On Mi, 17.04.24 17:59, Christoph Hellwig (hch@xxxxxx) wrote: > On Wed, Apr 17, 2024 at 05:48:16PM +0200, Lennart Poettering wrote: > > Block devices with part scanning off are quite common after all, > > i.e. "losetup" creates them by default like that, and partition block > > devices themselves have no part scanning on and so on, hence we have > > to be ablet to operate sanely with them. > > Maybe and ioctl to turn on partition scanning if it is currently disabled > or return an error otherwise would be the better thing? It would > do the right thing for the most common loop case, and with a bit more > work could do the right thing for those that more or less disable it > graciously (ubiblock, drbd, zram) and would just fail for those who are > so grotty old code and slow devices that we never want to do a partition > scan (basically old floppy drivers and the Nintendo N64 cartridge driver) Well, there are plenty of other block devices with part scanning off, such as DM, including dm-crypt, dm-integrity and so on. And that's certainly stuff we want to cover for this. Lennart -- Lennart Poettering, Berlin
