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HACK: Add amdiskflush application to transform a holding disk into a vtape #281

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HACK: Add amdiskflush application to transform a holding disk into a vtape #281

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3 changes: 2 additions & 1 deletion server-src/Makefile.am
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Original file line number Diff line number Diff line change
Expand Up @@ -51,7 +51,8 @@ sbin_SCRIPTS_PERL = \
amdump \
amflush \
amreindex \
amstatus
amstatus \
amdiskflush
if WANT_RESTORE
amlibexec_SCRIPTS_PERL += \
amidxtaped
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290 changes: 290 additions & 0 deletions server-src/amdiskflush.pl
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Original file line number Diff line number Diff line change
@@ -0,0 +1,290 @@
#!@PERL@ -w

# amdiskflush - transform holding disk into vtape disk
#

package Amanda::DumpFile;

use FileHandle;

sub new {
my $class = shift;
my $self = {};

$self->{"filename"} = $_[0];
bless $self, $class;

return $self;
}

sub getHeader {
my $self = shift;

my ($fh, $header);
open($fh,"<",$self->{"filename"})
or die("Cannot open dumpfile $self->{filename}");
my $nr = read($fh, $header, 32787);
close($fh);

#Make sure we read a block
return undef unless $nr == 32787;

# TODO - handle split dumps (part #) between dir and level
my ($timestamp,$host,$disk,$level,$comp,$prog) = ($header =~ /^AMANDA: FILE (\d+) (\S+) "?([^"]+)"? lev (\d+) comp (\S+) program (\S+)/);

#Make sure we parsed it
return undef unless defined($timestamp);

{ Date => $timestamp, Host => $host, Disk => $disk, Level => $level,
Comp => $comp, Program => $prog };
}

package main;

use strict;
use warnings;

use Amanda::Config qw( :init :getconf);
use Amanda::Disklist;
use Amanda::Logfile qw( :logtype_t log_add log_add_full );
use Amanda::Util qw( :constants match_datestamp quote_string );
use File::Basename;
use Getopt::Long;
use POSIX qw(strftime);
use Time::HiRes qw(gettimeofday);

my $USE_VERSION_SUFFIXES='@USE_VERSION_SUFFIXES@';
my $suf = '';
if ( $USE_VERSION_SUFFIXES =~ /^yes$/i ) {
$suf='-@VERSION@';
}

sub Usage {
print STDERR <<END;
Usage: $0 [--config] <config>

Transform holding disk into vtape disk. This can be used on disk based
vtapes along with "amdump --no-taper" to perform backups directly to
the final disk location.
END
exit 1;
}

my $opt_version;
my $opt_config = undef;

GetOptions('version' => \$opt_version,
'config=s' => \$opt_config)
or Usage();

if (defined $opt_version) {
print "amdiskflush-" . $Amanda::Constants::VERSION , "\n";
exit 0;
}

unless(defined($opt_config)) {
if (@ARGV == 1) {
$opt_config = $ARGV[0];
} else {
Usage();
}
}

Amanda::Util::setup_application("amflush", "server", $CONTEXT_DAEMON, "amanda", "amanda");

my $starttime = gettimeofday();

config_init($CONFIG_INIT_EXPLICIT_NAME, $opt_config);
my ($cfgerr_level, @cfgerr_errors) = config_errors();
if ($cfgerr_level >= $CFGERR_WARNINGS) {
config_print_errors();
if ($cfgerr_level >= $CFGERR_ERRORS) {
die("amdiskflush$suf: errors processing config file");
}
}

Amanda::Util::finish_setup($RUNNING_AS_DUMPUSER);

# Get the holding disk directories
my @hddirs;
for my $hdname (@{getconf($CNF_HOLDINGDISK)}) {
my $cfg = lookup_holdingdisk($hdname);
next unless defined $cfg;

my $dir = holdingdisk_getconf($cfg, $HOLDING_DISKDIR);
next unless defined $dir;
next unless -d $dir;
push(@hddirs, $dir);
}

# Add date shell wildcard match to hddirs
map { $_ .= '/[1-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]' } @hddirs;

# Make sure we have some holding disk files to flush
my $hdfindcmd = 'find ' . join(" ", @hddirs) . ' -name \*.\[0-9\]';
my $hdfiles = `$hdfindcmd 2>/dev/null`;
if ($hdfiles eq "") {
die("amdiskflush$suf: No holding disk files found in " .
join(" ", @hddirs) . "\n");
}

# Get the vtape directory and make sure we are using the file: driver
my $vtapedir = getconf($CNF_TAPEDEV);
if ($vtapedir) {
$vtapedir =~ s/^file:// or
die("amdiskflush$suf: Not using file: driver for tapedev: $vtapedir");
} else {
my $changer = getconf($CNF_TPCHANGER);
my $cfg = lookup_changer_config($changer);
$vtapedir = changer_config_getconf($cfg,$CHANGER_CONFIG_TPCHANGER);
$vtapedir =~ s/^chg-disk:// or
die("amdiskflush$suf: Not using chg-disk: driver for tpchanger: $vtapedir");
}

# Get the log directory
my $logdir = getconf($CNF_LOGDIR);

# Make sure no other server is running
#if (-f "$logdir/log") {
#die("amdiskflush$suf: Another Amanda server is running or amcleanup must be run\n");
#}

# Make sure that the vtape is labeled
defined(my $labelfile = <$vtapedir/data/00000.*>)
or die("amdiskflush$suf: Cannot find vtape label in $vtapedir/data/");

