DragonFly users List (threaded) for 2010-08
Re: Utility to list /dev/nodes & serno's
Here you have the approach. I'll commit today if it's okay.
2010/8/12 Aggelos Economopoulos <email@example.com>:
> On 08/12/2010 10:30 AM, Dylan Reinhold wrote:
>> On 08/06/2010 01:27 PM, Matthew Dillon wrote:
>>> :Hi people,
>>> :is there a way to easily list all disks and their associated serno's ?
>>> :Something like 'blkid' utility of Linux, if you happen to know it.
>>> :I could happily hack something like that, if we lack it.
>>> There isn't, and that would be cool. It is fairly easy to match
>>> up device numbers from devfs.
>>> You can use sysctl kern.disks output to get a list of disk devices,
>>> then you can scan /dev and pick those base names out and stat them,
>>> and you can scan /dev/serno and stat those babies and match up
>>> the st_rdev's with the ones from /dev to getting related serial
>>> If we wanted to get more involved we could add an ioctl() to retrieve
>>> the serial number (if available), but it can definitely be scripted
>>> right now without that.
>>> Matthew Dillon
>> I started a utility a while back going down a different path, I have now
>> changed it to use the sysctl call like Matt pointed out.
> That is a suboptimal approach. It should be trivial to export serno via
> udev as Alex suggested and just as trivial to parse that (and more) info
> from a userspace utility using libdevattr. It is generic and extendable.
> Just try it :)