Re: Sata controller order
In article <9R3QW-3ap-69@gated-at.bofh.it>,
Ron Johnson <ron.l.johnson@cox.net> wrote:
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> On 01/29/08 12:09, Stuart Gall wrote:
> > Hello,
> > I have a problem with 4.0r2 (although it is probably not exclusive to
> > that release)
> >
> > On a number of systems with multiple sata controllers the controllers
> > come up in different orders (randomly on boot) the order is always the
> > same in lilo but gets changed sometimes by the time the kernel loads.
> > This has the effect of juggling the drives so mount does not work.
> >
> > I have seen this problem in a number of places on the net, the usual
> > solution posted is to mount by label rather than by drive.
> >
> > This is possible for EXT2/EXT3 but it is not possile AFAIKS for swap.
>
> Swap partitions *can* have labels. You can also mount by UUID.
Yes swap partitions can have labels, yes you can mount ext2/ext3
filesystems bu UUID. But it does not work for swap.
At least that is my interpretation of man fstab. And no matter what I
try in fstab I cant mount swap by label or UUID.
Can you give me an example of what my fstab entry should look like
LABEL=swap swap swap defaults 0 0
Does not work.
>
> > Also the reason these systems have multiple sata controllers is that
> > they have a raid partition. So also I am not sure how the md device
> > would handle having its disks moved around.
> >
> > Is there some way to force a particular controller, and hence disk,
> > ordering on the kernel ?
> >
> > For the moment, if these systems have to be shutdown. On reboot if the
> > order is wrong we get dumped to ramfs then we just ctrl-alt-delete
> > repeatedly until the order comes right and the system boots.
> >
> > I can not understand why the order would be random.
> >
> > I am using irqpoll kernel flag to boot these systems, otherwise we get
> > sda lost interrupt, not sure if that is relevant.
> >
> > TVMIA
>
> - --
> Ron Johnson, Jr.
> Jefferson LA USA
>
> "I'm not a vegetarian because I love animals, I'm a vegetarian
> because I hate vegetables!"
> unknown
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