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authorFrancois Pons <fpons@mandriva.com>2000-02-09 16:08:57 +0000
committerFrancois Pons <fpons@mandriva.com>2000-02-09 16:08:57 +0000
commit0d2d453524cd5bdd97f0ecdc83955f7f2c26bc6e (patch)
treec36b487071d91939ef82fee1ece85e31636b141d /perl-install/partition_table_raw.pm
parent97acae38970adddb6f753cfce325532b94e2bd12 (diff)
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Diffstat (limited to 'perl-install/partition_table_raw.pm')
-rw-r--r--perl-install/partition_table_raw.pm42
1 files changed, 26 insertions, 16 deletions
diff --git a/perl-install/partition_table_raw.pm b/perl-install/partition_table_raw.pm
index 2acd60004..a08cffecd 100644
--- a/perl-install/partition_table_raw.pm
+++ b/perl-install/partition_table_raw.pm
@@ -36,32 +36,44 @@ sub cylinder_size($) {
$hd->{geom}{sectors} * $hd->{geom}{heads};
}
+#- defaults methods for adjusting start and end for partitions, these
+#- methods will shrink the partition inside current limits, but think
+#- of this: hidden extended partitions that contains logical ones are
+#- not specified, so end is always almost above a cylinders boundaries
+#- by the start of a logical partitions (sectors, ie 63 generally) inside
+#- its hidden extended containers. so for adjustEnd, it is very important
+#- to round_down to cylinder boundarie else partitions will overlap.
+#- furthermore on the interface, choosing 1Mb more is possible that
+#- will go again beyond the normal cylinders boundaries, which may
+#- cause overlaping partitions again :-(
+#- until all the code in diskdrake is not cleaned up perfectly, rounding
+#- down for the end is necessary.
sub adjustStart($$) {
my ($hd, $part) = @_;
my $end = $part->{start} + $part->{size};
$part->{start} = round_up($part->{start},
- $part->{start} % cylinder_size($hd) < 2 * $hd->{geom}{sectors} ?
- $hd->{geom}{sectors} : cylinder_size($hd));
+ $part->{start} % cylinder_size($hd) < 2 * $hd->{geom}{sectors} ?
+ $hd->{geom}{sectors} : cylinder_size($hd));
$part->{size} = $end - $part->{start};
}
sub adjustEnd($$) {
my ($hd, $part) = @_;
my $end = $part->{start} + $part->{size};
- my $end2 = round_up($end, cylinder_size($hd));
- $end2 = $hd->{geom}{cylinders} * cylinder_size($hd) if $end2 > $hd->{geom}{cylinders} * cylinder_size($hd);
+ my $end2 = round_down($end, cylinder_size($hd));
+ unless ($part->{start} < $end2) {
+ $end2 = round_up($end, cylinder_size($hd));
+ }
$part->{size} = $end2 - $part->{start};
}
-#- previous version of adjustEnd, should check for numbers about partition start/end.
-#sub adjustEnd($$) {
-# my ($hd, $part) = @_;
-# my $end = $part->{start} + $part->{size};
-# my $end2 = round_down($end, cylinder_size($hd));
-# unless ($part->{start} < $end2) {
-# $end2 = round_up($end, cylinder_size($hd));
-# }
-# $part->{size} = $end2 - $part->{start};
-#}
+#- this method could be used for when partitions informations will be accurate.
+#- sub adjustEnd($$) {
+#- my ($hd, $part) = @_;
+#- my $end = $part->{start} + $part->{size} - $hd->{geom}{sectors} - 1; #- magically reduces the end, will be rounded up.
+#- my $end2 = round_up($end, cylinder_size($hd));
+#- $end2 = $hd->{geom}{cylinders} * cylinder_size($hd) if $end2 > $hd->{geom}{cylinders} * cylinder_size($hd);
+#- $part->{size} = $end2 - $part->{start};
+#-}
sub get_geometry($) {
my ($dev) = @_;
@@ -85,8 +97,6 @@ sub kernel_read($) {
local *F; openit($hd, *F) or return 0;
sync(); sleep(1);
$hd->{rebootNeeded} = !ioctl(F, c::BLKRRPART(), 0);
- sync(); sleep(1);
- $hd->{rebootNeeded} = !ioctl(F, c::BLKRRPART(), 0);
sync();
close F;
sync(); sleep(1);