, the SST scripts does not get told by the server to read
these option groups, so this means that the SST script will fail
to read options like innodb-data-home-dir when it is in a option
group like [mysqld1]...[mysqldN].
Moreover, SST scripts ignore many parameters that can be passed
to them explicitly and cannot transfer them further, for example,
to the input of mariabackup utility. Ideally, we want to transfer
all the parameters of the original mysqld call to utilities such
as mariabackup, however the SST script does not receive these
parameters from the server and therefore cannot transfer them to
mariabackup.
To correct these shortcomings, we need to transfer to the scripts
all of the parameters of the original mysqld call, and in the SST
scripts themselves provide for the transfer all of these parameters
to utilities such as mariabackup. To prevent these parameters from
mixing with the script's own parameters, they should be transferred
to SST script after the special option "--mysqld-args", followed by
the string argument with the original parameters, as it received by
the mysqld call at the time of launch (further all these parameters
will be passed to mariabackup, for example).
In addition, the SST scripts themselves must be refined so that
they can read the parameters from the user-selected group, not just
from the global mysqld configuration group. And also so that they
can receive the parameters (which important for their work) as
command-line arguments.
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Some users and some scripts (for example, mysqld_multi.sh) use special
option groups with names like [mysqld1], [mysqld2], ..., [mysqldN].
But SST scripts can't currently fully support these option groups.
The only option group-related value it gets from the server is
--defaults-group-suffix, if that option was set for mysqld when
the server was started.
However, the SST scripts does not get told by the server to read
these option groups, so this means that the SST script will fail
to read options like innodb-data-home-dir when it is in a option
group like [mysqld1]...[mysqldN].
Moreover, SST scripts ignore many parameters that can be passed
to them explicitly and cannot transfer them further, for example,
to the input of mariabackup utility. Ideally, we want to transfer
all the parameters of the original mysqld call to utilities such
as mariabackup, however the SST script does not receive these
parameters from the server and therefore cannot transfer them to
mariabackup.
To correct these shortcomings, we need to transfer to the scripts
all of the parameters of the original mysqld call, and in the SST
scripts themselves provide for the transfer all of these parameters
to utilities such as mariabackup. To prevent these parameters from
mixing with the script's own parameters, they should be transferred
to SST script after the special option "--mysqld-args", followed by
the string argument with the original parameters, as it received by
the mysqld call at the time of launch (further all these parameters
will be passed to mariabackup, for example).
In addition, the SST scripts themselves must be refined so that
they can read the parameters from the user-selected group, not just
from the global mysqld configuration group. And also so that they
can receive the parameters (which important for their work) as
command-line arguments.
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in the parse_cnf --mysqld case
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modified: mysql-test/suite/galera/disabled.def
modified: mysql-test/suite/galera/r/galera_many_rows.result
modified: mysql-test/suite/galera/t/galera_kill_nochanges.test
new file: mysql-test/suite/galera/t/galera_many_rows.cnf
modified: mysql-test/suite/galera/t/galera_many_rows.test
modified: mysql-test/suite/galera/t/galera_var_dirty_reads.test
modified: scripts/wsrep_sst_mariabackup.sh
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Most of the mtr tests in the galera_3nodes suite fail
for a variety of reasons with a variety of errors.
This patch fixes several substantial flaws
in the galera_3nodes suite tests and in the mtr framework
service files, adapting the tests from galera_3nodes
for the current version of MariaDB.
This patch also synchronizes some galera_3nodes-related
files with the latest changes made for MDEV-17835 (v2 patch)
and for MDEV-18379 in other branches (10.2 and 10.3).
Closes #1161
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This patch contains the port of the MDEV-18379 patch
for 10.2 branch, but also includes a number of changes
made within MDEV-17835, which are necessary for the
normal operation of tests that use IPv6:
1) Currently, the three-node mtr suite for Galera (galera_3nodes)
uses a separate IPv6 availability check using the "have_ipv6.inc"
file. This check duplicates a more accurate check at suite.pm
level, which can be used by including the file "check_ipv6.inc".
This patch removes this discrepancy between suites.
2) Fixed numerous bugs in the SST scripts and in the mtr test
files (galera_3nodes mtr suite) that prevented the use of Galera
with IPv6 addresses.
3) Fixed flaws in the galera_3nodes mtr suite control scripts,
because of which they could not work with mariabackup.
4) Fixed flaws in the rsync and mysqldump tests (for galera_3nodes
mtr tests suite). These tests were not performed successfully
without these fixes.
