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Re: [Xen-users] XEN 4.1.2 + gentoo-sources-3.3.0: cannot open root device sddX
- To: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
- From: Flavio <fbcyborg@xxxxxxxxx>
- Date: Thu, 29 Mar 2012 10:47:46 +0200
- Cc: xen-users <xen-users@xxxxxxxxxxxxx>
- Delivery-date: Thu, 29 Mar 2012 08:49:41 +0000
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On 29 March 2012 10:44, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
> It has been a property of Linux for quite a while now (IIRC since the
> early 2.6.x days) that disks are not named in any stable or
> deterministic order. So it is entirely possible that your disk will get
> a different name each time you reboot, even without changing your
> hardware (this is particularly true of USB attached disks but I also see
> it with the SATA controllers in one of my systems).
> This is not a problem which is specific to Xen, although Xen may impact
> the timings of device probing etc and so change the random ordering to a
> different random ordering.
> If this effects you then the only way around it is to boot based on UUID
> or LABEL, which requires an initramfs with udev etc. Most distros
> provide tools for creating these.
Thanks Ian, I did understand now.
Fortunately it seems that the disk is recognized as sdc most of the times now.
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