[rhelv6-list] kickstarting rhel6 from usb key

[Greg Swift]

in the stage2 environment check to see if /dev/disk/by-label is
available.  If it is, and you know or can change the label of your usb
device, you should be able to reference this.

I know that in the multipath bits they are trying to push more heavily
into using the /dev/disk/by-scsi-id/ for disk handling in rhel 6
anaconda.

-greg


On Wed, Jun 15, 2011 at 15:18, Jason Keltz <jas at cse.yorku.ca> wrote:
> Hi Ges,
>
> Thanks for your reply.
> Does this mean that kickstarting from a USB key is just not reliable?
> You have to be able to specify a device during kickstart, and if you don't
> know what the device that represents the hard disk will be, then what do
> you?
> I could "calculate" it on the fly, and modify the kickstart process
> accordingly, but if there are multiple disks in the system, and I want to be
> able to specify which of those devices will be used for kickstart, then this
> messes things up ..
> Once a system is kickstarted, you can use labels, etc. to identify disks,
> but assuming you're starting with a totally blank hard disk, who knows what
> device the kernel will see..
>
> I remember this was an issue years and years ago .. can't believe we haven't
> found a better way to handle this under Linux yet...
>
> sigh..
>
> Jason.
>
>
> Grzegorz Witkowski wrote:
>>
>> Hi,
>>
>> /dev/... devices may not be persistent between reboots.
>> It is not a bug. The kernel usually just assigns unpredictable device
>> names based on the order of discovery. See udev related info.
>>
>> Regards,
>> Ges
>>
>> On Wed, 2011-06-15 at 15:44 -0400, Jason Keltz wrote:
>>>
>>> Hi.
>>>
>>> I'm kickstarting a new Red Hat 6.0 system from a USB key.
>>> I've kickstarted it many times from the key in the last week, and the USB
>>> key is recognized as sdb, and the system hard disk as sda.
>>> However, this morning, I went to kickstart, and the USB key was suddenly
>>> being recognized as sda which, of course messed up the process.
>>> I tried it various times, and it continued to be that way.
>>> I then had to leave it for a while because I was busy with other stuff.
>>> When I came back, the hard disk is now being recognized as sda, usb key
>>> as sdb.
>>> What's up?  seems like an odd bug...
>>>
>>> Jason.
>>>
>>> _______________________________________________
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>>> rhelv6-list at redhat.com
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>>
>>
>>
>>
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