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authorMartin Whitaker <mageia@martin-whitaker.me.uk>2017-01-21 20:00:20 +0000
committerMartin Whitaker <mageia@martin-whitaker.me.uk>2017-02-25 11:31:03 +0000
commit6f0880e11d1f83ca239c823cece00fc7d034dddb (patch)
treeddde24b02d9f165331692166aab337a5a1b30c99 /perl-install/partition_table
parenta5473711818b2519552561b33c3f181ab1bbfde6 (diff)
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Don't tell the kernel about partition table changes when it rescans them automatically (mga#20074).
When no partitions on a DOS-partitioned disk are mounted, the kernel automatically rescans the partition table when it is written to disk. We shouldn't then try to update the kernel's view of the partition table, as the list of deltas we have recorded is relative to the previous state of the partition table, not the newly rescanned state. The behaviour for other partition table types is unchanged. v2 (tvignaud): just make base class assume the kernel doesn't reread, only mbr subclass overrides need_to_tell_kernel() in order to be smarter
Diffstat (limited to 'perl-install/partition_table')
-rw-r--r--perl-install/partition_table/dos.pm8
-rw-r--r--perl-install/partition_table/raw.pm6
2 files changed, 14 insertions, 0 deletions
diff --git a/perl-install/partition_table/dos.pm b/perl-install/partition_table/dos.pm
index c56cdab31..69566aaa8 100644
--- a/perl-install/partition_table/dos.pm
+++ b/perl-install/partition_table/dos.pm
@@ -278,6 +278,14 @@ sub end_write {
close $F;
}
+sub need_to_tell_kernel {
+ my ($hd) = @_;
+ # If none of the partitions are mounted, the kernel will automatically rescan
+ # the partition table. If any partitions are mounted, this doesn't happen, so
+ # we need to tell the kernel what has changed.
+ return any { $_->{isMounted} } partition_table::get_normal_parts($hd);
+}
+
sub empty_raw { { raw => [ ({}) x $nb_primary ] } }
sub initialize {
diff --git a/perl-install/partition_table/raw.pm b/perl-install/partition_table/raw.pm
index e9b293b90..ebb20b179 100644
--- a/perl-install/partition_table/raw.pm
+++ b/perl-install/partition_table/raw.pm
@@ -238,6 +238,12 @@ sub zero_MBR_and_dirty {
fsedit::partition_table_clear_and_initialize([], $hd);
}
+#- by default, we assume the kernel doesn't automatically reread partition table:
+sub need_to_tell_kernel {
+ my ($_hd) = @_;
+ 1;
+}
+
sub read_primary {
my ($hd) = @_;