diff options
Diffstat (limited to 'perl-install/partition_table/dos.pm')
| -rw-r--r-- | perl-install/partition_table/dos.pm | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/perl-install/partition_table/dos.pm b/perl-install/partition_table/dos.pm index 4e8dbf1f2..135d02208 100644 --- a/perl-install/partition_table/dos.pm +++ b/perl-install/partition_table/dos.pm @@ -281,10 +281,14 @@ sub end_write { 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); + # Whenever udevd receives a change event for a raw disk device it is watching, it asks the kernel to + # rescan the partition table on that device by calling the BLKRRPART ioctl. This is only successful + # if none of the partitions on that device are currently mounted. So if any partitions are mounted, + # we need to tell the kernel what has changed ourselves. + # The udev/rules.d/60-block.rules file causes the raw disk devices to be watched by udev. This file is + # not present in the cut-down system used to run the classic installer, so we always need to tell the + # kernel in that case. + return ! -e '/usr/lib/udev/rules.d/60-block.rules' || any { $_->{isMounted} } partition_table::get_normal_parts($hd); } sub empty_raw { { raw => [ ({}) x $nb_primary ] } } |