# Date label
my $timestamp = strftime("%Y%m%d%H%M%S", localtime());

# Open our log file
$timestamp = Amanda::Logfile::make_logname("amflush", $timestamp);
my $logfile = Amanda::Logfile::get_logname();

my $logfh = Amanda::Logfile::open_logfile($logfile)
or die "cannot open logfile $logfile: $!";

$cfgerr_level = Amanda::Disklist::read_disklist();
if ($cfgerr_level >= $CFGERR_ERRORS) {
die("errors processing disklist");
}
# Output DISK records for each DLE
foreach my $dle (Amanda::Disklist::all_disks()) {
log_add($L_DISK, $dle->{"host"}->{"hostname"} . " " . quote_string($dle->{name}));
}

# Start record
log_add($L_START, "date $timestamp");

# Extract the tape label from the tape start filename
my ($tapelabel) = ($labelfile =~ /0000\.(.*)/);

# Log "taper start"
log_add_full($L_START, "taper", "datestamp $timestamp label $tapelabel tape 0");

# Update the tape list
my $tapelist = getconf($CNF_TAPELIST);
my @tapelist;
my ($tapeentry, $fh);
# Read the tapelist, saving the entry for this tape separately from the rest
open($fh, "<", "$tapelist") or die("amdiskflush$suf: Cannot read tapelist $tapelist");
while (<$fh>) {
if (/ $tapelabel /) {
$tapeentry = $_;
} else {
push(@tapelist,$_);
}
}
close($fh);
# Backup the tapelist
rename("$tapelist","${tapelist}.yesterday");
# Update the date for the tape
$tapeentry =~ s/^\d+/$timestamp/;
# Stick it at the top of the list
unshift(@tapelist,$tapeentry);
# Write the tapelist back out
open($fh, ">", "$tapelist") or die("amdiskflush$suf: Cannot write tapelist $tapelist");
print $fh @tapelist;
close($fh);

# Remove any existing tape files
unlink(<$vtapedir/data/*>);

# Create the tape label
open($fh,">",$labelfile) or die("amdiskflush$suf: Cannot write labelfile $labelfile");
print $fh pack("a32768","AMANDA: TAPESTART DATE $timestamp TAPE $tapelabel\n014\n");
close($fh);

my $infodir = getconf($CNF_INFOFILE);

# Process the holding disk files
my $filecount = 1;
my $filecountstr = sprintf("%05d",$filecount);
my $totalkb = 0;
foreach my $hdfile (split('\n',$hdfiles)) {
my $filestarttime = gettimeofday();
my $filename = basename($hdfile);
my ($dumpdate) = ($hdfile =~ m,/(\d{14}),);

# Get the number of blocks
my $bytes = (stat($hdfile))[7];
my $kb = $bytes/1024;

# Get the header from the holding file
my $amdumpfile = Amanda::DumpFile->new($hdfile);
my $header = $amdumpfile->getHeader();

if (defined($header)) {
# Move the holding disk file to the vtape dir
rename($hdfile,"$vtapedir/data/${filecountstr}.${filename}");

# Update info file
my $infodiskname = $header->{"Disk"};
$infodiskname =~ s,/,_,g;
my $infofh;
open($infofh, "<", "$infodir/$header->{Host}/$infodiskname/info")
or die("amdiskflush$suf: Cannot open $infodir/$header->{Host}/$infodiskname/info");
my @info = <$infofh>;
close($infofh);

map { s/^(stats: $header->{Level} \d+ \d+ \d+ \d+)(.*)/$1 $filecount $tapelabel/ } @info;

open($infofh, ">", "$infodir/$header->{Host}/$infodiskname/info")
or die("amdiskflush$suf: Cannot write $infodir/$header->{Host}/$infodiskname/info");
print $infofh @info;
close($infofh);

# Log output
my $fileflushtime = gettimeofday() - $filestarttime;
log_add_full($L_PART, "taper", sprintf("%s %d %s %s %d 1/-1 %d [sec %.6f bytes %d kps %.6f orig-kb %d]",$tapelabel,$filecount,$header->{"Host"},quote_string($header->{"Disk"}),$dumpdate,$header->{"Level"},$fileflushtime,$bytes,$kb/$fileflushtime,$kb));
log_add_full($L_DONE, "taper", sprintf("%s %s %d %d %d [sec %.6f bytes %d kps %.6f orig-kb %d]",$header->{"Host"},quote_string($header->{"Disk"}),$dumpdate,1,$header->{"Level"},$fileflushtime,$bytes,$kb/$fileflushtime,$kb));

# Increment out filecounter
$filecountstr = sprintf("%05d",++$filecount);
$totalkb += $kb;
} else {
print STDERR "Could not read header for $hdfile, skipping...\n";
}
}

# Delete the holding disk date dirs
rmdir(<@hddirs>);

# Taper totals for amreport
log_add_full($L_INFO, "taper", "tape $tapelabel kb $totalkb fm " . ($filecount-1) . " [OK]");

# So amreport thinks the run finished properly
log_add_full($L_FINISH, "driver", sprintf("date %d time %.3f",$timestamp,gettimeofday() - $starttime));

# Record our PID as done
log_add($L_INFO, "pid-done $$");

# Close the log
Amanda::Logfile::close_logfile($logfh);

# Send logs
system("@sbindir@/amreport$suf --from-amdump -l $logfile $opt_config");

# Roll the log file
system("@amlibexecdir@/amlogroll$suf $opt_config");

Amanda::Util::finish_application();