Messages in this thread | | | Date | Wed, 7 Jan 2004 18:03:35 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: removable media revalidation - udev vs. devfs or static /dev |
| |
On Wed, 7 Jan 2004, Olaf Hering wrote: > > > > Then, user space can just access "/dev/sda1" or whatever, and the act of > > accessing it will force the re-scan. > > How would that work? I mean, what will a tool that cares about a block > event do? It will run a fdisk/parted -l /udev/sda to figure out what partitions > are there (just to skip an extended partition sda5, as example) and > finds no media. That tool will never run again on sda, unless a new > block add event comes in. So some sort of polling is required for that > class of devices.
What is your problem?
I'll use a very common and simple case that I do myself: use any USB media reader to read a camera card. It will be a FAT filesystem on the first partition, so your fstab might look like this:
/dev/sda1 /mnt/smartmedia vfat noauto,user,ro 0 0
and then you just do "mount /mnt/smartmedia", and you're done.
This works. I do it all the time. You just stick in your card, and mount it, and off it foes. No "fdisk" or "parted" _anywhere_.
Linus - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |