В Tue, 12 May 2015 18:52:22 +0800 Michael Chang <mch...@suse.com> пишет:
> On Fri, May 08, 2015 at 09:53:41PM +0300, Andrei Borzenkov wrote: > > There are two main applications. > > > > 1. Omit install device to create generic image intended for chainloading > > from other master loader. Such image can be put on any device (or file > > system) and will still be able to find its $root. Currently even with > > --no-bootsector grub-install optimizes image by skipping UUID search if > > possible. > > Actually I think it is useful for all platforms. > > 2. Redundant installation on multi-device filesystem, RAID or similar. > > This allows both optimizing image w.r.t. to using --prefix vs. load.cfg > > as well as creating image just once. > > I can only tell it to solve the problem of time wasting in copying > modules and images creation due to multiple invocation of grub-install > for doing redundency install. Beside that, do you foresee any other > improvement it can provide? > You answered it yourself below. That is why I think it is useful mostly for PC BIOS that is unique with embedding problem. > > > > Patch allows transparently use none or multiple installation devices, > > similar to > > > > grub_devices="/dev/sda /dev/sda1 /dev/sdb" > > It also looks to me that this patch can solve the problem of multiple > device install with blocklists. Think about the user installs to mbr > (sda) and partition (sda1) because he someshow wants the paritition to > be chainload-able for resuce or for any of his own interests. > > If the user occasionally do. > > grub-install /dev/sda1 grub-install /dev/sda > > The chainload will fail for sda1 since later install to mbr replaces the > core.img. > Exactly. This was common problem for openSUSE users as at least in earlier versions installer defaulted to multiple bootloader locations and only some of them allowed embedding. > You patch can avoid such pit-fall by doing it once. > > > grub-install $grub_devices > > What if one of the device failed, should it continue installing the rest > or abort immediately ? > It will abort, unfortunately. Changing it is really intrusive as it may happen deep in call chain which simply does grub_util_error(). It is something that may be considered for the future. BTW as far as I can tell pbl aborts installation if any of grub-install invocation failed. _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
