On Sun, Aug 13, 2023 at 10:23:49AM +0200, Loic Poulain wrote: > Add an optional timeout arg to 'rootwait' as the maximum time in > seconds to wait for the root device to show up before attempting > forced mount of the root filesystem. > > Use case: > In case of device mapper usage for the rootfs (e.g. root=/dev/dm-0), > if the mapper is not able to create the virtual block for any reason > (wrong arguments, bad dm-verity signature, etc), the `rootwait` param > causes the kernel to wait forever. It may however be desirable to only > wait for a given time and then panic (force mount) to cause device reset. > This gives the bootloader a chance to detect the problem and to take some > measures, such as marking the booted partition as bad (for A/B case) or > entering a recovery mode. > > In success case, mounting happens as soon as the root device is ready, > unlike the existing 'rootdelay' parameter which performs an unconditional > pause. > > Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxx> > --- Looks mostly fine to me now but that's v6.7 fodder as it's rather late in the cycle. I'll earmark this but feel free to resend post merge window closure.
