Messages in this thread | | | Date | Wed, 07 Jan 2004 21:31:13 +0200 | From | Mika Penttilä <> | Subject | Re: removable media revalidation - udev vs. devfs or static /dev |
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Greg KH wrote:
>On Wed, Jan 07, 2004 at 09:23:39PM +0200, Mika Penttilä wrote: > > >>Greg KH wrote: >> >> >>>On Wed, Jan 07, 2004 at 10:38:31AM -0800, Linus Torvalds wrote: >>> >>> >>>>And it really has to create _all_ of them, exactly because there's no way >>>>to know ahead-of-time which of them will be available. >>>> >>>>Then, user space can just access "/dev/sda1" or whatever, and the act of >>>>accessing it will force the re-scan. >>>> >>>> >>>> >>>> >>>Hm, that would work, but what about a user program that just polls on >>>the device, as the rest of this thread discusses? As removable devices >>>are not the "norm" it would seem a bit of overkill to create 16 >>>partitions for every block device, if they need them or not. >>> >>> >>> >>Accessing the partition would not cause the rescan (accessing the whole >>disk causes.) I think devfs does/did this rescan on access. >> >> > >It would rescan on access of a partition or the main block device? > >If accessing the partition doesn't work, than having udev create all >partitions wouldn't help anything :( > >thanks, > >greg k-h > >
Right, rescan on access of main block device works, partition not, afaics.
--Mika
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