Re: Rebuild initrd to get dev-mapper working

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On Mon, 2006-12-11 at 13:45 +0800, Hadders wrote:
> Craig White wrote:
> > On Mon, 2006-12-11 at 13:17 +0800, Hadders wrote:
> >   
> >> Hi all,
> >>   I'm very close to getting my new hardware setup working. It kinda does.
> >>
> >> I'm using the Intel SATA RAID to get RAID 0,  Grub as a boot manager, 
> >> have installed XP and copied my existing FC5 setup "over" to the new 
> >> container.
> >>
> >> I can boot into this new setup, but only with the stock Kernel. When I 
> >> try the latest Kernel, the device mapper doesn't work and as such, the 
> >> system can't find the filesystems.
> >> Over on the ata.raid list, someone has suggested that I run the following:
> >>
> >>  > dmraid -a n && dmraid -a y
> >> Which deactivates/activates the RAID container in one go?
> >> Then rebuild the initrd for the latest kernel I have (but not running)
> >>
> >> I would assume the safest place to run this command would be from 
> >> runlevel 1?
> >>
> >> Any tips would be appreciated.
> >>     
> > ----
> > can't think of any reason that runlevel would matter since initrd is
> > loaded only upon boot.
> >
> > The way I would probably handle it on my system...
> >
> > mkinitrd initrd-2.6.18-1.2239.fc5.img.custom 2.6.18-1.2239.fc5
> > cp initrd-2.6.18-1.2239.fc5.img initrd-2.6.18-1.2239.fc5.img.saved
> > mv initrd-2.6.18-1.2239.fc5.img.custom initrd-2.6.18-1.2239.fc5.img
> >
> > Though I have learned to check the contents of /etc/modprobe.conf to
> > make certain that things are the way that I want before I execute
> > mkinitrd
> >
> > Craig
> >
> >   
> I was thinking about the runlevel because I was going to blink the RAID 
> container out/in of existence briefly, figuring the less things running, 
> the less likely something might complain.
----
no way to know - what mount points are involved.

If /bin is involved forgettaboutit

If /var is involved, I would probably suggest runlevel 1 would probably
be a good idea because it's gonna dump messages to console which gets
messy
----
> 
> When I download the latest kernel and install it through yum/rpm 
> process, does an initrd get built automatically?
----
yes

Craig

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