- bootloader-config:

  o --action migrate-to-uuids: be more precautious when modifying /etc/fstab
    (especially do not drop unrecognised entries) (#43548)

2 files changed, 27 insertions, 17 deletions

diff --git a/perl-install/NEWS b/perl-install/NEWS
index 0ed36fe2f..90ed78884 100644
--- a/perl-install/NEWS
+++ b/perl-install/NEWS
@@ -1,3 +1,7 @@
+- bootloader-config:
+  o --action migrate-to-uuids: be more precautious when modifying /etc/fstab
+    (especially do not drop unrecognised entries) (#43548)
+
 Version 11.54.1 - 25 September 2008
 
 - make gray background gradient available to mcc
diff --git a/perl-install/standalone/bootloader-config b/perl-install/standalone/bootloader-config
index 8c3dc7466..4a21bc7ac 100755
--- a/perl-install/standalone/bootloader-config
+++ b/perl-install/standalone/bootloader-config
@@ -239,9 +239,10 @@ sub migrate_to_uuids() {
 	_add_uuid_to_swap($_) if $_->{fs_type} eq 'swap' && !$_->{device_UUID};
     }
 
-    _migrate_to_uuids__fstab();
-
     my $fstab = [ fs::get::fstab($all_hds) ];
+
+    _migrate_to_uuids__fstab($fstab);
+
     my $bootloader_migrated;
     my $may_migrate = sub {
 	my ($label, $dev_ref) = @_;
@@ -269,16 +270,30 @@ sub migrate_to_uuids() {
 }
 
 sub _migrate_to_uuids__fstab() {
+    my ($fstab) = @_;
+
+    my @raw_fstab = fs::read_fstab('', '/etc/fstab', 'keep_freq_passno', 'verbatim_credentials');
+
     my $fstab_migrated;
-    foreach my $part (fs::get::really_all_fstab($all_hds)) {	
-	if (_set_prefer_device_UUID($part)) {
-	    log::l("migrate_to_uuids: migrating fstab $part->{device} entry");
-	    $fstab_migrated = 1;
-	}
+    foreach my $part (@raw_fstab) {
+	devices::should_prefer_UUID($part->{device}) or next;
+
+	my $part_ = find { fs::get::is_same_hd($part, $_) } @$fstab
+	  or log::l("migrate_to_uuids: do not know $part->{device}, can not migrate it"), next;
+
+	$part->{device_UUID} = $part_->{device_UUID}
+	  or log::l("migrate_to_uuids: no UUID for $part->{device}, can not migrate it"), next;
+	$part->{prefer_device_UUID} = 1;
+	$part->{prefer_device} = 0;
+
+	log::l("migrate_to_uuids: migrating fstab $part->{device} entry");
+	$fstab_migrated = 1;
     }
     if ($fstab_migrated) {
 	cp_af('/etc/fstab', '/etc/fstab.before-migrate-to-uuids');
-	fs::write_fstab($all_hds);
+
+	my ($s) = fs::prepare_write_fstab(\@raw_fstab, '', 'keep_smb_credentials');
+	output('/etc/fstab', $s);
     }
 }
 
@@ -290,15 +305,6 @@ sub _migrate_dev_to_uuid {
     $part && $part->{device_UUID} && "UUID=$part->{device_UUID}";
 }
 
-sub _set_prefer_device_UUID {
-    my ($part) = @_;
-    $part->{device_UUID} && !$part->{prefer_device_UUID} && !$part->{prefer_device_LABEL}
-      && devices::should_prefer_UUID($part->{device}) or return;
-    $part->{prefer_device_UUID} = 1;
-    $part->{prefer_device} = 0;
-    1;
-}
-
 # add UUID to swap v.2 in case the swap was created long ago when mkswap didn't do it by default
 sub _add_uuid_to_swap {
     my ($part) = @_;