5) GAL-501 test in the galera_3nodes suite does not contain the
option "--bind-address=::" that is needed for the test to work
correctly with IPv6 (at least on some systems), since without
it the server will not wait for connections on the IPv6
interface.
https://jira.mariadb.org/browse/MDEV-18379
and partially https://jira.mariadb.org/browse/MDEV-17835
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This patch contains the port of the MDEV-18379 patch
for 10.1 branch, but also includes a number of changes
made within MDEV-17835, which are necessary for the
normal operation of tests that use IPv6:
1) Fixed flaws in the galera_3nodes mtr suite control scripts,
because of which they could not work with mariabackup.
2) Fixed numerous bugs in the SST scripts and in the mtr test
files (galera_3nodes mtr suite) that prevented the use of Galera
with IPv6 addresses.
3) Fixed flaws in tests for rsync and mysqldump (for galera_3nodes
mtr tests suite). These tests were not performed successfully
without these fixes.
4) Currently, the three-node mtr suite for Galera (galera_3nodes)
uses a separate IPv6 availability check using the "have_ipv6.inc"
file. This check duplicates a more accurate check at suite.pm
level, which can be used by including the file "check_ipv6.inc".
This patch removes this discrepancy between suites.
5) GAL-501 test in the galera_3nodes suite does not contain the
option "--bind-address=::" which is needed for the test to work
correctly with IPv6 (at least on some systems), since without
it the server will not wait for connections on the IPv6 interface.
https://jira.mariadb.org/browse/MDEV-18379
and partially https://jira.mariadb.org/browse/MDEV-17835
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make it compatible on FreeBSD.
If the parent process does not exist, there's no need to kill it.
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MDEV-14612 wsrep_sst_mariabackup unnecessarily converts address to host name
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SST script for mariabackup (wsrep_sst_mariabackup.sh) does reverse DNS to convert
the joiner's IP address to domain name, and this is not always a wanted feature.
It is not understood why this remote host DNS conversion is in the script,
in the first place, but conversion was originally added by commit:
commit 3d8aacba861044843417b710fff208b8bd6a53c4
Author: Nirbhay Choubey <nirbhay.choubey@gmail.com>
Date: Wed Feb 22 15:58:45 2017 -0500
In this commit, REMOTEHOST variable is removed and replaced by REMOTEIP. All
references to joiner is therefore by IP address only.
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is killed
SST transfer scripts rsync and maribackup now monitor parent process and will cleanup if process dies
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InnoDB I/O and buffer pool interfaces and the redo log format
have been changed between MariaDB 10.1 and 10.2, and the backup
code has to be adjusted accordingly.
The code has been simplified, and many memory leaks have been fixed.
Instead of the file name xtrabackup_logfile, the file name ib_logfile0
is being used for the copy of the redo log. Unnecessary InnoDB startup and
shutdown and some unnecessary threads have been removed.
Some help was provided by Vladislav Vaintroub.
Parameters have been cleaned up and aligned with those of MariaDB 10.2.
The --dbug option has been added, so that in debug builds,
--dbug=d,ib_log can be specified to enable diagnostic messages
for processing redo log entries.
By default, innodb_doublewrite=OFF, so that --prepare works faster.
If more crash-safety for --prepare is needed, double buffering
can be enabled.
The parameter innodb_log_checksums=OFF can be used to ignore redo log
checksums in --backup.
Some messages have been cleaned up.
Unless --export is specified, Mariabackup will not deal with undo log.
The InnoDB mini-transaction redo log is not only about user-level
transactions; it is actually about mini-transactions. To avoid confusion,
call it the redo log, not transaction log.
We disable any undo log processing in --prepare.
Because MariaDB 10.2 supports indexed virtual columns, the
undo log processing would need to be able to evaluate virtual column
expressions. To reduce the amount of code dependencies, we will not
process any undo log in prepare.
This means that the --export option must be disabled for now.
This also means that the following options are redundant
and have been removed:
xtrabackup --apply-log-only
innobackupex --redo-only
In addition to disabling any undo log processing, we will disable any
further changes to data pages during --prepare, including the change
buffer merge. This means that restoring incremental backups should
reliably work even when change buffering is being used on the server.
Because of this, preparing a backup will not generate any further
redo log, and the redo log file can be safely deleted. (If the
--export option is enabled in the future, it must generate redo log
when processing undo logs and buffered changes.)
In --prepare, we cannot easily know if a partial backup was used,
especially when restoring a series of incremental backups. So, we
simply warn about any missing files, and ignore the redo log for them.
FIXME: Enable the --export option.
FIXME: Improve the handling of the MLOG_INDEX_LOAD record, and write
a test that initiates a backup while an ALGORITHM=INPLACE operation
is creating indexes or rebuilding a table. An error should be detected
when preparing the backup.
FIXME: In --incremental --prepare, xtrabackup_apply_delta() should
ensure that if FSP_SIZE is modified, the file size will be adjusted
accordingly.
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Execute mariabackup in innobackupex mode to avoid "unknown argument" error.
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