Re: [PATCH 1/2] SCSI: Add a SCSI option for persistent device names in Kernel.
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On Fri, Apr 08, 2011 at 08:14:12AM -0700, James Bottomley wrote: > So, while I agree totally with the above: udev and userspace is the way > to go, I'm not totally opposed to having a non-invasive mechanism for > indicating a user's preferred name for a device. I think there are a > couple of ways to do this: > > 1. Entirely in userspace: just have udev consult a preferred name > file and create say /dev/disk/by-preferred. Then have all the > tools that normally output device information do the same (i.e. > since real name to preferred name is 1:1, they could all do a > reverse lookup). > 2. have a writeable sysfs preferred_name field, either in the > generic device or just in SCSI. The preferred name would be > used by outbound only (i.e. kernel dev_printk messages and > possibly /proc/partitions). All inbound uses of the device > would come via the standard udev mechanisms > (i.e. /dev/disk/by-preferred would be the usual symlink). This > means from the kernel point of view, no renaming has happened. > We'd just try to print out the preferred name in certain > circumstances, which should solve most of the described problem. Either, or both, of those options are fine with me as well. thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html