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Added missing mysqlbinlog to binary distributions.

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Applied patch to mysqlhotcopy
This commit is contained in:
monty@hundin.mysql.fi
2001-11-07 00:08:57 +02:00
parent 65d4c846d8
commit 4157d12df5
5 changed files with 108 additions and 14 deletions
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111
scripts/mysqlhotcopy.sh
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@@ -6,6 +6,7 @@ use Data::Dumper;
use File::Basename;
use File::Path;
use DBI;
use Sys::Hostname;
=head1 NAME
@@ -36,7 +37,7 @@ WARNING: THIS PROGRAM IS STILL IN BETA. Comments/patches welcome.
# Documentation continued at end of file
my $VERSION = "1.12";
my $VERSION = "1.13";
my $opt_tmpdir = $ENV{TMPDIR} || "/tmp";
@@ -68,6 +69,7 @@ Usage: $0 db_name[./table_regex/] [new_db_name | directory]
--resetmaster reset the binlog once all tables are locked
--resetslave reset the master.info once all tables are locked
--tmpdir=# temporary directory (instead of $opt_tmpdir)
--record_log_pos=# record slave and master status in specified db.table
Try \'perldoc $0 for more complete documentation\'
_OPTIONS
@@ -101,6 +103,7 @@ GetOptions( \%opt,
"regexp=s",
"suffix=s",
"checkpoint=s",
"record_log_pos=s",
"flushlog",
"resetmaster",
"resetslave",
@@ -117,6 +120,7 @@ GetOptions( \%opt,
# 'target' - destination directory of the copy
# 'tables' - array-ref to list of tables in the db
# 'files' - array-ref to list of files to be copied
# 'index' - array-ref to list of indexes to be copied
#
my @db_desc = ();
@@ -172,6 +176,16 @@ if ( $opt{checkpoint} ) {
if ( $@ );
}
# --- check that log_pos table exists if specified ---
if ( $opt{record_log_pos} ) {
eval { $dbh->do( qq{ select host, time_stamp, log_file, log_pos, master_host, master_log_file, master_log_pos
from $opt{record_log_pos} where 1 != 1} );
};
die "Error accessing log_pos table ($opt{record_log_pos}): $@"
if ( $@ );
}
# --- get variables from database ---
my $sth_vars = $dbh->prepare("show variables like 'datadir'");
$sth_vars->execute;
@@ -294,8 +308,6 @@ foreach my $rdb ( @db_desc ) {
# --- resolve targets for copies ---
my @targets = ();
if (defined($tgt_name) && length $tgt_name ) {
# explicit destination directory specified
@@ -382,11 +394,12 @@ foreach my $rdb ( @db_desc ) {
# read lock all the tables we'll be copying
# in order to get a consistent snapshot of the database
if ( $opt{checkpoint} ) {
# convert existing READ lock on checkpoint table into WRITE lock
unless ( $hc_locks =~ s/$opt{checkpoint}\s+READ/$opt{checkpoint} WRITE/ ) {
$hc_locks .= ", $opt{checkpoint} WRITE";
}
if ( $opt{checkpoint} || $opt{record_log_pos} ) {
# convert existing READ lock on checkpoint and/or log_pos table into WRITE lock
foreach my $table ( grep { defined } ( $opt{checkpoint}, $opt{record_log_pos} ) ) {
$hc_locks .= ", $table WRITE"
unless ( $hc_locks =~ s/$table\s+READ/$table WRITE/ );
}
}
my $hc_started = time; # count from time lock is granted
@@ -411,6 +424,11 @@ else {
$dbh->do( "FLUSH LOGS" ) if ( $opt{flushlog} );
$dbh->do( "RESET MASTER" ) if ( $opt{resetmaster} );
$dbh->do( "RESET SLAVE" ) if ( $opt{resetslave} );
if ( $opt{record_log_pos} ) {
record_log_pos( $dbh, $opt{record_log_pos} );
$dbh->do("FLUSH TABLES /*!32323 $hc_tables */");
}
}
my @failed = ();
@@ -473,6 +491,12 @@ if ( @failed ) {
# delete any @targets
# rename _old copy back to original
my @targets = ();
foreach my $rdb ( @db_desc ) {
push @targets, $rdb->{target} if ( -d $rdb->{target} );
}
print "Deleting @targets \n" if $opt{debug};
print "Deleting @targets \n" if $opt{debug};
rmtree([@targets]);
if (@existing) {
@@ -603,7 +627,6 @@ sub safe_system
}
}
sub retire_directory {
my ( @dir ) = @_;
@@ -625,6 +648,40 @@ sub retire_directory {
}
}
sub record_log_pos {
my ( $dbh, $table_name ) = @_;
eval {
my ($file,$position) = get_row( $dbh, "show master status" );
die "master status is undefined" if !defined $file || !defined $position;
my ($master_host, undef, undef, undef, $log_file, $log_pos )
= get_row( $dbh, "show slave status" );
my $hostname = hostname();
$dbh->do( qq{ replace into $table_name
set host=?, log_file=?, log_pos=?,
master_host=?, master_log_file=?, master_log_pos=? },
undef,
$hostname, $file, $position,
$master_host, $log_file, $log_pos );
};
if ( $@ ) {
warn "Failed to store master position: $@\n";
}
}
sub get_row {
my ( $dbh, $sql ) = @_;
my $sth = $dbh->prepare($sql);
$sth->execute;
return $sth->fetchrow_array();
}
__END__
=head1 DESCRIPTION
@@ -659,6 +716,38 @@ The checkpoint-table must contain at least the following fields:
=back
=item --record_log_pos log-pos-table
Just before the database files are copied, update the record in the
log-pos-table from the values returned from "show master status" and
"show slave status". The master status values are stored in the
log_file and log_pos columns, and establish the position in the binary
logs that any slaves of this host should adopt if initialised from
this dump. The slave status values are stored in master_host,
master_log_file, and master_log_pos, and these are useful if the host
performing the dump is a slave and other sibling slaves are to be
initialised from this dump.
The name of the log-pos table should be supplied in database.table format.
A sample log-pos table definition:
=over 4
CREATE TABLE log_pos (
host varchar(60) NOT null,
time_stamp timestamp(14) NOT NULL,
log_file varchar(32) default NULL,
log_pos int(11) default NULL,
master_host varchar(60) NULL,
master_log_file varchar(32) NULL,
master_log_pos int NULL,
PRIMARY KEY (host)
);
=back
=item --suffix suffix
Each database is copied back into the originating datadir under
@@ -784,7 +873,7 @@ Study the code inside this script and only rely on it if I<you> believe
that it does the right thing for you.
Patches adding bug fixes, documentation and new features are welcome.
Please send these to internals@mysql.com.
Please send these to internals@lists.mysql.com.
=head1 TO DO
@@ -814,6 +903,8 @@ Add support for forthcoming MySQL ``RAID'' table subdirectory layouts.
Tim Bunce
Martin Waite - added checkpoint, flushlog, regexp and dryrun options
Fixed cleanup of targets when hotcopy fails.
Added --record_log_pos.
Ralph Corderoy - added synonyms for commands