X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=chiark-utils.git;a=blobdiff_plain;f=backup%2Ffull;h=a46726077e414ff1275606931562672a82b4024c;hp=ddd15ce215a2ff69e4c1ac4204b8c7efbec0bd3b;hb=f8ddd2789c8752cd919a9f9d5f1e05d615ceff1a;hpb=6548c05b2f401d9d712acde8d0aff31388c0db70

diff --git a/backup/full b/backup/full
index ddd15ce..a467260 100755
--- a/backup/full
+++ b/backup/full
@@ -45,6 +45,8 @@ while (@ARGV) {
 # checkallused checks that all the filesystems mounted are in fact
 # dumped in both full and incremental dumps.
 
+openlog();
+
 if (!$nocheck) {
     setstatus "FAILED configuration check";
     print "Configuration check ...\n" or die $!;
@@ -140,14 +142,13 @@ if ($incremental) {
 
 # Read the filesystem group definition (file fsys.nnn)
 readfsys("$fsys");
-openlog();
 
 $doing= "dump of $fsys to tape $tapedesc in drive $tape";
 print LOG "$doing:\n" or die $!;
 
 if (!$noreten) {
     setstatus "FAILED retensioning";
-    system "mt -f $tape reten"; $? and die $?;
+    runsystem("mt -f $tape reten");
 }
 
 setstatus "FAILED writing tape ID";
@@ -168,6 +169,7 @@ sub closepipes () {
     close(DUMPOR); close(TEEOR); close(BUFOR); close(FINDOR);
     close(DUMPOW); close(TEEOW); close(BUFOW); close(FINDOW);
     close(GZOR); close(GZOW);
+    close(DDERRR); close(DDERRW);
 }
 
 # work out a find option string that will exclude the required files    
@@ -188,10 +190,12 @@ for $tf (@fsys) {
     pipe(FINDOR,FINDOW) or die $!;
     pipe(DUMPOR,DUMPOW) or die $!;
     pipe(TEEOR,TEEOW) or die $!;
+    pipe(TEEOR,TEEOW) or die $!;
     pipe(BUFOR,BUFOW) or die $!;
+    pipe(DDERRR,DDERRW) or die $!;
     
     $bufir='TEEOR';
-    $ddcmd= "dd ibs=$softblocksizebytes obs=$blocksizebytes of=$ntape";
+    $ddcmd= "dd ibs=$softblocksizebytes obs=$blocksizebytes of=$ntape 2>&1";
 
     if ($gz) {
 	$bufir='GZOR';
@@ -199,6 +203,8 @@ for $tf (@fsys) {
 	$ddcmd .= " conv=sync";
     }
     
+    nexttapefile("full $prefix:$atf");
+
     # We can back up via dump or cpio or zafio
     $dumpin= '</dev/null';
     if ($tm eq 'dump') {
@@ -214,8 +220,7 @@ for $tf (@fsys) {
         $dumpcmd = "afio -b $softblocksizebytes -Zo -";
         $dumpin = '<&FINDOR';
     } elsif ($tm eq 'ntfsimage') {
-# fixme have to find device rather than mountpoint (atf is mountpoint)
-	$dumpcmd= "ntfsimage -vvf --dirty $atf";
+	$dumpcmd= "ntfsimage -svvf --dirty $dev";
     } else {
 	die "unknown method $tm for $prefix:$atf\n";
     }
@@ -224,6 +229,7 @@ for $tf (@fsys) {
     # It is roughly equivalent to:
     #    md5sum <p >>this-md5sums
     #    dump <$dumpin | tee p [| gzip] | writebuffer | dd >/dev/null
+
     startprocess '<p','>>this-md5sums',"$nice md5sum";
     startprocess $dumpin,'>&DUMPOW',"$nice ".$rstr.$dumpcmd;
     startprocess '<&DUMPOR','>&TEEOW',"$nice tee p";
@@ -231,9 +237,18 @@ for $tf (@fsys) {
 	startprocess '<&TEEOR','>&GZOW',"$nice gzip -v$gz";
     }
     startprocess "<&$bufir",'>&BUFOW',"$nasty writebuffer";
-    startprocess '<&BUFOR','>/dev/null',"$nasty $ddcmd";
+    startprocess '<&DDERRR','>/dev/null',"$nice tee dderr >&2";
+    startprocess '<&BUFOR','>&DDERRW',"$nasty $ddcmd";
     closepipes();
     endprocesses();
+
+    open DDERR, "dderr" or die $!;
+    defined(read DDERR,$_,1023) or die $!;
+    close DDERR;
+    m/\n(\d+)\+0 records out\n/ or die ">$dderr< ?";
+    push @tapefilesizes, [ $1, $currenttapefilename ];
+    $totalrecords += $1;
+    pboth("total blocks written so far: $totalrecords\n");
 }
 
 # The backup should now be complete; verify it
@@ -241,8 +256,8 @@ for $tf (@fsys) {
 setstatus "FAILED during check";
 
 # Rewind the tape and skip the TAPEID record
-system "mt -f $tape rewind"; $? and die $?;
-system "mt -f $ntape fsf 1"; $? and die $?;
+runsystem("mt -f $tape rewind");
+runsystem("mt -f $ntape fsf 1");
 
 # Check the md5sums match for each filesystem on the tape
 open S,"this-md5sums" or die $!;
@@ -255,8 +270,7 @@ for $tf (@fsys) {
     $cmd .= " | $nasty readbuffer";
     $cmd .= " | $nice gzip -vd" if $gz;
     $cmd .= " | $nice md5sum";
-    print LOG "  $cmd\n" or die $!;
-    print "  $cmd\n" or die $!;
+    pboth("  $cmd\n");
     chomp($csum= `$cmd`);
     $csum =~ s/\ +\-?$//;
     $orgsum eq $csum or die "MISMATCH $tf $csum $orgsum\n";
@@ -264,10 +278,26 @@ for $tf (@fsys) {
     print LOG "checksum ok $csum\t$tf\n" or die $!;
 }
 printdate();
-system "mt -f $tape rewind"; $? and die $?;
+runsystem("mt -f $tape rewind");
 
 setstatus "FAILED during cleanup";
 
+$summary= '';
+foreach $tfs (@tapefilesizes) {
+    $summary .= sprintf "    %10d blocks for %s\n", $tfs->[0], $tfs->[1]
+}
+$summary .=
+    sprintf "    %10d blocks total (of %d bytes) plus TAPEID and headers\n",
+    $totalrecords, $blocksizebytes;
+
+pboth("size-summary:\n");
+pboth($summary);
+
+open SS, ">size-summary..new" or die $!;
+print SS $summary or die $!;
+close SS or die $!;
+rename 'size-summary..new',"size-summary.$fsys" or die $!;
+
 # Write to some status files to indicate what the backup system
 # ought to do when next invoked.
 # reset incremental backup count to 1.