Re: generic HW question about SATA

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On Thursday 22 February 2007 20:58, Mikkel L. Ellertson wrote:
> James Wilkinson wrote:
> > Mikkel L. Ellertson wrote:
> >> Kudzu should find the disk when you add it.
> >
> > I'm not sure that it is kudzu these days -- as I understand it, the
> > hotplug system should detect it on boot, and udev should add a /dev/sda
> > device node.
>
> Udev rather then hotplug. Hotplug is on the way out. It isn't even
> used when you plug in USB devices any more. It is supposed to be
> able to use hotplug scripts, but I think that is broken. At least it
> does not work for my GPS or REB1100. (I files a bug report on the
> GPS, but not the REB1100, as I broke the REB1100, and can't really
> test that any more.) But Kudzu should at least update
> /etc/sysconfig/hwconf.
>
> >> I am not sure
> >> what happens when you reboot after partitioning the disks - it would
> >> be interesting to see if the partitions would get auto-mounted off
> >> of /media if you do not have entries for them in fstab.
> >
> > I would think that highly unlikely, because the disks would not have
> > filesystems on them. Anne would have to mke2fs new filesystems before
> > they could be mounted.
>
> I am not sure how the system would handle it - the partition type
> might cause the system to look for a specific type of file system,
> and a label. The logs would be interesting in any case. I guess I'll
> have to look at the HAL rules...
>
> > What I'm not sure about is whether suitable device nodes will be created
> > when Anne either creates new partitions or a new logical volume (e.g.
> > /dev/sda1, if she creates one large traditional partition). I don't know
> > if there's any way to get the system to rescan the disk short of
> > rebooting.
>
> They would be created on a reboot. I think they would also be
> created if you use "hdparm -z <drive>" to re-read the partition
> table. Then again, fdisk tries to do an update when you write the
> partition table to disk...
>
> > In any case, my experience is that FC6 won't auto-mount partitions on
> > non-removable media.
>
> I have not played with it, that is why I was wondering what the
> system would do...
>
I thought that udev and hal only dealt with removeable drives?

Anne

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